[Title 33 CFR 183]
[Code of Federal Regulations (annual edition) - July 1, 2005 Edition]
[Title 33 - NAVIGATION AND NAVIGABLE WATERS]
[Chapter I - COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)]
[Subchapter S - BOATING SAFETY]
[Part 183 - BOATS AND ASSOCIATED EQUIPMENT]
[From the U.S. Government Printing Office]
33NAVIGATION AND NAVIGABLE WATERS22005-07-012005-07-01falseBOATS AND ASSOCIATED EQUIPMENT183PART 183NAVIGATION AND NAVIGABLE WATERSCOAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)BOATING SAFETY
PART 183_BOATS AND ASSOCIATED EQUIPMENT--Table of Contents
Subpart A_General
Sec.
183.1 Purpose and applicability.
183.3 Definitions.
183.5 Incorporation by reference.
Subpart B_Display of Capacity Information
183.21 Applicability.
183.23 Capacity marking required.
183.25 Display of markings.
183.27 Construction of markings.
Subpart C_Safe Loading
183.31 Applicability.
183.33 Maximum weight capacity: Inboard and inboard-outdrive boats.
183.35 Maximum weight capacity: Outboard boats.
183.37 Maximum weight capacity: Boats rated for manual propulsion and
boats rated for outboard motors of 2 horsepower or less.
183.39 Persons capacity: Inboard and inboard-outdrive boats.
183.41 Persons capacity: Outboard boats.
183.43 Persons capacity: Boats rated for manual propulsion and boats
rated for outboard motors of 2 horsepower or less.
Subpart D_Safe Powering
183.51 Applicability.
183.53 Horsepower capacity.
Subpart E [Reserved]
Subpart F_Flotation Requirements for Inboard Boats, Inboard/Outdrive
Boats, and Airboats
183.101 Applicability.
183.105 Quantity of flotation required.
183.110 Definitions.
183.112 Flotation material and air chambers.
183.114 Test of flotation materials.
Subpart G_Flotation Requirements for Outboard Boats Rated for Engines of
More Than 2 Horsepower
General
183.201 Applicability.
183.202 Flotation and certification requirements.
183.205 Passenger carrying area.
183.210 Reference areas.
183.215 Reference depth.
183.220 Preconditioning for tests.
183.222 Flotation material and air chambers.
Tests
183.225 Flotation test for persons capacity.
183.230 Stability test.
183.235 Level flotation test without weights for persons capacity.
Subpart H_Flotation Requirements for Outboard Boats Rated for Engines of
2 Horsepower or Less
General
183.301 Applicability.
183.302 Flotation requirements.
[[Page 864]]
183.305 Passenger carrying area.
183.310 Reference areas.
183.315 Reference depth.
183.320 Preconditioning for tests.
183.322 Flotation materials.
Tests
183.325 Flotation test for persons capacity.
183.330 Stability test.
183.335 Level flotation test without weights for persons capacity.
Table 4 to Subpart H of Part 183--Weights (Pounds) of Outboard Motor and
Related Equipment for Various Boat Horsepower Ratings
Figures to Subpart H of Part 183
Subpart I_Electrical Systems
General
183.401 Purpose, applicability, and effective dates.
183.402 Definitions.
183.405 General.
Manufacturer Requirements
183.410 Ignition protection.
183.415 Grounding.
183.420 Batteries.
183.425 Conductors: General.
183.430 Conductors in circuits of less than 50 volts.
183.435 Conductors in circuits of 50 volts or more.
183.440 Secondary circuits of ignition systems.
183.445 Conductors: Protection.
183.455 Overcurrent protection: General.
183.460 Overcurrent protection: Special applications.
Subpart J_Fuel Systems
General
183.501 Applicability.
183.505 Definitions.
183.507 General.
Equipment Standards
183.510 Fuel tanks.
183.512 Fuel tanks: Prohibited materials.
183.514 Fuel tanks: Labels.
183.516 Cellular plastic used to encase fuel tanks.
183.518 Fuel tank openings.
183.520 Fuel tank vent systems.
183.524 Fuel pumps.
183.526 Carburetors.
183.528 Fuel stop valves.
183.530 Spud, pipe, and hose fitting configuration.
183.532 Clips, straps, and hose clamps.
183.534 Fuel filters and strainers.
183.536 Seals and gaskets in fuel filters and strainers.
183.538 Metallic fuel line materials.
183.540 Hoses: Standards and markings.
183.542 Fuel systems.
Manufacturer Requirements
183.550 Fuel tanks: Installation.
183.552 Plastic encased fuel tanks: Installation.
183.554 Fittings, joints, and connections.
183.556 Plug and fittings.
183.558 Hoses and connections.
183.560 Hose clamps: Installation.
183.562 Metallic fuel lines.
183.564 Fuel tank fill system.
183.566 Fuel pumps: Placement.
183.568 Anti-siphon protection.
183.570 Fuel filters and strainers: Installation.
183.572 Grounding.
Tests
183.580 Static pressure test for fuel tanks.
183.584 Shock test.
183.586 Pressure impluse test.
183.588 Slosh test.
183.590 Fire test.
Subpart K_Ventilation
183.601 Applicability.
183.605 Definitions.
183.607 Incorporation by reference.
183.610 Powered ventilation system.
183.620 Natural ventilation system.
183.630 Standards for natural ventilation.
Subpart L_Start-in-Gear Protection
183.701 Applicability.
183.705 Definitions.
183.710 Start-in-gear protection required.
183.715 Exception.
Subpart M_Navigation Lights
183.801 Applicability.
183.803 Definitions.
183.810 Navigation light certification requirements.
Subpart N [Reserved]
Authority: 46 U.S.C. 4302; Pub. L 103-206, 107 Stat. 2439; 49 CFR
1.46.
Source: CGD 72-61R, 37 FR 15782, Aug. 4, 1972, unless otherwise
noted.
Subpart A_General
Sec. 183.1 Purpose and applicability.
This part prescribes standards and regulations for boats and
associated equipment to which 46 U.S.C. Chapter
[[Page 865]]
43 applies and to which certification requirements in Part 181 of this
subchapter apply.
[CGD 85-098, 52 FR 19728, May 27, 1987]
Sec. 183.3 Definitions.
Beam means the transverse distance between the outer sides of the
boat excluding handles, and other similar fittings, attachments, and
extensions.
Boat means any vessel--
(1) Manufactured or used primarily for noncommercial use;
(2) Leased, rented, or chartered to another for the latter's
noncommercial use; or
(3) Operated as an uninspected passenger vessel subject to the
requirements of 46 CFR chapter I, subchapter C.
Full transom means a transom with a maximum width which exceeds one-
half the maximum beam of the boat.
Length means the straight line horizontal measurement of the overall
length from the foremost part of the boat to the aftermost part of the
boat, measured from end to end over the deck excluding sheer, and
measured parallel to the centerline. Bow sprits, bumpkins, rudders,
outboard motor brackets, handles, and other similar fittings,
attachments, and extensions are not included in the measurement.
Monohull boat means a boat on which the line of intersection of the
water surface and the boat at any operating draft forms a single closed
curve. For example, a catamaran, trimaran, or a pontoon boat is not a
monohull boat.
Motorwell means any arrangement of bulkheads or structures that
prevents water from entering the passenger carrying area of the boat
through any cutout area in the transom for mounting an outboard motor.
Motorwell height means the vertical distance from the lowest point
of water ingress along the top of the motorwell to a line representing a
longitudinal extension of the centerline of the boat's bottom surface,
excluding keels. This distance is measured as a projection on the
centerline plane of the boat. See Figure 183.3.
Permanent appurtenances means equipment that is mounted or fastened,
so that it is not removable without the use of tools. Seats, inboard
engines, windshields, helm stations, or hardtops are permanent
appurtenances. Outboard motors, controls, batteries, and portable fuel
tanks are not permanent appurtenances.
Remote steering means any mechanical assist device which is rigidly
attached to the boat and used in steering the vessel, including but not
limited to mechanical, hydraulic, or electrical control systems.
Sailboat means a boat designed or intended to use sails as the
primary means of propulsion.
Sheer means the topmost line in a boat's side. The sheer intersects
the vertical centerline plane of the boat at the forward end and
intersects the transom (stern) at the aft end. For the purposes of this
definition, the topmost line in a boat's side is the line defined by a
series of points of contact with the boat structure, by straight lines
at 45 degree angles to the horizontal and contained in a vertical plane
normal to the outside edge of the boat as seen from above and which are
brought into contact with the outside of the horizontal boat. A boat is
horizontal when it is transversely level and when the lowest points at
40 percent and 75 percent of the boat's length behind the most forward
point of the boat are level.
Transom means the surface at the stern of a boat projecting or
facing aft. The upper boundary of the transom is the line defined by a
series of points of contact, with the boat structure, by straight lines
at 45 degree angles to the horizontal and contained in a vertical
longitudinal plane and which are brought into contact with the stern of
the horizontal boat. A boat is horizontal when it is transversely level
and when the lowest points at 40 percent and 75 percent of the boat's
length behind the most forward point of the boat are level.
Transom height means the vertical distance from the lowest point of
water ingress along the top of the transom to a line representing a
longitudinal extension of the centerline of the boat's bottom surface,
excluding keels. This distance is measured as a projection on the
centerline plane of the boat. See Figure 183.3.
[[Page 866]]
Vessel includes every description of watercraft, other than a
seaplane on the water, used or capable of being used as a means of
transportation on the water.
Figure 183.3--Transom and Motorwell Height
[GRAPHIC] [TIFF OMITTED] TC18OC91.018
[CGD 73-250, 40 FR 43856, Sept. 23, 1975, as amended by CGD 75-176, 42
FR 2681, Jan. 13, 1977; CGD 85-002, 51 FR 37574, Oct. 23, 1986; CGD 96-
026, 61 FR 33669, June 28, 1996; 61 FR 36629, July 12, 1996; USCG-1999-
5040, 67 FR 34760, May 15, 2002]
Sec. 183.5 Incorporation by reference.
(a) Certain materials are incorporated by reference into this part
with the approval of the Director of the Federal Register in accordance
with 5 U.S.C. 552(a). To enforce any edition other than the one listed
in paragraph (b) of this section, notice of change must be published in
the Federal Register and the material made available to the public. All
approved material is available for inspection at the Recreational
Boating Product Assurance Division, Washington, DC 20593-0001, and at
the National Archives and Records Administration (NARA). For information
on the availability of this material at NARA, call 202-741-6030, or go
to: http://www.archives.gov/federal--register/code--of--federal--
regulations/ibr--locations.html. All approved material is available from
the sources listed in paragraph (b) of this section.
(b) The materials approved for incorporation by reference in this
part, and the sections affected are:
Air Movement and Control Association, 30
W. University Drive, Arlington Heights,
IL 60004:
AMCA 210-74: Laboratory Methods of Sec. 183.610
Testing Fans for Ratings--1974.
American Boat and Yacht Council, Inc.,
3069 Solomons Island Road, Edgewater,
Maryland 21037-1416:
ABYC A-16 Electric Navigation Lights- Sec. 183.810
1997.
[[Page 867]]
American Society for Testing and
Materials, 100 Barr Harbor Drive, West
Conshohocken, PA 19428-2959:
ASTM D 471-96, Standard Test Method Sec. Sec. 183.114;
for Rubber Property--Effect of 183.516; 183.607; 183.620
Liquids.
ASTM D 1621-94, Standard Test Method Sec. 183.516
for Compressive Properties of Rigid
Cellular Plastics.
ASTM D 1622-93, Standard Test Method Sec. 183.516
for Apparent Density of Rigid
Cellular Plastics.
ASTM D 2842-97, Standard Test Method Sec. 183.114
for Water Absorption of Rigid
Cellular Plastics.
Institute of Electrical and Electronics,
Engineers, Inc., 445 Hoes Lane,
Piscataway, NJ 08854:
IEEE 45 IEEE Recommended Practice for Sec. 183.435
Electrical Installations on
Shipboard--1983. Cable Construction.
National Fire Protection Association, 1
Batterymarch Park, Quincy, MA 02269:
NFPA No. 70 National Electrical Code-- Sec. 183.435
1987. Articles 310 & 400.
Naval Publications Forms Center, Customer
Service--Code 1052, 5801 Tabor Avenue,
Philadelphia, PA 19120:
MILSPEC-P-21929B Plastic Material, Sec. 183.516
Cellular Polyurethane, Foam-In-Place,
Rigid--1970.
Society of Automotive Engineers, Inc., 400
Commonwealth Drive, Warrendale, PA 15096:
SAE J378 Marine Engine Wiring--1984... Sec. 183.430
SAE J557 High Tension Ignition Cable-- Sec. 183.440
1968.
SAE J1127 Battery Cable--1980......... Sec. 183.430
SAE J1128 Low Tension Primary Cable-- Sec. 183.430
1975.
SAE J1527DEC85 Marine Fuel Hoses--1985 Sec. 183.540
Underwriters Laboratories, Inc. (UL), 12
Laboratory Drive, Research Triangle Park,
NC 27709-3995:
UL 1114 Marine (USCG Type A) Flexible Sec. 183.540
Fuel Line Hose--1987.
UL 1128 Marine Blowers--1977.......... Sec. 183.610
UL 1426 Cables for Boats--1987........ Sec. 183.435
[CGD 87-009, 53 FR 36971, Sept. 23, 1988, as amended by CGD 96-026, 61
FR 33670, June 28, 1996; USCG-1999-5151, 64 FR 67176, Dec. 1, 1999;
USCG-2000-7223, 65 FR 40059, June 29, 2000; USCG-1999-6580, 66 FR 55091,
Nov. 1, 2001; 69 18803, Apr. 9, 2004; USCG-2004-18057, 69 FR 34926, June
23, 2004]
Subpart B_Display of Capacity Information
Sec. 183.21 Applicability.
This subpart applies to monohull boats less than 20 feet in length,
except sailboats, canoes, kayaks, and inflatable boats.
Sec. 183.23 Capacity marking required.
Each boat must be marked in the manner prescribed in Sec. Sec.
183.25 and 183.27 with the maximum persons capacity in whole numbers of
persons and in pounds, the maximum weight capacity in pounds, determined
under Sec. Sec. 183.33 through 183.43, and the maximum horsepower
capacity determined under Sec. 183.53 or the statement ``This Boat Not
Rated for Propulsion by a Motor''.
[CGD 78-034, 45 FR 2029, Jan. 10, 1980, as amended by USCG-1999-5832, 64
FR 34716, June 29, 1999]
Sec. 183.25 Display of markings.
(a) Each marking required by Sec. 183.23 must be permanently
displayed in a legible manner where it is clearly visible to the
operator when getting the boat underway.
(b) The information required by Sec. 183.23 must be displayed in
the following manner:
(1) For outboard boats:
U.S. Coast Guard Maximum Capacities
XX Persons or XXX Pounds
XXX Pounds, persons, motor, gear
XXX Horsepower, motor
or
U.S. Coast Guard Maximum Capacities
XX Persons or XXX Pounds
XXX Pounds, persons, motor, gear
XXX Horsepower, motor with remote steering
XXX Horsepower, motor without remote steering
(2) For inboard boats and inboard-outboard boats:
[[Page 868]]
U.S. Coast Guard Maximum Capacities
XX Persons or XXX Pounds
XXX Pounds, persons, gear
(3) For boats rated for motors of 2 horsepower or less:
U.S. Coast Guard Maximum Capacities
XX Persons or XXX Pounds
XXX Pounds, persons, motor, gear
XXX Horsepower, motor
(4) For boats rated for manual propulsion:
U.S. Coast Guard Maximum Capacities
XX Persons or XXX Pounds
XXX Pounds, persons, gear
This Boat Not Rated for Propulsion by Motor
(c) The capacity information displays required in paragraph (b) must
meet the following as illustrated in Figure 183.25:
[GRAPHIC] [TIFF OMITTED] TC18OC91.019
(1) The capacity information required in Sec. 183.23 must be
displayed within a yellow area that--
(i) Is at least 4 inches wide; and
(ii) Is high enough that each line of print is separated by at least
\1/8\ inch from each other and from the borders of the yellow area;
(2) The persons capacity in whole numbers must be black print with
the following dimensions:
(i) The height must not be smaller than one-half inch;
(ii) The width of the numbers must be three-fifths of the height
except for the number ``4'', which shall be one stroke width wider, and
the number ``1'', which shall be one stroke in width;
(iii) The stroke width shall be one-sixth of the height; and
(iv) The minimum space between the numbers shall be one stroke
width.
(3) The words in the line ``XX Persons or XXX Pounds'' must be at
least one-quarter inch in height but not larger than one-half the height
of the persons capacity number and of a color contrasting with yellow.
The number of pounds in this line must be at least one-eighth inch in
height but no larger than one-half the height of the persons capacity
number and of a color contrasting with yellow.
(4) All remaining words and numbers required to be within the yellow
area required in paragraph (c)(1) must be at least one-eighth inch in
height, but no larger than one-half the height of the persons capacity
number.
(5) All other words and numbers on the displays must be located
outside
[[Page 869]]
the yellow area on a background color which contrasts with yellow.
(6) The words ``Maximum Capacities'' must be at least one-quarter
inch in height and of color contrasting with its background.
(7) The words ``U.S. Coast Guard'' must be at least one-eighth inch
in height and of color contrasting with its background.
[CGD 78-034, 45 FR 2029, Jan. 10, 1980]
Sec. 183.27 Construction of markings.
Each marking required by Sec. 183.23 must be--
(a) Capable of withstanding the combined effects of exposure to
water, oil, salt spray, direct sunlight, heat, cold, and wear expected
in normal operation of the boat, without loss of legibility; and
(b) Resistant to efforts to remove or alter the information without
leaving some obvious sign of such efforts.
[CGD 78-034, 45 FR 2030, Jan. 10, 1980]
Subpart C_Safe Loading
Sec. 183.31 Applicability.
This subpart applies to monohull boats less than 20 feet in length
except sailboats, canoes, kayaks, and inflatable boats.
Sec. 183.33 Maximum weight capacity: Inboard and inboard-outdrive boats.
(a) The maximum weight capacity (W) marked on a boat that has one or
more inboard or inboard-outdrive units for propulsion must not exceed
the greater value of W obtained from either of the following formulas:
[GRAPHIC] [TIFF OMITTED] TC18OC91.020
(b) For the purposes of paragraph (a) of this section:
(1) ``Maximum displacement'' is the weight of the volume of water
displaced by the boat at its maximum level immersion in calm water
without water coming aboard. For the purpose of this paragraph, a boat
is level when it is transversely level and when either of the two
following conditions are met:
(i) The forward point where the sheer intersects the vertical
centerline plane and the aft point where the sheer intersects the upper
boundary of the transom (stern) are equidistant above the water surface
or are equidistant below the water surface.
(ii) The most forward point of the boat is level with or above the
lowest point of water ingress.
(2) ``Boat weight'' is the combination of:
(i) Hull weight;
(ii) Deck and superstructure weight;
(iii) Weight of permanent appurtenances; and
(iv) Weight of full permanent fuel tanks.
(3) ``Machinery weight'' is the combined weight of installed engines
or motors, control equipment, drive units, and batteries.
[CGD 72-61R, 37 FR 15782, Aug. 4, 1972]
Editorial Note: For Federal Register citations affecting Sec.
183.33, see the List of CFR Sections Affected, which appears in the
Finding Aids section of the printed volume and on GPO Access.
Sec. 183.35 Maximum weight capacity: Outboard boats.
(a) The maximum weight capacity marked on a boat that is designed or
intended to use one or more outboard motors for propulsion must be a
number that does not exceed one-fifth of the difference between its
maximum displacement and boat weight.
[[Page 870]]
(b) For the purposes of paragraph (a) of this section:
(1) ``Maximum displacement'' is the weight of the volume of water
displaced by the boat at its maximum level immersion in calm water
without water coming aboard except for water coming through one opening
in the motor well with its greatest dimension not over 3 inches for
outboard motor controls or fuel lines. For the purpose of this
paragraph, a boat is level when it is transversely level and when either
of the two following conditions are met:
(i) The forward point where the sheer intersects the vertical
centerline plane and the aft point where the sheer intersects the upper
boundary of the transom (stern) are equidistant above the water surface
or are equidistant below the water surface.
(ii) The most forward point of the boat is level with or above the
lowest point of water ingress.
(2) ``Boat weight'' is the combination of:
(i) Hull weight;
(ii) Deck and superstructure weight;
(iii) Weight of permanent appurtenances; and
(iv) Weight of full permanent fuel tanks.
[CGD 72-61, 37 FR 15782, Aug. 4, 1972, as amended by CGD 73-250, 40 FR
43857, Sept. 23, 1975; CGD 75-176, 42 FR 2681, Jan. 13, 1977; USCG-1999-
5832, 64 FR 34716, June 29, 1999]
Sec. 183.37 Maximum weight capacity: Boats rated for manual propulsion
and boats rated for outboard motors of 2 horsepower or less.
(a) The maximum weight capacity marked on a boat that is rated for
manual propulsion or for motors of 2 horsepower or less must not exceed
3/10 of the difference between the boat's maximum displacement and the
boat's weight in pounds.
(b) For the purposes of paragraph (a) of this section:
(1) ``Maximum displacement'' is the weight of the volume of water
displaced by the boat at its maximum level immersion in calm water
without water coming aboard. For the purpose of this paragraph, a boat
is level when it is transversely level and when either of the two
following conditions are met:
(i) The forward point where the sheer intersects the vertical
centerline plane and the aft point where the sheer intersects the upper
boundary of the transom (stern) are equidistant above the water surface
or are equidistant below the water surface.
(ii) The most forward point of the boat is level with or above the
lowest point of water ingress.
(2) ``Boat weight'' is the combination of:
(i) Hull weight;
(ii) Deck and superstructure weight; and
(iii) Weight of permanent appurtenances.
[CGD 72-61R, 37 FR 15782, Aug. 4, 1972]
Editorial Note: For Federal Register citations affecting Sec.
183.37, see the List of CFR Sections Affected, which appears in the
Finding Aids section of the printed volume and on GPO Access.
Sec. 183.39 Persons capacity: Inboard and inboard-outdrive boats.
(a) The persons capacity in pounds marked on a boat that is designed
to use one or more inboard engines or inboard-outdrive units for
propulsion must not exceed the lesser of:
(1) The maximum weight capacity determined under Sec. 183.33 for
the boat; or
(2) For boats with a maximum persons capacity less than 550 pounds,
the maximum persons capacity determined in the following manner:
(i) Float the boat in calm water with all its permanent
appurtenances, including installed engines, full fuel system and tanks,
control equipment, drive units and batteries.
(ii) Gradually add weights along one outboard extremity of each
passenger carrying area, at the height of the seat nearest the center of
that area, but no higher than the height of the gunwale and distributed
equally forward and aft of that center in a plane parallel to the
floorboards, until the boat assumes the maximum list or trim or both,
without water coming aboard.
(iii) Compute the persons capacity in pounds in the following
formula: Persons capacity=A/0.6 where A is the total of the weights
added in paragraph (a)(2)(ii) of this section.
[[Page 871]]
(b) The maximum persons capacity in whole numbers of persons marked
on a boat that is designed or intended to use one or more inboard
engines or inboard-outboard units must not exceed the value obtained by
adding 32 pounds to the value determined in paragraph (a)(2)(iii),
dividing the sum by 141 and rounding off the result to the nearest whole
number. If the fraction is less than one-half, round down to the next
whole integer and if the fraction is equal to or greater than one-half,
round up to the next higher whole integer.
[CGD 78-034, 45 FR 2030, Jan. 10, 1980, as amended by CGD 83-012, 49 FR
39328, Oct. 5, 1984; 50 FR 18636, May 2, 1985]
Sec. 183.41 Persons capacity: Outboard boats.
(a) The persons capacity in pounds marked on a boat that is designed
to use one or more outboard motors for propulsion must not exceed the
lesser of:
(1) The maximum weight capacity determined under Sec. 183.35 for
the boat minus the motor and control weight, battery weight (dry), and
full portable fuel tank weight from Table 4 of Subpart H of this part;
or
(2) For boats with a maximum persons capacity less than 550 pounds,
the maximum persons capacity determined in the following manner:
(i) Float the boat with all its permanent appurtenances.
(ii) Add, in normal operating positions, the dry motor and control
weight, battery weight, and full portable fuel tank weight, if any,
shown in Table 4 of Subpart H of this part for the maximum horsepower
capacity marked on the boat. Permanently installed fuel tanks shall be
full of fuel.
(iii) Gradually add weights along one outboard extremity of each
passenger carrying area, at the height of the seat nearest the center of
that area, but no higher than the height of the gunwale, and distributed
equally forward and aft of that center in a plane parallel to the
floorboards until the boat assumes the maximum list or trim, or both
without water coming aboard.
(iv) Compute the persons capacity in pounds using the following
formula: Persons capacity=A/0.6 where A is the total of the weights
added in paragraph (a)(2)(iii) of this section.
(b) The maximum persons capacity in whole numbers of persons marked
on a boat designed or intended to use one or more outboard motors for
propulsion must not exceed the value obtained by adding 32 pounds to the
lesser of the values determined in paragraph (a)(1) or (a)(2)(iv),
dividing the sum by 141, and rounding off the result to the nearest
whole number. If the fraction is less than one-half, round down to the
next lower whole integer and if the fraction is equal to or greater than
one-half, round up to the next higher whole integer.
[CGD 78-034, 45 FR 2030, Jan. 10, 1980, as amended by CGD 83-012, 49 FR
39328, Oct. 5, 1984; 50 FR 18636, May 2, 1985]
Sec. 183.43 Persons capacity: Boats rated for manual propulsion and
boats rated for outboard motors of 2 horsepower or less.
(a) The persons capacity in pounds marked on a boat that is rated
for manual propulsion or for motors of 2 horsepower or less must not
exceed:
(1) For boats rated for manual propulsion, 90 percent of the maximum
weight capacity in pounds; and
(2) For boats rated for motors of 2 horsepower or less, 90 percent
of the maximum weight capacity in pounds, less 25 pounds.
(b) The maximum persons capacity, in whole numbers of persons marked
on a boat that is rated for manual propulsion must not exceed the value
obtained by adding 32 pounds to the value determined in paragraph
(a)(1), dividing the sum by 141, and rounding off the result to the
nearest whole number. If the fraction is less than one-half, round down
to the next lower integer and if the fraction is equal to or greater
than one-half, round up to the next higher whole integer.
(c) The maximum persons capacity in whole numbers of persons marked
on a boat rated for motors of 2 horsepower or less must not exceed the
value obtained by adding 32 pounds to the value determined in paragraph
(a)(2), dividing the sum by 141, and rounding off the result to the
nearest whole number. If the fraction is less than one-half, round down
to the next lower
[[Page 872]]
whole integer and if the fraction is equal to or greater than one-half,
round up to the next higher whole integer.
[CGD 78-034, 45 FR 2031, Jan. 10, 1980]
Subpart D_Safe Powering
Sec. 183.51 Applicability.
This subpart applies to monohull boats less than 20 feet in length,
except sailboats, canoes, kayaks, and inflatable boats, that are
designed or intended to use one or more outboard motors for propulsion.
Sec. 183.53 Horsepower capacity.
The maximum horsepower capacity marked on a boat must not exceed the
horsepower capacity determined by the computation method discussed in
paragraph (a) of this section, or for certain qualifying boats, the
performance test method discussed in paragraph (b) of this section.
(a) The maximum horsepower capacity must be computed as follows:
(1) Compute a factor by multiplying the boat length in feet by the
maximum transom width in feet excluding handles and other similar
fittings, attachments, and extensions. If the boat does not have a full
transom, the transom width is the broadest beam in the aftermost quarter
length of the boat.
(2) Locate horsepower capacity corresponding to the factor in Table
183.53.
(3) For a boat with a factor over 52.5, if the horsepower capacity
calculated in Table 183.53 is not an exact multiple of 5, it may be
raised to the next exact multiple of 5.
(4) For flat bottom hard chine boats with a factor of 52 or less,
the horsepower capacity must be reduced by one horsepower capacity
increment in Table 183.53.
Table 183.53--Outboard Boat Horsepower Capacity
[Compute: Factor=Boat LengthxTransom Width]
If factor (nearest integer) is...................... 0-35 36-39 40-42 43-45 46-52
----------------------------------------------------------------------------------------------------------------
Horsepower Capacity is.............................. 3 5 7.5 10 15
----------------------------------------------------------------------------------------------------------------
[Note: For flat bottom hard chine boats, with factor of 52 or less, reduce one capacity limit (e.g. 5 to 3)]
----------------------------------------------------------------------------------------------------------------
No remote steering, or less than 20[sec] transom
Remote steering and at height
If factor is over 52.5 and the boat least 20[sec] transom -------------------------------------------------
has height For flat bottom hard
chine boats For other boats
----------------------------------------------------------------------------------------------------------------
Horsepower capacity is (raise to (2xFactor) -90......... (0.5xFactor)-15........ (0.8xFactor)-25
nearest multiple of 5).
----------------------------------------------------------------------------------------------------------------
(b) For boats qualifying under this paragraph, the performance test
method described in this paragraph may be used to determine the
horsepower capacity.
(1) Qualifying criteria. (i) Thirteen feet or less in length;
(ii) Remote wheel steering;
(iii) Transom height
(A) Minimum 19 inch transom height; or,
(B) For boats with at least a 19 inch motorwell height, a minimum 15
inch transom height;
(iv) Maximum persons capacity not over two persons;
(2) Boat preparation. (i) The boat must be rigged with equipment
recommended or provided by the boat and motor manufacturer and tested
with the highest horsepower production powerplant for which the boat is
to be rated, not to exceed 40 horsepower.
(ii) Standard equipment must be installed in accordance with
manufacturers' instructions.
(iii) The lowest ratio (quickest) steering system offered on the
boat model being tested must be installed.
(iv) The outboard motor must be fitted with the manufacturer's
recommended propeller providing maximum speed.
(v) Standard permanently installed fuel tanks must be no more than
one-half full. Boats without permanent tanks must be tested with one
full portable tank.
[[Page 873]]
(vi) Portable tanks must be in their designated location or placed
as far aft as possible.
(vii) The outboard motor must be placed in the lowest vertical
position on the transom or, if mounting instructions are provided with
the boat, at the height recommended.
(viii) Boat bottom, motor and propeller must be in new or almost new
condition.
Note: The use of the following special equipment should be
considered because of the potential for exceeding the capabilities of
the boat while performing the test:
Racing Type Personal Flotation Device
Helmet.
(3) Test conditions. Testing must be conducted on smooth, calm water
with the wind speed below 10 knots. The test must be conducted with no
load other than a driver who must weigh no more than 200 pounds. The
motor trim angle must be adjusted to provide maximum full throttle speed
short of excessive porpoising or propeller ventilation or
``cavitation'', so that there is no loss of directional control.
(4) Quick turn test procedure. Set throttle at a low maneuvering
speed and steer the boat straight ahead. Turn the steering wheel
180[deg] in the direction of least resistance in \1/2\ second or less
and hold it at that position without changing the throttle or trim
settings during or after the wheel change. The boat completes the
maneuver successfully if it is capable of completing a 90[deg] turn
without the driver losing control of the boat or reducing the throttle
setting. Gradually increase the boat's turn entry speed incrementally
until the boat does not complete the Quick Turn Test successfully or
successfully completes it at maximum throttle.
Note: It is recognized that operator skill and familiarity with a
particular boat and motor combination will affect the test results. It
is permissible to make a number of practice runs through the quick turn
test at any throttle setting.
(5) Test course method. Set throttle for 30 miles per hour boat
speed and run the test course set up in accordance with Figure 183.53,
passing outside the designated avoidance marker for 35 to 37.5 miles per
hour without contacting any of the course markers. If the boat
successfully completes this run of the test course, increase the
throttle setting to 35 to 37.5 miles per hour boat speed and run the
course passing outside the designated avoidance marker for that speed
without contacting any of the course markers. If the boat successfully
completes this run of the test course and the motor was not at full
throttle, increase the throttle setting to 37.5 to 42.5 miles per hour
boat speed and run the course passing outside the designated avoidance
marker for that speed without contacting any of the course markers. If
the boat successfully completes this run of the test course and the
motor was not at full throttle, increase the throttle setting to 42.5
miles per hour or more and run the course passing outside the designated
avoidance marker for that speed without contacting any of the course
markers. If the boat successfully completes this run of the test course
and the motor was not at full throttle, continue to increase the
throttle setting and run the test course passing outside the designated
avoidance marker for 42.5 miles per hour or more until the boat fails to
complete the test successfully or the boat completes the test course
maneuvers successfully at full throttle. The boat successfully completes
the test course if the driver is able to maneuver it between the
designated avoidance markers without striking the markers and without
losing control of the boat or reducing the throttle setting. There must
be no change in position of any equipment on board and there must be no
change of position of personnel in order to influence the test results.
There must be no instability evidenced by oscillating motion in the roll
or yaw axes exhibited while negotiating the course.
Note: It is recognized that operator skill and familiarity with a
particular boat and motor combination will affect the test results. It
is therefore considered permissible to make a number of practice runs
through the test course at any throttle setting.
(6) Maximum horsepower capacity. (i) For boats capable of less than
35 miles per hour, the maximum horsepower capacity must be the maximum
horsepower with which the boat was able to successfully complete the
Quick Turn Test Procedure in Sec. 183.53(b)(4) at full
[[Page 874]]
throttle or the maximum horsepower determined under the calculations in
Sec. 183.53(a) of this section.
(ii) For boats capable of 35 miles per hour or more, the maximum
horsepower capacity must be the maximum horsepower with which the boat
was able to successfully complete both the Quick Turn Test Procedure in
Sec. 183.53(b)(4) and the Test Course Method in Sec. 183.53(b)(5) at
full throttle or the calculations in Sec. 183.53(a) of this section.
(iii) The maximum horsepower capacity determined in accordance with
Sec. 183.53(b) must not exceed 40 horsepower.
Figure 183.53--Boat Horsepower Capacity Test Course--35 MPH or More
[GRAPHIC] [TIFF OMITTED] TC18OC91.021
[CGD 85-002, 51 FR 37574, Oct. 23, 1986]
Subpart E [Reserved]
Subpart F_Flotation Requirements for Inboard Boats, Inboard/Outdrive
Boats, and Airboats
Source: CGD 75-168, 42 FR 20243, Apr. 18, 1977, unless otherwise
noted.
Sec. 183.101 Applicability.
This subpart applies to monohull inboard boats, inboard/outdrive
boats, and airboats less than 20 feet in length, except sailboats,
canoes, kayaks, inflatable boats, submersibles, surface effect vessels,
amphibious vessels, and raceboats.
[CGD 75-168, 42 FR 20243, Apr. 18, 1977, as amended by USCG-1999-5832,
64 FR 34716, June 29, 1999]
Sec. 183.105 Quantity of flotation required.
(a) Each boat must have enough flotation to keep any portion of the
boat above the surface of the water when the boat has been submerged in
calm, fresh water for at least 18 hours and loaded with:
(1) A weight that, when submerged, equals two-fifteenths of the
persons capacity marked on the boat;
(2) A weight that, when submerged, equals 25 percent of the dead
weight; and
(3) A weight in pounds that, when submerged, equals 62.4 times the
volume in cubic feet of the two largest air chambers, if air chambers
are used for flotation.
(b) For the purpose of this section, ``dead weight'' means the
maximum weight capacity marked on the boat minus the persons capacity
marked on the boat.
Sec. 183.110 Definitions.
For the purpose of this subpart:
Bilge means the area in the boat, below a height of 4 inches
measured from the lowest point in the boat where liquid can collect when
the boat is in its static floating position, except engine rooms.
Connected means allowing a flow of water in excess of one-quarter
ounce per hour from the engine room bilge into any other compartment
with a 12 inch head of water on the engine room side of the bulkhead.
Engine room bilge means the area in the engine room or a connected
compartment below a height of 12 inches measured from the lowest point
where
[[Page 875]]
liquid can collect in these compartments when the boat is in its static
floating position.
Engine room means the compartment where a permanently installed
gasoline or diesel engine is installed, including connected
compartments.
Open to atmosphere means a compartment that has at least 15 square
inches of open area directly exposed to the atmosphere for each cubic
foot of net compartment volume.
Sealed compartment means an enclosure that can resist an exterior
water level of 12 inches without seepage of more than one-quarter fluid
ounce per hour.
[CGD 77-145, 43 FR 56858, Dec. 4, 1978, as amended by CGD 82-010, 48 FR
8273, Feb. 28, 1983; CGD 85-098, 52 FR 19728, May 27, 1987; CGD 96-026,
61 FR 33670, June 28, 1996; USCG-1999-5832, 64 FR 34716, June 29, 1999;
USCG-1999-5151, 64 FR 67176, Dec. 1, 1999]
Sec. 183.112 Flotation material and air chambers.
(a) Flotation materials must meet the requirements in Sec. 183.114
as listed in Table 183.114 when used in the: (1) Engine room bilge, (2)
engine room, or (3) bilge, unless located in a sealed compartment.
(b) Air chambers used to meet the flotation requirements of this
subpart must not be integral with the hull.
[CGD 77-145, 43 FR 56859, Dec. 4, 1978; 44 FR 47934, Aug. 16, 1979]
Sec. 183.114 Test of flotation materials.
(a) Vapor test. The flotation material must not reduce in buoyant
force more than 5 percent after being immersed in a fully saturated
gasoline vapor atmosphere for 30 days at a minimum temperature of 38
[deg]C.
(b) 24-hour gasoline test. The flotation material must not reduce in
buoyant force more than 5 percent after being immersed for 24 hours at
23 plus or minus 2 [deg]C in reference fuel B, of ASTM D 471
(incorporated by reference, see Sec. 183.5).
(c) 30-day gasoline test. The flotation material must not reduce in
buoyant force more than 5 percent after being immersed for 30 days at 23
plus or minus 2 [deg]C in reference fuel B, of ASTM D 471 (incorporated
by reference, see Sec. 183.5).
(d) 24-hour oil test. The flotation material must not reduce in
buoyant force more than 5 percent after being immersed for 24 hours at
23 plus or minus 2 [deg]C in reference oil No. 2, of ASTM D 471
(incorporated by reference, see Sec. 183.5).
(e) 30-day oil test. The flotation material must not reduce in
buoyant force more than 5 percent after being immersed for 30 days at 23
plus or minus 2 [deg]C in reference oil No. 2, of ASTM D 471
(incorporated by reference, see Sec. 183.5).
(f) 24-hour bilge cleaner test. The flotation material must not
reduce in buoyant force more than 5 percent after being immersed for 24
hours at 23 plus or minus 2 [deg]C in a 5-percent solution of trisodium
phosphate in water.
(g) 30-day bilge cleaner test. The flotation material must not
reduce in buoyant force more than 5 percent after being immersed for 30
days at 23 plus or minus 2 [deg]C in a 5-percent solution of trisodium
phosphate in water.
(h) The buoyant force reduction in paragraphs (a) through (g) of
this section is measured in accordance with ASTM D 2842 (incorporated by
reference, see Sec. 183.5).
Table 183.114--Flotation Performance Tests
------------------------------------------------------------------------
Area 183.110
-----------------------------
(c)
Engine-
Test 183.114 (b) room
Engine- unless (d)
room open to Bilge
bilge atmos-
phere
------------------------------------------------------------------------
(a) Vapor test............................ ........ X ........
(b) 24 hour gasoline test................. ........ ........ X
(c) 30 day gasoline test.................. X ........ ........
(d) 24 hour oil test...................... ........ ........ X
(e) 30 day oil test....................... X ........ ........
(f) 24 hour bilge cleaner test............ ........ ........ X
(g) 30 day bilge cleaner test............. X ........ ........
------------------------------------------------------------------------
[CGD 77-145, 43 FR 56859, Dec. 4, 1978; 44 FR 47934, Aug. 16, 1979, as
amended by USCG-2000-7223, 65 FR 40059, June 29, 2000]
[[Page 876]]
Subpart G_Flotation Requirements for Outboard Boats Rated for Engines of
More Than 2 Horsepower
Source: CGD 75-168, 42 FR 20243, Apr. 18, 1977, unless otherwise
noted.
General
Sec. 183.201 Applicability.
(a) This subpart applies to monohull outboard boats that are:
(1) Less than 20 feet in length; and
(2) Rated for outboard engines of more than 2 horsepower.
(b) This subpart does not apply to sailboats, canoes, kayaks,
inflatable boats, submersibles, surface effect vessels, amphibious
vessels, and raceboats.
[CGD 75-168, 42 FR 20243, Apr. 18, 1977, as amended by USCG-1999-5832,
64 FR 34716, June 29, 1999]
Sec. 183.202 Flotation and certification requirements.
Each boat to which this subpart applies must be manufactured,
constructed, or assembled to pass the stability and flotation tests
prescribed in Sec. Sec. 183.225(a), 183.230(a), and 183.235(a).
Sec. 183.205 Passenger carrying area.
(a) For the purpose of this section a boat is level when it is
supported on its keel at the two points shown in Figure 2.
(b) As used in this subpart, the term ``passenger carrying area''
means each area in a boat in which persons can sit in a normal sitting
position or stand while the boat is in operation. Passenger carrying
areas are illustrated in Figures 3 through 8.
(c) The length of the passenger carrying area is the distance along
the centerline of the boat between two vertical lines, one at the
forward end and one at the aft end of the passenger carrying area when
the boat is level as illustrated in Figures 3 and 4. For boats with a
curved stem inside the passenger carrying area, the forward vertical
line is where a line 45 degrees to the horizontal when the boat is level
is tangent to the curve of the stem, as illustrated in Figure 5. For
boats with cabins, the forward vertical line is where there is a minimum
distance of two feet between the inside top of the cabin and the water
line formed when the boat is swamped and loaded with weights under Sec.
183.220 as illustrated in Figure 6.
(d) The breadth of each passenger carrying area is the distance
between two vertical lines at the mid-length, excluding consoles, of the
passenger carrying area when the boat is level as illustrated in Figures
7 and 8. For boats with round chines inside the passenger carrying area,
the vertical line is where a transverse line 45 degrees to the
horizontal is tangent to the arc of the chine, as illustrated in Figure
8.
[CGD 75-168, 42 FR 20243, Apr. 18, 1977, as amended by USCG-1999-5832,
64 FR 34716, June 29, 1999]
Sec. 183.210 Reference areas.
(a) The forward reference area of a boat is the forward most 2 feet
of the top surface of the hull or deck, as illustrated in Figure 9.
(b) The aft reference area of a boat is the aft most two feet of the
top surface of the hull or deck, as illustrated in Figure 9.
Sec. 183.215 Reference depth.
Reference depth is the minimum distance between the uppermost
surface of the submerged reference area of a boat and the surface of the
water measured at the centerline of the boat, as illustrated in Figure
10. If there is no deck surface at the centerline of the boat from which
a measurement can be made, the reference depth is the average of two
depth measurements made on opposite sides of, and at an equal distance
from, the centerline of the boat.
Sec. 183.220 Preconditioning for tests.
A boat must meet the following conditions for at least 18 hours
before the tests required by Sec. Sec. 183.225, 183,230, and 183.235:
(a) Manufacturer supplied permanent appurtenances such as
windshields and convertible tops must be installed on the boat.
(b) The boat must be loaded with a quantity of weight that, when
submerged, is equal to the sum of the following:
[[Page 877]]
(1) The sum of 50 percent of the first 550 pounds of the persons
capacity marked on the boat and 12\1/2\ percent of the remainder of the
persons capacity.
(2) Twenty-five percent of the result of the following calculation,
but not less than zero: The maximum weight capacity marked on the boat;
less the weight shown in Column 6 of Table 4 for maximum horsepower
marked on the boat; less the persons capacity marked on the boat.
(c) The weights required by paragraph (b) of this section must be
placed in the boat so that the center of gravity of each amount of
weight required by paragraphs (b)(1) and (b)(2) of this section is
within the shaded area illustrated in Figure 11. The location and
dimensions of the shaded area are as follows:
(1) The shaded area is centered at the mid-length of the passenger
carrying area and at the mid-breadth of the boat;
(2) The length of the shaded area, measured along the centerline of
the boat, is equal to 40 percent of the length of the passenger carrying
area of the boat; and
(3) The breadth of the shaded area, measured at the midlength of the
passenger carrying area, is equal to 40 percent of the breadth of the
passenger carrying area of the boat.
(d) Weight must be placed in the normal operating position of the
motor and controls and the battery in lieu of this equipment. The
required quantity of weight used for this purpose depends upon the
maximum rated horsepower of the boat being tested and is specified in
Columns 2 and 4 of Table 4 for the swamped weight of the motor and
controls and for the submerged weight or the battery, respectively.
(e) Permanent fuel tanks must be filled with fuel and each external
opening into the fuel tank must be sealed.
(f) The boat must be keel down in the water.
(g) The boat must be swamped, allowing water to flow between the
inside and outside of the boat, either over the sides, through a hull
opening, or both. Entrapped air in the flooded portion of the boat must
be eliminated.
(h) Water must flood the two largest air chambers and all air
chambers integral with the hull.
[CGD 75-168, 42 FR 20243, Apr. 18, 1977, as amended by USCG-1999-5832,
64 FR 34716, June 29, 1999]
Sec. 183.222 Flotation material and air chambers.
(a) Flotation materials must meet the requirements in Sec. 183.114
as listed in Table 183.114 when used in the bilge, unless located in a
sealed compartment.
(b) Air chambers used to meet the flotation requirements of this
subpart must not be integral with the hull.
[CGD 77-145, 43 FR 56859, Dec. 4, 1978; 44 FR 47934, Aug. 16, 1979]
Tests
Sec. 183.225 Flotation test for persons capacity.
Flotation standard. When the conditions prescribed in Sec. 183.220
are met, the boat must float in fresh, calm water as follows:
(a) The angle of heel does not exceed 10 degrees from the
horizontal.
(b) Any point on either the forward or aft reference area is above
the surface of the water.
(c) The reference depth at the reference area that is opposite the
reference area that is above the surface of the water is 6 inches or
less.
Sec. 183.230 Stability test.
(a) Flotation standard. When the conditions prescribed in Sec.
183.220 (a), (d) through (h) and paragraphs (b) and (c) of this section
are met, the boat must float in fresh, calm water as follows:
(1) The angle of heel does not exceed 30 degrees from the
horizontal.
(2) Any point on either the forward or aft reference area is above
the surface of the water.
(3) The reference depth at the reference area that is opposite the
reference area that is above the surface of the water is 12 inches or
less.
(b) Quantity of weight used. Load the boat with a quantity of weight
that, when submerged, is equal to the sum of the following:
(1) One-half of the quantity of weight required by Sec.
183.220(b)(1).
[[Page 878]]
(2) The quantity of weight required by Sec. 183.220(b)(2).
(c) Placement of quantity of weight: starboard side. Place the
weight required by paragraph (b) of this section in the boat so that:
(1) The quantity of weight required by Sec. 183.220(b)(2) is
positioned in accordance with Sec. 183.220(c); and
(2) One-half the quantity of weight required by Sec. 183.220(b)(1)
is uniformly distributed over a distance along the outboard perimeter of
the starboard side of the passenger carrying area that is equal to at
least 30 percent of the length of the passenger carrying area so that
the center of gravity of the quantity of weight is located within the
shaded area illustrated in Figure 12, the center of gravity of the
amount of weight placed on the floor of the boat is at least 4 inches
above the floor, and the center of gravity of the amount of weight
placed on a seat is at least 4 inches above the seat. The location and
dimensions of the shaded area are as follows:
(i) The shaded area is centered at the mid-length of the passenger
carrying area;
(ii) The length of the shaded area is equal to 70 percent of the
length of the passenger carrying area; and
(iii) The breadth of the shaded area is 6 inches from:
(A) For weights placed on the floor, the outboard perimeter of the
passenger carrying area; and
(B) For weights placed on a seat, a vertical line inside the
passenger carrying area as illustrated in Figure 13.
(d) Placement of quantity of weight: port side. The quantity of
weight required by paragraph (b)(1) of this section is placed along the
port side of the passenger carrying area in accordance with the
conditions prescribed in paragraph (c)(2) of this section.
Sec. 183.235 Level flotation test without weights for persons capacity.
When the conditions prescribed in Sec. 183.220 (a) and (d) through
(h) are met, the boat must float in fresh, calm water as follows:
(a) The angle of heel does not exceed 10 degrees from the
horizontal.
(b) Any point on either the forward or aft reference area is above
the surface of the water.
(c) The reference depth at the reference area that is opposite the
reference area that is above the surface of the water is 6 inches or
less.
[CGD 77-145, 43 FR 56859, Dec. 4, 1978, as amended by USCG-1999-5832, 64
FR 34716, June 29, 1999]
Subpart H_Flotation Requirements for Outboard Boats Rated for Engines of
2 Horsepower or Less
Source: CGD 75-168, 42 FR 20245, Apr. 18, 1977, unless otherwise
noted.
General
Sec. 183.301 Applicability.
(a) This subpart applies to monohull outboard boats that are:
(1) Less than 20 feet in length; and
(2) Rated for manual propulsion or outboard engines of 2 horsepower
or less.
(b) This subpart does not apply to sailboats, canoes, kayaks,
inflatable boats, submersibles, surface effect vessels, amphibious
vessels, and raceboats.
[CGD 75-168, 42 FR 20245, Apr. 18, 1977, as amended by USCG-1999-5832,
64 FR 34716, June 29, 1999]
Sec. 183.302 Flotation requirements.
Each boat to which this subpart applies must be manufactured,
constructed, or assembled to pass the stability and flotation tests
prescribed in Sec. Sec. 183.325(a), 183.330(a), and 183.335(a).
Sec. 183.305 Passenger carrying area.
(a) For the purpose of this section, a boat is level when it is
supported on its keel at the two points shown in Figure 2.
(b) As used in this subpart, the term ``passenger carrying area''
means each area in a boat in which persons can sit in a normal sitting
position or stand while the boat is in operation. Passenger carrying
areas are illustrated in Figures 3 through 8.
(c) The length of each passenger carrying area is the distance along
the centerline of the boat between two
[[Page 879]]
vertical lines, one at the forward end and one at the aft end of the
passenger carrying area, when the boat is level, as illustrated in
Figures 3 and 4. For boats with a curved stem inside the passenger
carrying area, the forward vertical line is where a line 45 degrees to
the horizontal when the boat is level is tangent to the curve of the
stem, as illustrated in Figure 5. For boats with cabins, the forward
vertical line is where there is a minimum distance of two feet between
the inside top of the cabin and the water line formed when the boat is
swamped and loaded with weights under Sec. 183.320 as illustrated in
Figure 6.
(d) The breadth of the passenger carrying area is the distance
beteen two vertical lines at the mid-length, excluding consoles, of the
passenger carrying area when the boat is level as illustrated in Figures
7 and 8. For boats with round chines inside the passenger carrying area,
the vertical line is where a transverse line 45 degrees to the
horizontal is tangent to the arc of the chine, as illustrated in Figure
7.
[CGD 75-168, 42 FR 20245, Apr. 18, 1977; 42 FR 24738, May 16, 1977]
Sec. 183.310 Reference areas.
(a) The forward reference area of a boat is the forwardmost 2 feet
of the top surface of the hull or deck as illustrated in Figure 9.
(b) The aft reference area of a boat is the aftmost two feet of the
top surface of the hull or deck, as illustrated in Figure 9.
Sec. 183.315 Reference depth.
Reference depth is the minimum distance between the uppermost
surface of the submerged reference area of a boat and the surface of the
water measured at the centerline of the boat, as illustrated in Figure
10. If there is no deck surface at the centerline of the boat from which
a measurement can be made, the reference depth is the average of two
depth measurements made on opposite sides of, and at an equal distance
from, the centerline of the boat.
Sec. 183.320 Preconditioning for tests.
A boat must meet the following conditions for at least 18 hours
before the tests required by Sec. Sec. 183.325, 183.330, and 183.335:
(a) Manufacturer supplied permanent appurtenances such as
windshields, and convertible tops must be installed on the boat.
(b) The boat must be loaded with a quantity of weight that, when
submerged, is equal to the sum of the following:
(1) Two-fifteenths of the persons capacity marked on the boat.
(2) Twenty-five percent of the result of the following calculation,
but not less than zero: the maximum weight capacity marked on the boat;
less the weight shown in column 6 of Table 4 for the maximum horsepower
marked on the boat; less the persons capacity marked on the boat.
(c) The weights required by paragraph (b) of this section are placed
in the boat so that the center of gravity of each amount of weight
required by paragraphs (b)(1) and (b)(2) of this section is within the
shaded area illustrated in Figure 11. The location and dimensions of the
shaded area are as follows:
(1) The shaded area is centered at the mid-length of the passenger
carrying area and at the mid-breadth of the boat;
(2) The length of the shaded area, measured along the centerline of
the boat, is equal to 40 percent of the length of the passenger carrying
area of the boat; and
(3) The breadth of the shaded area, measured at the mid-length of
the passenger carrying area, is equal to 40 percent of the breadth of
the passenger carrying area of the boat.
(d) Weight must be placed in the normal operating position of the
motor and controls in lieu of this equipment. The quantity of weight
used for this purpose depends upon the maximum rated horsepower of the
boat being tested and is specified in Column 2 of Table 4 for the
swamped weight of the motor and controls.
(e) Permanent fuel tanks must be filled with fuel and each external
opening into the fuel tank must be sealed.
(f) The boat must be keel down in the water.
(g) The boat must be swamped, allowing water to flow between the
inside
[[Page 880]]
and the outside of the boat, either over the sides, through a hull
opening, or both. Entrapped air in the flooded portion of the boat must
be eliminated.
Sec. 183.322 Flotation materials.
(a) Flotation materials must meet the requirements in Sec. 183.114
as listed in Table 183.114 when used in the bilge, unless located in a
sealed compartment.
[CGD 77-145, 43 FR 56859, Dec. 4, 1978; 44 FR 47934, Aug. 16, 1979]
Tests
Sec. 183.325 Flotation test for persons capacity.
Flotation standard. When the conditions prescribed in Sec. 183.320
are met, the boat must float in fresh, calm water as follows:
(a) The angle of heel does not exceed 10 degrees from the
horizontal.
(b) Any point on either the forward or aft reference area is above
the surface of the water.
(c) The reference depth at the reference area that is opposite the
reference area that is above the surface of the water is 6 inches or
less.
Sec. 183.330 Stability test.
(a) Flotation standard. When the conditions prescribed in Sec.
183.320 (a), (d) through (g) and paragraphs (b) and (c) of this section
are met, the boat must float in fresh, calm water as follows:
(1) The angle of heel does not exceed 30 degrees from the
horizontal.
(2) Any point on either the forward or aft reference area is above
the surface of the water.
(3) The reference depth at the reference area that is opposite the
reference area that is above the surface of the water is 12 inches or
less.
(b) Quantity of weight used. Load the boat with quantity of weight
that, when submerged, is equal to the sum of the following:
(1) One-half the quantity of weight required by Sec. 183.320(b)(1).
(2) The quantity of weight required by Sec. 183.320(b)(2).
(c) Placement of quantity of weight: starboard side. Place the
quantity of weight required by paragraph (b) of this section in the boat
so that:
(1) The quantity of weight required by Sec. 183.320(b)(2) is
positioned in accordance with Sec. 183.320(c); and
(2) One-half the quantity of weight required by Sec. 183.320(b)(1)
is uniformly distributed over a distance along the outboard perimeter of
the starboard side of the passenger carrying area that is equal to at
least 30 percent of the length of the passenger carrying area so that
the center of gravity of the quantity of weight is located within the
shaded area illustrated in Figure 12, the center of gravity of the
amount of weight placed on the floor of the boat is at least 4 inches
above the floor and the center of gravity of the amount of weight placed
on a seat is at least 4 inches above the seat. The location and
dimensions of the shaded area are as follows:
(i) The shaded area is centered at the mid-length of the passenger
carrying area;
(ii) The length of the shaded area is equal to 70 percent of the
length of the passenger carrying area; and
(iii) The breadth of the shaded area is 6 inches from:
(a) For weights placed on the floor, the outboard perimeter of the
passenger carrying area; and
(b) For weights placed on a seat, a vertical line inside the
passenger carrying area as illustrated in Figure 13.
(d) Placement of quantity of weight: port side. The quantity of
weight required by paragraph (b)(1) of this section is placed along the
port side of the passenger carrying area in accordance with the
conditions prescribed in paragraph (c)(2) of this section.
Sec. 183.335 Level flotation test without weights for persons capacity.
When the conditions prescribed in Sec. 183.320 (a) and (d) through
(g) are met, the boat must float in fresh, calm water as follows:
(a) The angle of heel does not exceed 10 degrees from the
horizontal.
(b) Any point on either the forward or aft reference area is above
the surface of the water.
[[Page 881]]
(c) The reference depth at the reference area that is opposite the
reference area that is above the surface of the water is 6 inches or
less.
[CGD 75-168, 42 FR 20245, Apr. 18, 1977, as amended by USCG-1999-5832,
64 FR 34716, June 29, 1999]
Table 4 to Subpart H of Part 183--Weights (Pounds) of Outboard Motor and
Related Equipment for Various Boat Horsepower Ratings
----------------------------------------------------------------------------------------------------------------
Motor and control weight Battery weight Full
---------------------------------------------------- portable
Boat horsepower rating fuel tank 1+3+5
Dry Swamped Dry Submerged weight
----------------------------------------------------------------------------------------------------------------
Column No.
--------------
1 2 3 4 5 6
--------------
0.1 to 2............................ 25 20 ........... ........... ........... 25
2.1 to 3.9.......................... 40 34 ........... ........... ........... 40
4.0 to 7............................ 60 52 ........... ........... 25 35
7.1 to 15........................... 90 82 20 11 50 160
15.1 to 25.......................... 125 105 45 25 50 220
25.1 to 45.......................... 170 143 45 25 100 315
45.1 to 60.......................... 235 195 45 25 100 380
60.1 to 80.......................... 280 235 45 25 100 425
80.1 to 145......................... 405 352 45 25 100 550
145.1 to 275........................ 430 380 45 25 100 575
275.1 and up........................ 605 538 45 25 100 750
Transoms designed for twin motors
50.1 to 90.......................... 340 286 90 50 100 530
90.1 to 120......................... 470 390 90 50 100 660
120.1 to 160........................ 560 470 90 50 100 750
160.1 to 290........................ 810 704 90 50 100 1000
290.1 to 550........................ 860 760 90 50 100 1050
550.1 and up........................ 1210 1076 90 50 100 1400
----------------------------------------------------------------------------------------------------------------
[CGD 83-012, 49 FR 39328, Oct. 5, 1984]
[[Page 882]]
Figures to Subpart H of Part 183
[GRAPHIC] [TIFF OMITTED] TC18OC91.022
Subpart I_Electrical Systems
Source: CGD 73-217, 42 FR 5944, Jan. 31, 1977, unless otherwise
noted.
General
Sec. 183.401 Purpose, applicability, and effective dates.
(a) This subpart applies to all boats that have gasoline engines,
except outboard engines, for electrical generation, mechanical power, or
propulsion.
[[Page 883]]
(b) [Reserved]
[CGD 73-217, 42 FR 5944, Jan. 31, 1977, as amended by CGD 81-092, 48 FR
55736, Dec. 15, 1983; USCG-1999-5832, 64 FR 34716, June 29, 1999]
Sec. 183.402 Definitions.
As used in this subpart--
AWG means American Wire Gauge.
Electrical component means electrical equipment such as, but not
limited to, conductors, solenoids, motors, generators, alternators,
distributors, resistors, appliances and electrical control devices.
Pigtails means external power conductors or wires that are part of
electrical components and appliances, such as bilge pumps, blowers,
lamps, switches, solenoids, and fuses.
Sheath means a material used as a continuous protective covering,
such as electrical tape, molded rubber, molded plastic, or flexible
tubing, around one or more insulated conductors.
[CGD 73-217, 42 FR 5944, Jan. 31, 1977, as amended by CGD 85-098, 52 FR
19728, May 27, 1987; CGD 96-026, 61 FR 33670, June 28, 1996]
Sec. 183.405 General.
Each electrical component on a boat to which this subpart applies
must meet the requirements of this subpart unless the component is part
of an outboard engine or part of portable equipment.
Manufacturer Requirements
Sec. 183.410 Ignition protection.
(a) Each electrical component must not ignite a propane gas and air
mixture that is 4.25 to 5.25 percent propane gas by volume surrounding
the electrical component when it is operated at each of its manufacturer
rated voltages and current loadings, unless it is isolated from gasoline
fuel sources, such as engines, and valves, connections, or other
fittings in vent lines, fill lines, distribution lines or on fuel tanks,
in accordance with paragraph (b) of this section.
(b) An electrical component is isolated from a gasoline fuel source
if:
(1) A bulkhead that meets the requirements of paragraph (c) of this
section is between the electrical component and the gasoline fuel
source;
(2) The electrical component is:
(i) Lower than the gasoline fuel source and a means is provided to
prevent fuel and fuel vapors that may leak from the gasoline fuel source
from becoming exposed to the electrical component; or
(ii) Higher than the gasoline fuel source and a deck or other
enclosure is between it and the gasoline fuel source; or
(3) The space between the electrical component and the gasoline fuel
source is at least two feet and the space is open to the atmosphere.
(c) Each bulkhead required by paragraph (b)(1) of this section must:
(1) Separate the electrical component from the gasoline fuel source
and extend both vertically and horizontally the distance of the open
space between the fuel source and the ignition source;
(2) Resist a water level that is 12 inches high or one-third of the
maximum height of the bulkhead, whichever is less, without seepage of
more than one-quarter fluid ounce of fresh water per hour; and
(3) Have no opening located higher than 12 inches or one-third the
maximum height of the bulkhead, whichever is less, unless the opening is
used for the passage of conductors, piping, ventilation ducts,
mechanical equipment, and similar items, or doors, hatches, and access
panels, and the maximum annular space around each item or door, hatch or
access panel must not be more than one-quarter inch.
Sec. 183.415 Grounding.
If a boat has more than one gasoline engine, grounded cranking motor
circuits must be connected to each other by a common conductor circuit
that can carry the starting current of each of the grounded cranking
motor circuits.
Sec. 183.420 Batteries.
(a) Each installed battery must not move more than one inch in any
direction when a pulling force of 90 pounds or twice the battery weight,
whichever is less, is applied through the center of gravity of the
battery as follows:
(1) Vertically for a duration of one minute.
[[Page 884]]
(2) Horizontally and parallel to the boat's center line for a
duration of one minute fore and one minute aft.
(3) Horizontally and perpendicular to the boat's center line for a
duration of one minute to starboard and one minute to port.
(b) Each battery must be installed so that metallic objects cannot
come in contact with the ungrounded battery terminals.
(c) Each metallic fuel line and fuel system component within 12
inches and above the horizontal plane of the battery top surface as
installed must be shielded with dielectric material.
(d) Each battery must not be directly above or below a fuel tank,
fuel filter, or fitting in a fuel line.
(e) A vent system or other means must be provided to permit the
discharge from the boat of hydrogen gas released by the battery.
(f) [Reserved]
(g) Each battery terminal connector must not depend on spring
tension for its mechanical connection to the terminal.
[CGD 73-217, 42 FR 5944, Jan. 31, 1977, as amended by CGD 81-092, 48 FR
55736, Dec. 15, 1983]
Sec. 183.425 Conductors: General.
(a) Each conductor must be insulated, stranded copper.
(b) Except for intermittent surges each conductor must not carry a
current greater than that specified in Table 5 for the conductor's gauge
and temperature rating.
(c) For conductors in engine spaces, amperages must be corrected by
the appropriate correction factor in note 1 of Table 5.
(d) Each conductor in a multiconductor sheath must be at least a No.
18 AWG conductor.
(e) Each conductor installed separately must be at least a No. 16
AWG conductor.
(f) Each No. 18 AWG conductor in a multiconductor sheath may not
extend out of the sheath more than 30 inches.
(g) This section does not apply to communications systems;
electronic navigation equipment; electronic circuits having a current
flow of less than one ampere; conductors which are totally inside an
equipment housing; resistance conductors that control circuit amperage;
high voltage secondary conductors and terminations that are in ignition
systems; pigtails of less than seven inches of exposed length and
cranking motor conductors.
Table 5--Allowable Amperage of Conductors
----------------------------------------------------------------------------------------------------------------
Temperature rating of conductor insulation
-------------------------------------------------------------------------
75 80 90 105 125
Conductor size (AWG) 60 [deg]C [deg]C [deg]C [deg]C [deg]C [deg]C 200 [deg]C
(140 (167 (176 (194 (221 (257 (392
[deg]F) [deg]F) [deg]F) [deg]F) [deg]F) [deg]F) [deg]F)
----------------------------------------------------------------------------------------------------------------
18.................................... 10 10 15 20 20 25 25
16.................................... 15 15 20 25 25 30 35
14.................................... 20 20 25 30 35 40 45
12.................................... 25 25 35 40 45 50 55
10.................................... 40 40 50 55 60 70 70
8..................................... 55 65 70 70 80 90 100
6..................................... 80 95 100 100 120 125 135
4..................................... 105 125 130 135 160 170 180
3..................................... 120 145 150 155 180 195 210
2..................................... 140 170 175 180 210 225 240
1..................................... 165 195 210 210 245 265 280
0..................................... 195 230 245 245 285 305 325
00.................................... 225 265 285 285 330 355 370
000................................... 260 310 330 330 385 410 430
0000.................................. 300 360 385 385 445 475 510
---------------------------------------
NOTES
----------------------------------------------------------------------------------------------------------------
1. See the following table: 60 [deg]C 75 80 90 105 125 200 [deg]C
[deg]C [deg]C [deg]C [deg]C [deg]C
(140 (167 (176 (194 (221 (257 (392
[deg]F) [deg]F) [deg]F) [deg]F) [deg]F) [deg]F) [deg]F)
Temperature rating of conductor..... 0.58 0.75 0.78 0.82 0.85 0.89 1.00
2. See the following table: Correction
factor
Number of current carrying
conductors:
3................................. 0.70
[[Page 885]]
4 to 6............................ .60
7 to 24........................... .50
25 and above...................... .40
----------------------------------------------------------------------------------------------------------------
[CGD 73-217, 42 FR 5944, Jan. 31, 1977; 42 FR 24739, May 16, 1977, as
amended by CGD 81-092, 48 FR 55736, Dec. 15, 1983]
Sec. 183.430 Conductors in circuits of less than 50 volts.
(a) Each conductor in a circuit that has a nominal voltage of less
than 50 volts must:
(1) Meet the requirements of Sec. 183.435; or
(2) Meet:
(i) The insulating material temperature rating requirements of SAE
Standard J378; and
(ii) SAE Standard J1127, or SAE Standard 1128.
(b) This section does not apply to communication systems; electronic
navigation equipment; resistance conductors that control circuit
amperage; and pigtails of less than seven inches of exposed length.
[CGD 73-217, 42 FR 5944, Jan. 31, 1977, as amended by CGD 87-009, 53 FR
36971, Sept. 23, 1988]
Sec. 183.435 Conductors in circuits of 50 volts or more.
(a) Each conductor in a circuit that has a nominal voltage of 50
volts or more must be:
(1) A conductor that has insulation listed and classified moisture
resistant and flame retardant in Article 310, NFPA No. 70, National
Electric Code;
(2) A flexible cord type SO, STO, ST, SJO, SJT, or SJTO listed in
Article 400, NFPA No. 70, National Electric Code;
(3) A conductor that meets IEEE Standard 45.
(4) A conductor that meets UL Standard 1426.
(b) Where the nominal circuit voltage of each of three or more
current carrying conductors in a duct, bundle, or cable is 50 volts or
more, the amperages of each of those conductors must not exceed the
value in table 5 multiplied by the correction factor in note 2 to Table
5 for the number of conductors that carry 50 volts or more.
(c) This section does not apply to communication systems; electronic
navigation equipment; resistance conductors that control circuit
amperage; conductors in secondary circuits of ignition systems; and
pigtails of less than seven inches of exposed length.
[CGD 73-217, 42 FR 5944, Jan. 31, 1977; 42 FR 24739, May 16, 1977, as
amended by CGD 80-047 and CGD 80-046, 45 FR 85450, Dec. 29, 1980; CGD
87-009, 53 FR 36972, Sept. 23, 1988]
Sec. 183.440 Secondary circuits of ignition systems.
(a) Each conductor in a secondary circuit of an ignition system must
meet SAE Standard J557.
(b) The connection of each ignition conductor to a spark plug, coil,
or distributor must have a tight fitting cap, boot, or nipple.
[CGD 73-217, 42 FR 5944, Jan. 31, 1977, as amended by USCG-1999-5832, 64
FR 34716, June 29, 1999]
Sec. 183.445 Conductors: Protection.
(a) Each conductor or group of conductors that passes through a
bulkhead, structural member, junction box, or other rigid surface must
be protected from abrasion.
(b) Each ungrounded terminal or stud that is continuously energized
must meet Sec. 183.455 or must have a boot, nipple, cap, cover, or
shield that prevents accidental short-circuiting at the terminals or
studs.
[CGD 81-092, 48 FR 55736, Dec. 15, 1983]
Sec. 183.455 Overcurrent protection: General.
(a) Each ungrounded current-carrying conductor must be protected by
a
[[Page 886]]
manually reset, tripfree circuit breaker or fuse.
(b) A manually reset, trip-free circuit breaker or fuse must be
placed at the source of power for each circuit or conductor except:
(1) If it is physically impractical to place the circuit breaker or
fuse at the source of power, it may be placed within seven inches of the
source of power for each circuit or conductor measured along the
conductor.
(2) If it is physically impractical to place the circuit breaker or
fuse at or within seven inches of the source of power, it may be placed
within 40 inches of the source of power for each circuit or conductor,
measured along the conductor, if the conductor is contained throughout
its entire distance between the source of power and the required circuit
breaker or fuse in a sheath or enclosure such as a junction box, control
box, or enclosed panel.
(c) The current rating of each circuit breaker or fuse must not
exceed:
(1) For circuits of less than 50 volts, 150% of the value of the
amperage in Table 5 for the conductor size it is protecting; and
(2) For circuits of 50 volts or more, the value of the amperage in
Table 5 for the conductor size it is protecting. If this value does not
correspond to a standard size or rated circuit breaker or fuse the next
larger size or rated circuit breaker or fuse may be used if it does not
exceed 150% of the allowed current capacity of the conductor.
(d) The voltage rating of each circuit breaker or fuse must not be
less than the nominal circuit voltage of the circuit it is protecting.
(e) This section does not apply to resistance conductors that
control circuit amperage; conductors in secondary circuits of ignition
systems; pigtails of less than seven inches of exposed length; and power
supply conductors in cranking motor circuits.
[CGD 73-217, 42 FR 5944, Jan. 31, 1977, as amended by CGD 78-090, 44 FR
68466, Nov. 29, 1979]
Sec. 183.460 Overcurrent protection: Special applications.
(a) Each ungrounded output conductor from a storage battery must
have a manually reset, trip-free circuit breaker or fuse, unless the
output conductor is in the main power feed circuit from the battery to
an engine cranking motor. The circuit breaker or fuse must be within 72
inches of the battery measured along the conductor, unless, for boats
built prior to August 1, 1985, the circuit has a switch that disconnects
the battery.
(b) Each ungrounded output conductor from an alternator or
generator, except for self-limiting alternators or generators, must have
a circuit breaker or fuse that has a current rating that does not exceed
120 percent of the maximum rated current of the alternator or generator
at 60 [deg]C.
[CGD 73-217, 42 FR 5944, Jan. 31, 1977, as amended by CGD 81-092, 48 FR
55736, Dec. 15, 1983]
Subpart J_Fuel Systems
Source: CGD 74-209, 42 FR 5950, Jan. 31, 1977, unless otherwise
noted.
General
Sec. 183.501 Applicability.
(a) This subpart applies to all boats that have gasoline engines,
except outboard engines, for electrical generation, mechanical power, or
propulsion.
(b) [Reserved]
[CGD 74-209, 42 FR 5950, Jan. 31, 1977, as amended by CGD 81-092, 48 FR
55736, Dec. 15, 1983; USCG-1999-5832, 64 FR 34716, June 29, 1999]
Sec. 183.505 Definitions.
As used in this subpart:
Flame arrestor means a device or assembly that prevents passage of
flame through a fuel vent.
Fuel system means the entire assembly of the fuel fill, vent, tank,
and distribution components, including pumps, valves, strainers,
carburetors, and filters.
Static floating position means the attitude in which a boat floats
in calm water, with each fuel tank filled to its rated capacity, but
with no person or item of portable equipment on board.
[CGD 74-209, 42 FR 5950, Jan. 31, 1977, as amended by CGD 85-098, 52 FR
19728, May 27, 1987]
[[Page 887]]
Sec. 183.507 General.
Each fuel system component on a boat to which this subpart applies
must meet the requirements of this subpart unless the component is part
of an outboard engine or is part of portable equipment.
Equipment Standards
Sec. 183.510 Fuel tanks.
(a) Each fuel tank in a boat must have been tested by its
manufacturer under Sec. 183.580 and not leak when subjected to the
pressure marked on the tank label under Sec. 183.514(b)(5).
(b) Each fuel tank must not leak if subjected to the fire test under
Sec. 183.590. Leakage is determined by the static pressure test under
Sec. 183.580, except that the test pressure must be at least one-fourth
PSIG.
(c) Each fuel tank of less than 25 gallons capacity must not leak if
tested under Sec. 183.584.
(d) Each fuel tank with a capacity of 25 to 199 gallons must not
leak if tested under Sec. 183.586.
(e) Each fuel tank of 200 gallons capacity or more must not leak if
tested under Sec. Sec. 183.586 and 183.588.
[CGD 74-209, 42 FR 5950, Jan. 31, 1977, as amended by CGD 81-092, 48 FR
55736, Dec. 15, 1983]
Sec. 183.512 Fuel tanks: Prohibited materials.
(a) A fuel tank must not be constructed from terneplate.
(b) Unless it has an inorganic sacrificial galvanic coating on the
inside and outside of the tank, a fuel tank must not be constructed from
black iron or carbon steel.
(c) A fuel tank encased in cellular plastic or in fiber reinforced
plastic must not be constructed from a ferrous alloy.
[CGD 74-209, 42 FR 5950, Jan. 31, 1977; 42 FR 24739, May 16, 1977]
Sec. 183.514 Fuel tanks: Labels.
(a) Each fuel tank must have a label that meets the requirements of
paragraphs (b) through (d) of this section.
(b) Each label required by paragraph (a) of this section must
contain the following information:
(1) Fuel tank manufacturer's name (or logo) and address.
(2) Month (or lot number) and year of manufacture.
(3) Capacity in U.S. gallons.
(4) Material of construction.
(5) The pressure the tank is designed to withstand without leaking.
(6) Model number, if applicable.
(7) The statement, ``This tank has been tested under 33 CFR
183.510(a).''
(8) If the tank is tested under Sec. 183.584 at less than 25g
vertical accelerations the statement, ``Must be installed aft of the
boat's half length.''
(c) Each letter and each number on a label must:
(1) Be at least \1/16\ inch high and
(2) Contrast with the basic color of the label or be embossed on the
label.
(d) Each label must:
(1) Withstand the combined effects of exposure to water, oil, salt
spray, direct sunlight, heat, cold, and wear expected in normal
operation of the boat, without loss of legibility; and
(2) Resist efforts to remove or alter the information on the label
without leaving some obvious sign of such efforts.
[CGD 74-209, 42 FR 5950, Jan. 31, 1977, as amended by CGD 81-092, 48 FR
55737, Dec. 15, 1983; USCG-1999-5832, 64 FR 34716, June 29, 1999]
Sec. 183.516 Cellular plastic used to encase fuel tanks.
(a) Cellular plastic used to encase metallic fuel tanks must:
(1) Not change volume by more than five percent or dissolve after
being immersed in any of the following liquids for 24 hours at 29
[deg]C:
(i) Reference fuel B ASTM D 471 (incorporated by reference, see
Sec. 183.5).
(ii) No. 2 reference oil of ASTM D 471 (incorporated by reference,
see Sec. 183.5).
(iii) Five percent solution of trisodium phosphate in water; and
(2) Not absorb more than 0.12 pound of water per square foot of cut
surface, measure under Military Specification MIL P-21929B.
(b) Non-polyurethane cellular plastic used to encase metallic fuel
tanks must have a compressive strength of at least 60 pounds per square
inch at ten percent deflection measured under
[[Page 888]]
ASTM D 1621 (incorporated by reference, see Sec. 183.5), ``Compressive
Strength of Rigid Cellular Plastics''.
(c) Polyurethane cellular plastic used to encase metallic fuel tanks
must have a density of at least 2.0 pounds per cubic foot, measured
under ASTM D 1622 (incorporated by reference, see Sec. 183.5),
``Apparent Density of Rigid Cellular Plastics.''
[CGD 74-209, 42 FR 5950, Jan. 31, 1977, as amended by CGD 77-98, 42 FR
36253, July 14, 1977; CGD 81-092, 48 FR 55737, Dec. 15, 1983; USCG-2000-
7223, 65 FR 40059, June 29, 2000]
Sec. 183.518 Fuel tank openings.
Each opening into the fuel tank must be at or above the topmost
surface of the tank.
Sec. 183.520 Fuel tank vent systems.
(a) Each fuel tank must have a vent system that prevents pressure in
the tank from exceeding 80 percent of the pressure marked on the tank
label under Sec. 183.514(b)(5).
(b) Each vent must:
(1) Have a flame arrester that can be cleaned unless the vent is
itself a flame arrestor; and
(2) Not allow a fuel overflow at the rate of up to two gallons per
minute to enter the boat.
[CGD 74-209, 42 FR 5950, Jan. 31, 1977, as amended by CGD 77-98, 42 FR
36253, July 14, 1977]
Sec. 183.524 Fuel pumps.
(a) Each diaphragm pump must not leak fuel from the pump if the
primary diaphragm fails.
(b) Each electrically operated fuel pump must not operate except
when the engine is operating or when the engine is started.
(c) If tested under Sec. 183.590, each fuel pump, as installed in
the boat, must not leak more than five ounces of fuel in 2\1/2\ minutes,
inclusive of leaks from fuel line, fuel filter and strainer.
[CGD 74-209, 42 FR 5950, Jan. 31, 1977, as amended by CGD 77-98, 42 FR
36253, July 14, 1977]
Sec. 183.526 Carburetors.
(a) [Reserved]
(b) Each carburetor must not leak more than five cubic centimeters
of fuel in 30 seconds when:
(1) The float valve is open;
(2) The carburetor is at half throttle; and
(3) The engine is cranked without starting; or
(4) The fuel pump is delivering the maximum pressure specified by
its manufacturer.
(c) Each updraft and horizontal draft carburetor must have a device
that:
(1) Collects and holds fuel that flows out of the carburetor venturi
section toward the air intake;
(2) Prevents collected fuel from being carried out of the carburetor
assembly by the shock wave of a backfire or by reverse air flow; and
(3) Returns collected fuel to the engine induction system after the
engine starts,
[CGD 74-209, 42 FR 5950, Jan. 31, 1977, as amended by CGD 77-98, 42 FR
36253, July 14, 1977]
Sec. 183.528 Fuel stop valves.
(a) Each electrically operated fuel stop valve in a fuel line
between the fuel tank and the engine must:
(1) Open electrically only when the ignition switch is on; and
(2) Operate manually.
(b) If tested in accordance with the fire test under Sec. 183.590,
a fuel stop valve installed in a fuel line system requiring metallic
fuel lines or ``USCG Type A1'' hose must not leak fuel.
[CGD 74-209, 42 FR 5950, Jan. 31, 1977, as amended by CGD 85-098, 52 FR
19728, May 27, 1987]
Sec. 183.530 Spud, pipe, and hose fitting configuration.
Except when used for a tank fill line, each spud, pipe, or hose
fitting used with hose clamps must have:
(a) A bead;
(b) A flare; or
(c) A series of annular grooves or serrations no less than 0.015
inches deep, except a continuous helical thread, knurl, or groove.
[CGD 74-209, 42 FR 5950, Jan. 31, 1977, as amended by USCG-1999-5832, 64
FR 34716, June 29, 1999]
[[Page 889]]
Sec. 183.532 Clips, straps, and hose clamps.
(a) Each clip, strap, and hose clamp must:
(1) Be made from a corrosion resistant material; and
(2) Not cut or abrade the fuel line.
(b) If tested in accordance with the fire test under Sec. 183.590,
a hose clamp installed on a fuel line system requiring metallic fuel
lines or ``USCG Type A1'' hose must not separate under a one pound
tensile force.
[CGD 74-209, 42 FR 5950, Jan. 31, 1977, as amended by CGD 85-098, 52 FR
19728, May 27, 1987]
Sec. 183.534 Fuel filters and strainers.
If tested under Sec. 183.590, each fuel filter and strainer, as
installed in the boat, must not leak more than five ounces of fuel in
2\1/2\ minutes inclusive of leaks from the fuel pump and fuel line.
[CGD 77-98, 42 FR 36253, July 14, 1977]
Sec. 183.536 Seals and gaskets in fuel filters and strainers.
(a) [Reserved]
(b) Each gasket and each sealed joint in a fuel filter and strainer
must not leak when subjected for 24 hours to a gasoline that has at
least a 50 percent aromatic content at the test pressure marked on the
fuel tank label.
[CGD 81-092, 48 FR 55737, Dec. 15, 1983]
Sec. 183.538 Metallic fuel line materials.
Each metallic fuel line connecting the fuel tank with the fuel inlet
connection on the engine must:
(a) Be made of seamless annealed copper, nickel copper, or copper-
nickel; and
(b) Except for corrugated flexible fuel line, have a minimum wall
thickness of 0.029 inches.
Sec. 183.540 Hoses: Standards and markings.
(a) ``USCG Type A1'' hose means hose that meets the performance
requirements of:
(1) SAE Standard J1527DEC85, Class 1 and the fire test in Sec.
183.590; or
(2) Underwriters' Laboratories, Inc. (UL) Standard 1114.
(b) ``USCG Type A2'' hose means hose that meets the performance
requirements of SAE Standard J1527DEC85, Class 2 and the fire test in
Sec. 183.590;
(c) ``USCG Type B1'' hose means hose that meets the performance
requirements of SAE Standard J1527DEC85, Class 1.
(d) ``USCG Type B2'' hose means hose that meets the performance
requirements of SAE Standard J1527DEC85, Class 2.
Note: SAE Class 1 hose has a permeation rating of 100 grams or less
fuel loss per square meter of interior surface in 24 hours.
SAE Class 2 hose has a permeation rating of 300 grams or less fuel
loss per square meter of interior surface in 24 hours.
(e) Each ``USCG Type A1,'' ``USCG Type A2,'' ``USCG Type B1,'' and
``USCG Type B2'' hose must be identified by the manufacturer by a
marking on the hose.
(f) Each marking must contain the following information in English:
(1) The statement ``USCG TYPE (insert A1 or A2 or B1 or B2).''
(2) The year in which the hose was manufactured.
(3) The manufacturer's name or registered trademark.
(g) Each character must be block capital letters and numerals that
are at least one eighth-inch high.
(h) Each marking must be permanent, legible, and on the outside of
the hose at intervals of 12 inches or less.
[CGD 85-098, 52 FR 19728, May 27, 1987]
Sec. 183.542 Fuel systems.
(a) Each fuel system in a boat must have been tested by the boat
manufacturer and not leak when subjected to the greater of the following
pressures:
(1) Three pounds per square inch; or
(2) One and one-half times the pressure created in the lowest part
of the fuel system when it is filled to the level of overflow with fuel.
(b) The test pressure shall be obtained with air or inert gas.
[CGD 81-092, 48 FR 55737, Dec. 15, 1983]
[[Page 890]]
Manufacturer Requirements
Sec. 183.550 Fuel tanks: Installation.
(a) Each fuel tank must not be integral with any boat structure or
mounted on an engine.
(b) Each fuel tank must not move at the mounting surface more than
onefourth inch in any direction.
(c) Each fuel tank must not support a deck, bulkhead, or other
structural component.
(d) Water must drain from the top surface of each metallic fuel tank
when the boat is in its static floating position.
(e) Each fuel tank support, chock, or strap that is not integral
with a metallic fuel tank must be insulated from the tank surface by a
nonmoisture absorbing material.
(f) Cellular plastic must not be the sole support for a metallic
fuel tank.
(g) If cellular plastic is the sole support of a non-metallic fuel
tank, the cellular plastic must meet the requirements of Sec. 183.516
(b) or (c).
(h) Each fuel tank labeled under Sec. 183.514(b)(8) for
installation aft of the boat's half length must be installed with its
center of gravity aft of the boat's half length.
[CGD 74-209, 42 FR 5950, Jan. 31, 1977, as amended by CGD 81-092, 48 FR
55737, Dec. 15, 1983; USCG-1999-5832, 64 FR 34716, June 29, 1999]
Sec. 183.552 Plastic encased fuel tanks: Installation.
(a) Each fuel tank encased in cellular plastic foam or in fiber
reinforced plastic must have the connections, fittings, and labels
accessible for inspection and maintenance.
(b) If a metallic fuel tank is encased in cellular plastic or in
fiber reinforced plastic, water must not collect between the plastic and
the surface of the tank or be held against the tank by capillary action.
(c) If the plastic is bonded to the surface of a metallic fuel tank,
the adhesive strength of the metal to the plastic bond must exceed the
cohesive strength of the plastic.
Sec. 183.554 Fittings, joints, and connections.
Each fuel system fitting, joint, and connection must be arranged so
that it can be reached for inspection, removal, or maintenance without
removal of permanent boat structure.
Sec. 183.556 Plugs and fittings.
(a) A fuel system must not have a fitting for draining fuel.
(b) A plug used to service the fuel filter or strainer must have a
tapered pipethread or be a screw type fitted with a locking device other
than a split lock washer.
Sec. 183.558 Hoses and connections.
(a) Each hose used between the fuel pump and the carburetor must be
``USCG Type A1'' hose.
(b) Each hose used--
(1) For a vent line or fill line must be:
(i) ``USCG Type A1'' or ``USCG Type A2''; or
(ii) ``USCG Type B1'' or ``USCG Type B2'' if no more than five
ounces of fuel is discharged in 2\1/2\ minutes when:
(A) The hose is severed at the point where maximum drainage of fuel
would occur,
(B) The boat is in its static floating position, and
(C) The fuel system is filled to the capacity market on the tank
label under Sec. 183.514(b)(3).
(2) From the fuel tank to the fuel inlet connection on the engine
must be:
(i) ``USCG Type A1''; or
(ii) ``USCG Type B1'' if no more than five ounces of fuel is
discharged in 2\1/2\ minutes when:
(A) The hose is severed at the point where maximum drainage of fuel
would occur,
(B) The boat is in its static floating position, and
(C) The fuel system is filled to the capacity marked on the tank
label under Sec. 183.514(b)(3).
(c) Each hose must be secured by:
(1) A swaged sleeve;
(2) A sleeve and threaded insert; or
(3) A hose clamp.
(d) The inside diameter of a hose must not exceed the actual minor
outside diameter of the connecting spud,
[[Page 891]]
pipe, or fitting by more than the distance shown in Table 8.
Table 8
If minor outside diameter of the The inside diameter of the
connecting spud, pipe, or fitting is-- hose must not exceed the
minor outside diameter of
the connecting spud, pipe,
or hose fitting by more
than the following
distance:
Less than \3/8\ in........................ 0.020 in.
\3/8\ in. to 1 in......................... 0.035 in.
Greater than 1 in......................... 0.065 in.
[CGD 74-209, 42 FR 5950, Jan. 31, 1977, as amended by CGD 85-098, 52 FR
19728, May 27, 1987]
Sec. 183.560 Hose clamps: Installation.
Each hose clamp on a hose from the fuel tank to the fuel inlet
connection on the engine, a hose between the fuel pump and the
carburetor, or a vent line must:
(a) Be used with hose designed for clamps;
(b) [Reserved]
(c) Be beyond the bead, flare, or over the serrations of the mating
spud, pipe, or hose fitting; and
(d) Not depend solely on the spring tension of the clamp for
compressive force.
[CGD 74-209, 42 FR 5950, Jan. 31, 1977, as amended by CGD 81-092, 48 FR
55737, Dec. 15, 1983]
Sec. 183.562 Metallic fuel lines.
(a) Each metallic fuel line that is mounted to the boat structure
must be connected to the engine by a flexible fuel line.
(b) Each metallic fuel line must be attached to the boat's structure
within four inches of its connection to a flexible fuel line.
Sec. 183.564 Fuel tank fill system.
(a) Each fuel fill opening must be located so that a gasoline
overflow of up to five gallons per minute for at least five seconds will
not enter the boat when the boat is in its static floating position.
(b) Each hose in the tank fill system must be secured to a pipe,
spud, or hose fitting by:
(1) A swaged sleeve;
(2) A sleeve and threaded insert; or
(3) Two adjacent metallic hose clamps that do not depend solely on
the spring tension of the clamps for compressive force.
(c) Each hose clamp in the tank fill system must be used with a hose
designed for clamps.
(d) Hose clamps used in the tank fill system must:
(1) Have a minimum nominal band width of at least one-half inch; and
(2) Be over the hose and the spud, pipe, or hose fitting.
[CGD 74-209, 42 FR 5950, Jan. 31, 1977, as amended by CGD 81-092, 48 FR
55737, Dec. 15, 1983]
Sec. 183.566 Fuel pumps: Placement.
Each fuel pump must be on the engine it serves or within 12 inches
of the engine, unless it is a fuel pump used to transfer fuel between
tanks.
Sec. 183.568 Anti-siphon protection.
Each fuel line from the fuel tank to the fuel inlet connection on
the carburetor must:
(a) Be above the level of the tank top; or
(b) Have an anti-siphon device or an electrically operated fuel stop
valve:
(1) At the tank withdrawal fitting; or
(2) Installed so the line from the fuel tank is above the top of the
tank; or
(c) Provided that the fuel tank top is below the level of the
carburetor inlet, be metallic fuel lines meeting the construction
requirements of Sec. 183.538 or ``USCG Type A1'' hose, with one or two
manual shutoff valves installed as follows:
(1) Directly at the fuel tank connection arranged to be readily
accessible for operation from outside of the compartment, and
(2) If the length of fuel line from the tank outlet to the engine
inlet is greater than 12 feet, a manual shutoff valve shall be installed
at the fuel inlet connection to the engine.
[CGD 74-209, 42 FR 5950, Jan. 31, 1977, as amended by CGD 81-092, 48 FR
55737, Dec. 15, 1983; CGD 85-098, 52 FR 19729, May 27, 1987]
Sec. 183.570 Fuel filters and strainers: Installation.
Each fuel filter and strainer must be supported on the engine or
boat structure independent from its fuel line connections, unless the
fuel filter or strainer is inside a fuel tank.
[[Page 892]]
Sec. 183.572 Grounding.
Each metallic component of the fuel fill system and fuel tank which
is in contact with fuel must be statically grounded so that the
resistance between the ground and each metallic component of the fuel
fill system and fuel tank is less than 100 ohms.
Tests
Sec. 183.580 Static pressure test for fuel tanks.
A fuel tank is tested by performing the following procedures in the
following order:
(a) Fill the tank with air or inert gas to the pressure marked on
the tank label under Sec. 183.514(b)(5).
(b) Examine each tank fitting and seam for leaks using a leak
detection method other than the pressure drop method.
[CGD 74-209, 42 FR 5950, Jan. 31, 1977, as amended by CGD 81-092, 48 FR
55737, Dec. 15, 1983]
Sec. 183.584 Shock test.
A fuel tank is tested by performing the following procedures in the
following order:
(a) Perform the static pressure test under Sec. 183.580.
(b) If the tank is non-metallic, fill it to capacity with a gasoline
that has at least a 50 percent aromatic content. Keep the fuel in the
tank at 21 [deg]C or higher for 30 days prior to testing.
(c) Mount the tank to the platform of an impact test machine.
(d) Fill the tank to capacity with water.
(e) Apply one of the following accelerations within three inches of
the center of the horizontal mounting surface of the tank. The duration
of each vertical acceleration pulse is measured at the base of the shock
envelope.
(1) If the tank is not labeled under Sec. 183.514(b)(8) for
installation aft of the half length of the boat, apply 1000 cycles of
25g vertical accelerations at a rate of 80 cycles or less per minute.
The duration of the acceleration pulse must be between 6 and 14
milliseconds.
(2) If the tank is manufactured for installation with its center of
gravity aft of the half length of the boat, apply 1000 cycles of 15g
vertical accelerations at a rate of 80 cycles or less per minute. The
duration of the shock pulse must be between 6 and 14 milliseconds.
(f) Perform the static pressure test under Sec. 183.580.
[CGD 74-209, 42 FR 5950, Jan. 31, 1977, as amended by USCG-1999-5832, 64
FR 34716, June 29, 1999]
Sec. 183.586 Pressure impulse test.
A fuel tank is tested by performing the following procedures in the
following order:
(a) Perform the static pressure test under Sec. 183.580.
(b) If the tank is non-metallic, fill it to capacity with a gasoline
that has at least a 50 percent aromatic content. Keep the fuel in the
tank at 21 [deg]C or higher for 30 days prior to testing.
(c) Mount the tank on a test platform.
(d) Fill the tank to capacity with water.
(e) Cap and seal each opening in the tank.
(f) Apply 25,000 cycles of pressure impulse at the rate of no more
than 15 impulses per minute varying from zero to three PSIG to zero
inside the tank top from a regulated source of air, inert gas, or water.
(g) Perform the static pressure test under Sec. 183.580.
Sec. 183.588 Slosh test.
A fuel tank is tested by performing the following procedures in the
following order:
(a) Perform the static pressure test under Sec. 183.580.
(b) Perform the pressure impulse test under Sec. 183.586.
(c) Secure the tank to the platform of a tank rocker assembly.
(d) Fill the tank to one-half capacity with water.
(e) Cap and seal each opening in the tank.
(f) Apply 500,000 cycles or rocking motion 15 degrees to each side
of the tank centerline at the rate of 15 to 20 cycles a minute. The axis
of rotation of the rocker and fuel tank must be perpendicular to the
centerline of the tank length at a level six inches or less above or
below the tank's bottom.
[[Page 893]]
(g) Perform the static pressure test under Sec. 183.580.
[CGD 74-209, 42 FR 5950, Jan. 31, 1977, as amended by USCG-1999-5832, 64
FR 34716, June 29, 1999]
Sec. 183.590 Fire test.
(a) A piece of equipment is tested under the following conditions
and procedures:
(1) Fuel stop valves, ``USCG Type A1'' or USCG Type A2'' hoses and
hose clamps are tested in a fire chamber.
(2) Fuel filters, strainers, and pumps are tested in a fire chamber
or as installed on the engine in the boat.
(3) Fuel tanks must be tested filled with fuel to one-fourth the
capacity marked on the tank in a fire chamber or in an actual or
simulated hull section.
(b) Each fire test is conducted with free burning heptane and the
component must be subjected to a flame for 2\1/2\ minutes.
(c) If the component is tested in a fire chamber:
(1) The temperature within one inch of the component must be at
least 648 [deg]C sometime during the 2\1/2\ minute test;
(2) The surface of the heptane must be 8 to 10 inches below the
component being tested; and
(3) The heptane must be in a container that is large enough to
permit the perimeter of the top surface of the heptane to extend beyond
the vertical projection of the perimeter of the component being tested.
(d) If the component is being tested as installed on an engine,
heptane sufficient to burn 2\1/2\ minutes must be poured over the
component and allowed to run into a flat bottomed pan under the engine.
The pan must be large enough to permit the perimeter of the top surface
of the heptane to extend beyond the vertical projection of the perimeter
of the engine.
(e) If a fuel tank is being tested in an actual or simulated hull
section, the actual or simulated hull section must be of sufficient size
to contain enough heptane to burn for 2\1/2\ minutes in a place adjacent
to the tank.
[CGD 74-209, 42 FR 5950, Jan. 31, 1977, as amended by CGD 77-98, 42 FR
36253, July 14, 1977; CGD 85-098, 52 FR 19729, May 27, 1987]
Subpart K_Ventilation
Source: CGD 76-082, 44 FR 73027, Dec. 17, 1979, unless otherwise
noted.
Sec. 183.601 Applicability.
This subpart applies to all boats that have gasoline engines for
electrical generation, mechanical power, or propulsion.
[USCG-1999-5832, 64 FR 34716, June 29, 1999]
Sec. 183.605 Definitions.
As used in this subpart:
``Fuel'' means gasoline.
``Open to the atmosphere'' means a compartment that has at least 15
square inches of open area directly exposed to the atmosphere for each
cubic foot of net compartment volume.
[CGD 76-082, 44 FR 73027, Dec. 17, 1979, as amended by CGD 85-098, 52 FR
19729, May 27, 1987]
Sec. 183.607 Incorporation by reference.
(a) The following standards are incorporated by reference. Copies
may be obtained from the sources indicated. They are also available for
inspection at Coast Guard Headquarters, 2100 Second Street, SW.,
Washington, DC 20593-0001 and at the National Archives and Records
Administration (NARA). For information on the availability of this
material at NARA, call 202-741-6030, or go to: http://www.archives.gov/
federal--register/code--of--federal--regulations/ibr--locations.html.
(1) AMCA Standard 210-74, Figure 12. Air Moving and Conditioning
Association, 30 West University Drive, Arlington Heights, Illinois
60004.
(2) ASTM Standard D 471. American Society for Testing and Materials,
100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.
(3) UL Standard 1128, Underwriters Laboratories, Incorporated, 12
Laboratory Drive, Research Triangle Park, NC 27709-3995.
(b) The Director of the Federal Register approved the incorporation
by reference in paragraph (a)(2) on September 26, 1976 and the
incorporations
[[Page 894]]
in paragraphs (a) (1) and (3) on March 24, 1978.
[CGD 76-082, 44 FR 73027, Dec. 17, 1979, as amended by CGD 82-010, 48 FR
8273, Feb. 28, 1983; USCG-2000-7223, 65 FR 40059, June 29, 2000; 69 FR
18803, Apr. 9, 2004]
Sec. 183.610 Powered ventilation system.
(a) Each compartment in a boat that has a permanently installed
gasoline engine with a cranking motor must:
(1) Be open to the atmosphere, or
(2) Be ventilated by an exhaust blower system.
(b) Each exhaust blower or combination of blowers must be rated at
an air flow capacity not less than that computed by the formulas given
in Table 183.610, Column 2. Blower rating must be determined according
to AMCA Standard 210-74, Figure 12, or UL Standard 1128.
Table 183.610
------------------------------------------------------------------------
Col. 1 \1\ Col. 2 \2\ Col. 3 \3\
------------------------------------------------------------------------
Below 34........................ Fr=50............. Fo=20
34 to 100....................... Fr=1.5V........... Fo=0.6V
Over 100........................ Fr=V/2+100........ Fo=0.2V+40
------------------------------------------------------------------------
\1\ Net compartment volume of engine compartment and compartments open
thereto (V) cubic feet.
\2\ Rated blower capacity (Fr) cubic feet per minute.
\3\ Blower system output (Fo) cubic feet per minute.
(c) Each exhaust blower system required by paragraph (a)(2) of this
section must exhaust air from the boat at a rate which meets the
requirements of Table 183.610, Column 3 when the engine is not
operating.
(d) Each intake duct for an exhaust blower must be in the lower one-
third of the compartment and above the normal level of accumulated bilge
water.
(e) More than one exhaust blower may be used in combination to meet
the requirements of this section.
(f) Each boat that is required to have an exhaust blower must have a
label that:
(1) Is located as close as practicable to each ignition switch;
(2) Is in plain view of the operator; and
(3) Has at least the following information:
WARNING--GASOLINE VAPORS CAN EXPLODE. BEFORE STARTING ENGINE OPERATE
BLOWER FOR 4 MINUTES AND CHECK ENGINE COMPARTMENT BILGE FOR GASOLINE
VAPORS.
Sec. 183.620 Natural ventilation system.
(a) Except for compartments open to the atmosphere, a natural
ventilation system that meets the requirements of Sec. 183.630 must be
provided for each compartment in a boat that:
(1) Contains a permanently installed gasoline engine;
(2) Has openings between it and a compartment that requires
ventilation, where the aggregate area of those openings exceeds 2
percent of the area between the compartments, except as provided in
paragraph (c) of this section;
(3) Contains a permanently installed fuel tank and an electrical
component that is not ignition protected in accordance with Sec.
183.410(a);
(4) Contains a fuel tank that vents into that compartment; or
(5) Contains a non-metallic fuel tank:
(i) With an aggregate permeability rate exceeding 1.2 grams of fuel
loss in 24 hours per cubic foot of net compartment volume, or
(ii) If the net compartment volume is less than one cubic foot,
having a permeability rate exceeding 1.2 grams of fuel loss in 24 hours.
Note: Reference fuel ``C'' at 40 degrees Celsius plus or minus 2
degrees Celsius from ASTM standard D 471 (incorporated by reference, see
Sec. 183.5) is to be used in determining the permeability rate.
(b) Each supply opening required in Sec. 183.630 must be located on
the exterior surface of the boat.
(c) An accommodation compartment above a compartment requiring
ventilation that is separated from the compartment requiring ventilation
by a deck or other structure is excepted from paragraph (a)(2) of this
section.
[CGD 76-082, 44 FR 73027, Dec. 17, 1979, as amended by CGD 76-082(a), 46
FR 27645, May 21, 1981; CGD 85-059, 51 FR 37577, Oct. 23, 1986; USCG-
1999-5832, 64 FR 34716, June 29, 1999; USCG-1999-5151, 64 FR 67176, Dec.
1, 1999]
Sec. 183.630 Standards for natural ventilation.
(a) For the purpose of Sec. 183.620, ``natural ventilation'' means
an airflow in a compartment in a boat achieved by having:
[[Page 895]]
(1) A supply opening or duct from the atmosphere or from a
ventilated compartment or from a compartment that is open to the
atmosphere; and
(2) An exhaust opening into another ventilated compartment or an
exhaust duct to the atmosphere.
(b) Each exhaust opening or exhaust duct must originate in the lower
third of the compartment.
(c) Each supply opening or supply duct and each exhaust opening or
exhaust duct in a compartment must be above the normal accumulation of
bilge water.
(d) Except as provided in paragraph (e) of this section, supply
openings or supply ducts and exhaust openings or exhaust ducts must each
have a minimum aggregate internal cross-sectional area calculated as
follows:
A=5 ln (V/5);
where:
(1) A is the minimum aggregate internal cross-sectional area of the
openings or ducts in square inches;
(2) V is the net compartment volume in cubic feet, including the net
volume of other compartments connected by openings that exceed 2 percent
of the area between the compartments; and
(3) ln (V/5) is the natural logarithm of the quantity (V/5).
(e) The minimum internal cross-sectional area of each supply opening
or duct and exhaust opening or duct must exceed 3.0 square inches.
(f) The minimum internal cross-sectional area of terminal fittings
for flexible ventilation ducts installed to meet the requirements of
paragraph (d) of this section must not be less than 80 percent of the
required internal cross-sectional area of the flexible ventilation duct.
[CGD 76-082, 44 FR 73027, Dec. 17, 1979; 45 FR 7544, Feb. 4, 1980]
Subpart L_Start-in-Gear Protection
Source: CGD 79-137, 46 FR 3515, Jan. 15, 1981, unless otherwise
noted.
Sec. 183.701 Applicability.
This subpart applies to outboard motors and starting controls, and
to manufacturers, distributors or dealers installing such equipment.
[USCG-1999-5832, 64 FR 34716, June 29, 1999]
Sec. 183.705 Definitions.
For the purposes of this subpart:
(a) Outboard motor means a self-contained propulsion system of any
horsepower rating designed to be installed on, and removable from the
transom of a boat.
(b) Static thrust means the forward or backward thrust developed by
an outboard motor and associated propulsion unit while stationary.
(c) Starting control means the motor throttle, shift and starting
control mechanisms located at a position remote from the outboard motor.
(d) Local starting means operating a mechanical or electrical
starting device built into the outboard motor.
(e) Distributor means any person engaged in the sale and
distribution of boats or associated equipment for the purpose of resale.
(f) Dealer means any person who is engaged in the sale and
distribution of boats or associated equipment to purchasers who the
seller in good faith believes to be purchasing any such boat or
associated equipment for purposes other than resale.
Sec. 183.710 Start-in-gear protection required.
(a) Any outboard motor which is capable of developing a static
thrust of 115 pounds or more at any motor operating speed with any
propeller or jet attachment recommended for or shipped with the motor by
the manufacturer, must be equipped with a device to prevent the motor
being started when controls are set so as to attain that thrust level,
as follows:
(1) Outboard motors designed for local starting must have a built-in
start-in-gear protection device.
(2) Outboard motors designed for remote starting must have either a
built-in start-in-gear protection device or be installed with remote
starting controls containing this device. An outboard motor designed for
remote starting that does not have a built-in start-in-gear protection
device must, at the time of sale, have a tag or label attached at the
location of the control
[[Page 896]]
connection, containing the following information: ``Starting controls
installed with this motor must comply with USCG requirements for start-
in-gear protection in 33 CFR Part 183, Subpart L.'' The letters and
numbers on the tag or label must be at least \1/8\ inch high.
(b) Starting controls must have a tag or label with the following
information to indicate whether or not they have been equipped with a
start-in-gear protection device: ``This control will (or will not)
provide start-in-gear protection meeting USCG requirements of 33 CFR
Part 183, Subpart L.'' The letters and numbers on the tag or label must
be at least \1/8\ inch high.
(c) Any manufacturer, distributor or dealer installing an outboard
motor displaying the label described in paragraph (a)(2) of this section
must properly match it with a compatible starting control that contains
a start-in-gear protection device.
Sec. 183.715 Exception.
Outboard motors designed to be equipped for remote starting, but
which also have a provision for local starting in emergencies, need not
comply with Sec. 183.710 for their local starting system. However, the
following information must be displayed on the motor: ``Warning--Ensure
shift control is in neutral before starting motor''. This information
must be clearly visible to a person using the emergency starting device.
Subpart M_Navigation Lights
Source: USCG-1999-6580, 66 FR 55091, Nov. 1, 2001, unless otherwise
noted.
Sec. 183.801 Applicability.
This subpart applies to recreational vessel manufacturers,
distributors, and dealers installing such equipment in new recreational
vessels constructed after November 1, 2002.
Sec. 183.803 Definitions.
As used in this subpart:
Dealer means any person who is engaged in the sale and distribution
of recreational vessels to purchasers who the seller in good faith
believes to be purchasing any such recreational vessel for purposes
other than resale.
Distributor means any person engaged in the sale and distribution of
recreational vessels for the purpose of resale.
Manufacturer means any person engaged in:
(1) The manufacture, construction, or assembly of recreational
vessels, or
(2) The importation of recreational vessels into the United States
for subsequent sale.
Navigation lights are those lights prescribed by the Navigation
Rules (Commandant Instruction 16672.2 series) to indicate a vessel's
presence, type, operation, and relative heading.
Sec. 183.810 Navigation light certification requirements.
(a) Except as provided by paragraph (b) of this section, each
navigation light must--
(1) Meet the technical standards of the applicable Navigation Rules;
(2) Be certified by a laboratory listed by the Coast Guard to the
standards of ABYC A-16 (incorporated by reference, see Sec. 183.5) or
equivalent, although portable battery-powered lights need only meet the
requirements of the standard applicable to them; and
(3) Bear a permanent and indelible label that is visible without
removing or disassembling the light and that states the following:
(i) ``USCG Approval 33 CFR 183.810.''
(ii) ``MEETS------.'' (Insert the identification name or number of
the standard under paragraph (a)(2) of this section, to which the
laboratory type-tested.)
(iii) ``TESTED BY------.'' (Insert the name or registered
certification-mark of the laboratory listed by the Coast Guard that
tested the fixture to the standard under paragraph (a)(2) of this
section.)
(iv) Name of manufacturer.
(v) Number of model.
(vi) Visibility of the light in nautical miles.
(vii) Date on which the light was type-tested.
(viii) Identification and specifications of the bulb used in the
compliance test.
[[Page 897]]
(b) If a light is too small to attach the required label--
(1) Place the information from the label in or on the package that
contains the light; and
(2) Mark each light ``USCG'' followed by the certified range of
visibility in nautical miles (nm), for example, ``USCG 2nm''. Once
installed, this mark must be visible without removing the light.
Subpart N [Reserved]
PARTS 184-186 [RESERVED]