Final authority for the performance within the confines of his district of the functions of the Coast Guard, which in general terms are maritime law enforcement, saving and protecting life and property, safeguarding navigation on the high seas and navigable waters of the United States, and readiness for military operations, is delegated to the District Commander by the Commandant. In turn delegations of final authority run from the District Commander to commanding officers of units under the District Commander for the performance of the functions of law enforcement, patrol of marine regattas and parades, and the saving of life and property which come within the scope of their activities.