46 C.F.R. § 28.355 Main source of electrical power.
Title 46 - Shipping
(a) Applicability. Each vessel that relies on electricity to power any of the following essential loads must have at least two electrical generators to supply these loads: (1) The propulsion system and its necessary auxiliaries and controls; (2) Interior lighting; (3) Steering systems; (4) Communication systems; (5) Navigation equipment and navigation lights; (6) Fire protection or detection equipment; (7) Bilge pumps; or (8) General alarm system. (b) Each generator must be attached to an independent prime mover.
Title 46: Shipping
PART 28—REQUIREMENTS FOR COMMERCIAL FISHING INDUSTRY VESSELS
Subpart D—Requirements for Vessels Which Have Their Keel Laid or Are at a Similar Stage of Construction on or After or Which Undergo a Major Conversion Completed on or After September 15, 1991, and That Operate With More Than 16 Individuals on Board
§ 28.355 Main source of electrical power.

