Section 28.850 - Main source of electrical power(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: (1) The propulsion system and its necessary auxiliaries and controls;(4) Communication systems;(5) Navigation equipment and navigation lights;(6) Fire protection or detection equipment;(8) General alarm system.(b) Each generator must be attached to an independent prime mover.