Each self-propelled ocean, Great Lakes, or coastwise vessel must have a manually-operated engineers' assistance-needed alarm that is:
(1)
The engine control room, if the vessel has an engine control room; or
(2)
The maneuvering platform, if the vessel has no engine control room;
(b)
Audible in the engineers' accommodation spaces; and
(c)
Powered from the general alarm power source.