1 The special requirements for the machinery,
boiler and electrical installations shall be to the satisfaction of
the Administration and shall include at least the requirements of
this regulation.
2 The main source of electrical power shall comply
with the following:
2.1 Where the electrical power can normally be
supplied by one generator, suitable load-shedding arrangements shall
be provided to ensure the integrity of supplies to services required
for propulsion and steering as well as the safety of the ship. In
the case of loss of the generator in operation, adequate provision
shall be made for automatic starting and connecting to the main switchboard
of a stand-by generator of sufficient capacity to permit propulsion
and steering and to ensure the safety of the ship with automatic restarting
of the essential auxiliaries including, where necessary, sequential
operations. The Administration may dispense with this requirement
for a ship of less than 1,600 gross tonnage, if it is considered impracticable.
2.2 If the electrical power is normally supplied
by more than one generator simultaneously in parallel operation, provision
shall be made, for instance by load shedding, to ensure that, in case
of loss of one of these generating sets, the remaining ones are kept
in operation without overload to permit propulsion and steering, and
to ensure the safety of the ship.
3 Where stand-by machines are required for other
auxiliary machinery essential to propulsion, automatic change-over
devices shall be provided.
5 Means shall be provided to keep the starting
air pressure at the required level where internal combustion engines
are used for main propulsion.