reduces arcing at the setup switch contacts. It also
prevents flashover of the generator commutator.
Overload on a generator is reduced by removing
Control Console Casualty
nonvital loads. ( N O T E : Power should not be
interrupted to vital machinery and circuits unless
A casualty to the pilothouse control console or
associated circuitry requires a shift in control of the
engines to the engine room station. Perform the
Vital machinery and circuits include the steering
following actions to shift control to the engine room:
gear, IC switchboard, fire pumps, drainage pumps, vital
auxiliaries in the fire and engine rooms, gun mounts, and
DIESEL ELECTRIC DC DRIVE (FLEET
Operational casualties that may occur to this type of
drive include casualties to any one of the four main
propulsion generators or exciters. It can also occur to
the main propulsion motors, control equipment, and
Propulsion Generator Casualty
Note that the control transfer switch and the
A casualty to one of the main propulsion generators
excitation control switch are interlocked so that the
or exciters requires cutting the affected generator out of
excitation control switch has to be in the OFF position
the series propulsion loop. It is not necessary to turn the
before the control transfer switch can be operated.
speed controller to the STOP position when cutting the
generator into or out of the propulsion circuit.
Normally, the controller should be brought to. a position
Shell or torpedo hits in engineering spaces usually
not higher than the 11th (engine operating at 350 rpm).
result in multiple casualties to machinery systems and
When it is required, a generator may be cut out of the
personnel. The corrective action for any particular
circuit while the engine speed is in excess of 350 rpm.
casualty depends on the location and extent of damage.
The generator setup switches are designed for such
While battle casualties differ in many respects, the
following procedures can be applied to most casualties
service. Wait several seconds between the opening of
of this type:
the generator's control switch and its setup switch. This