Access to the oxygen-nitrogen rooms
ZEBRA. Ship personnel must have special authorization
to open these fittings. The black X identifying an XRAY
(compressor and producing)
classification should be on the following closures:
Access to the switch gear room, ammunition
Doors and hatches to storerooms and stowage
hoist, and elevators
spaces, including cargo ammunition spaces
Access to the underwater log room
Hatches that are provided with a scuttle and lead to
Access to the equipment rooms that are
magazines and handling rooms
unoccupied
Bolted-plate manhole covers
Scuttles for passing ammunition
Escape scuttles not covered elsewhere
YOKE Fittings
Doors and hatches located only on the weather
deck and below that are used to strike down stores
YOKE fittings are marked with a black Y and are
and ammunition
secured during conditions YOKE and ZEBRA. You
Access to an aircraft fueling station compartment
must have proper authorization to open fittings with
this classification when the ship is at condition
Access to escape trunks in machinery spaces
YOKE or ZEBRA.
Access to the arresting gear machinery room
YOKE closures and fittings marked with a black
Y are as follows:
Access to the eductor room
Hatches that are provided with a scuttle and
Access to the capstan and winch control room
lead to shaft alleys and pump rooms
Access to the chain locker
Alternate accesses to machinery rooms
Access to the stores elevator
Weather deck hatches not classified as XRAY
Access to the catapult machinery room
Some alternate accesses on the DC deck and
Access to forced draft blower rooms
above
Access to the windlass room
Access to fan rooms
Access to the generator rooms
CIRCLE XRAY fittings are marked with a black X
inside of a black circle. These modified closures are
Access to the air compressor room
secured during conditions XRAY, YOKE, and ZEBRA.
Access to the air-conditioning machinery
However, personnel may open these fittings without
special authorization when proceeding to battle stations
room
or as required in routine inspection checks. You may
Access to the refrigeration machinery room
o p e n t h e s e c l o s u r e s , bu t y o u m u s t s e c u r e t h e m
Access to the elevator machinery room
immediately after use.
Access to the missile director machinery room
CIRCLE XRAY closures and fittings are marked
with a black X inside of a black circle. These closures
Access to the drying room
and fittings are as follows:
CIRCLE YOKE fittings are marked with a black
Doors to magazines and handling rooms
Y inside of a black circle. These modified fittings are
Hatches that do not have a scuttle and lead to
secured during conditions YOKE and ZEBRA.
magazines and handling rooms
However, these fittings may also be opened without
special authorization when personnel are proceeding
Access to the missile handling and check-out area
to battle stations or as required in routine inspection
compartments
checks. Again, you must secure these closures
Scuttles in hatches to the shaft alley, pump rooms,
immediately after use.
magazines, and handling rooms
CIRCLE YOKE fittings and closures marked
Access to the gas and fuel station and filter rooms
with a black Y inside of a black circle are as follows:
3-14