Table 3-2. Damage Control Classifications (Continued)
SYSTEM OR
XRAY
YOKE
ZEBRA
WILLIAM
FITTING
Ventilation
Windlass and
Shaft alley, workshops,
Circle W for machinery
flammable material
living spaces,
spaces, catapult spaces,
spaces.
washrooms,
pump rooms, aviation
workspaces such as
fuel maintenance shop,
commissary, and utility
stowage battery shop,
spaces, issue rooms,
generator spaces. Vital
rain clothes, athletic
spaces if not air
gear, chart and
conditioned.
registered publication
Controllable fire
space; storerooms with
dampers.
heat piping. Circle
Zebra to galley and one
water closet forward
and aft.
Recirculating air
Same as ventilated
Steering gear, control
conditioning
spaces.
spaces, medical spaces,
squadron ready rooms,
aviation suit drying
rooms, and machinery
enclosed operating
station missile spaces.
Blow-out vent
Conventional
ammunition spaces and
storerooms. Circle
XRAY for shaft alley,
nuclear weapons, liquid
propellants and toxic
chemical agent spaces,
and magazine shops.
Replenishment air
Vital spaces and
Ready rooms.
Voice tubes and
All.
message passing
facilities
Miscellaneous AT and
All.
WT covers
officer's permission, be relaxed to pass battle rations
When material conditions of readiness are being
and to allow the crew to use the head facilities. The
set, the ship's first concern is the requirement for
opening of certain weather deck doors permits natural
watertight, airtight, fire-tight, and fume-tight integrity.
ventilation to replace the stuffiness at some GQ stations
Living conditions and access to spaces are secondary
with fresh air. Condition YOKE may also be modified in
requirements. During long periods at GQ stations,
a similar manner when appropriate.
however, condition ZEBRA may, with the commanding
3-18