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 TB 55-1900-231-15
F. Install the rubber sink stoppers in all five (5) washroom and stateroom sink drains. Shut both galley sink
drain valves.
G. Close, lock and/or dog the following exterior openings:
1.
Port and stbd. pilothouse doors.
2.
Stbd. outboard and port aft. ventilation room hatches.
3.
Port and stbd. stack access hatches.
4.
Fidley skylight.
5.
Stbd. crews' mess access hatch.
6.
Stbd. galley access hatch.
7.
Engineroom trunk escape hatch.
8.
Galley exhaust fan room hatch.
9.
Engineroom supply fan room hatch.
10.
Port passageway access hatch.
11.
Crews' quarters scuttle.
12.
Lazarette access hatch.
13.
Pilothouse windows.
14.
Main deckhouse portholes.
15.
All ventilation duct dampers.
Seal with pressure sensitive tape, glue and strip coat any other cracks or holes found.
H. The voice tube covers in the pilothouse, captain's stateroom, engineer's stateroom and engineroom will be
secured in the open position, except those connecting to the after steering station which will be properly
secured shut and taped as necessary.
I. Onflight 2 tugs, LT-2075 through LT-2096 inclusive, pack the steering cable openings on the main deck aft.
port and stbd. sides with duct seal.
J. Close all exterior main deck and boat deck service, fill, firefighting, and overboard discharge valves.
Ensure that caps are properly installed on all connections. Fire monitor nozzles will be pointed downward
to prevent the accumulation of water.
K. Inspect the flying bridge, top of ventilation room, and boat deck strainers and deck drains for accumulation
of dirt and debris. Clean as necessary to prevent standing water.
L. Check all electrical cable stuffing tubes that penetrate the dehumidified area for proper seals. Pack those
without proper seals with duct seal.
M. Shut ventilation mushroom ducts in officers' and crews' washrooms.
III. DYNAMIC DEHUMIDIFICATION :
A. The dehumidified area as shown in Figures A-1 and A-2 shall encompass the pilothouse, crews' quarters,
both staterooms, crews' mess and galley, fidley and engineroom, shaft alley, lazarette, and both
washrooms all in a single zone.
B. Dry air will be introduced into the pilothouse by way of a 4" PVC pipe coupling fitted in a wooden blank that
is equipped with a simple quick-acting dogging device or strongback securing device and 1/8" neoprene
rubber strips glued to the blank to provide a flexible seal between the wood and seating surface. Install the
blank over the port aft pilothouse window which will, of course, be secured open.
A-3
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