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 TB 55-1900-231-15
APPENDIX C
DYNAMIC DEHUMIDIFICATION INSTRUCTIONS
FOR LANDING CRAFT, MECHANIZED, 74 FOOT
DESIGN LCM-8, MOD. 1 (ROHR BUILT)
NSN 1905-00-4935-6057
I.
GENERAL: These instructions provide details required for preparation and installation of dynamic
dehumidification for the mechanized landing craft. Man-hours and materials required to perform the
functions herein are specified in the attached listing. The Watercraft has approximately 4,000 cubic feet of
area to be dehumidified.
II. PREPARATION:
A. A herculite cover secured with nylon drawstring shall be installed over the pilothouse searchlight.
Stencil cover with purpose and location.
B. Unbolt and remove the manhole on the stbd. side of the pilothouse control panel. Tag and bag bolts
and attach with new gasket to manhole cover.
C. Close, dog, and secure the following:
1.
Pilothouse windows.
2.
Engineroom access hatch.
3.
Lazarette access hatch.
4.
Ramp winch access door.
5.
All void covers.
D. Using pressure sensitive tape, glue and strip coat, seal the following:
1.
Fresh water expansion tank deck fill plugs (2 each).
2.
Fuel oil tank deck fill plugs (2 each).
3.
Pilothouse limber (drain) holes.
4.
Port rudder tiller deck plate.
5.
Pilothouse battle ports.
E. Using pressure sensitive tape, lue, strip coat and wooden blanks, seal the following: (See Chapter III,
g
Section 4, paragraph F.)
1. Engineroom natural ventilator cowls (4 each). (These are best sealed from inside the engineroom).
2. Access to the old static inverter cabinet from the pilothouse.
3. Stbd. pilothouse access.
F. The fuel oil tank vent and the dirty oil tank vent shall be left open. Inspect exterior electrical cable
stuffing tubes and pack with duct seal as required. Ensure that exterior electrical receptacle caps are installed.
G. The lazarette bilge drain valve (in the engineroom at the after bulkhead) shall be locked or wired open.
H. The main mast shall be stowed in its lowest position and left in place.
I.
Seal any other pilothouse openings found with pressure sensitive tape and glue.
C-1
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