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 TB 55-1900-231-15
J. Ensure that all fill and overboard discharge valves are closed and their caps are installed.
K. It is recommended that the ramp be lowered just enough to prevent the accumulation of stanwin er,
g dat
dirt and debris between the ramp and the forward well deck area Remove the load binders and store in the
lazarette. Fabricate two (2) ramp holding devices, consisting of 5/8 inch wire rope, clamps and turn buckles
and install in way of load binder removal. Provide slack in the ramp winch cable to remove strain on the ramp
winch.
III. DYNAMIC DEHUMIDIFICATION:
A. The dehumidified zone as shown in Figures C-1 and C-2 shall encompass the pilothouse, the
engineroom, and the lazarette. Dry air will be introduced into the pilothouse by way of a 4" PVC pipe coupling
installed in a wooden blank that will be sealed with pressure sensitive tape and glue over the port pilothouse
access.
B. The dry air will flow to engineroom through the stbd.
control panel manhole and to the lazarette
through the locked open bilge drain valve.
C. Humid air will be removed from the zone by way of the stbd. rudder tiller deck plate. The deck plate
keeper chain will be detached and the deck plate tagged, bagged and secured to an adjacent stanchion. A
wooden blank fitted with a 4" PVC pipe coupling will be sealed with pressure sensitive tape, glue and strip coat
over the stbd. rudder tiller access hole.
D. One (1) sensing element and one (1) humidistat will be installed within three (3) feet of the lazarette
bilge drain valve in the engineroom. The humidistat will be set to maintain 40 percent (plus or minus 5 percent)
relative humidity.
E. The wooden blanks that are to be installed over the following openingallsbe equipped with a simple
s h
quick-acting dogging or strongback securing device. Strips of 1/8 inch neoprene rubber will be glued to the
blanks to provide a flexible seal between the wood and the steel surface. (Refer to Chapter III, Section 4,
paragraph F.)
1. Port and stbd. pilothouse accesses.
2. Old static inverter cabinet access from the pilothouse.
Any cracks found will be sealed with
pressure sensitive tape and glue.
F. Stencil the appropriate inlet and outlet wooden blank or adjacent scefa ith "DRY AIR" and "HUMID
ur w
AIR" respectively for the benefit of those who are to connect the D/H systems.
IV. MATERIAL REQUIREMENTS:The following listing contains an estimate of those materials required for
preservation.
*The estimated quantity reflects the requirements of ten (10) watercraft.
A. MATERIALS:
UNIT OF
EST.
NSN
NOMENCLATURE
ISSUE
QTY
Local Purchase
4" PVC Pipe Couplings
EA
20
Local Purchase
PVC Glue
PT
10
P-10, Type I, Grade 30,
CN
Preservative Oil
(5 Gal.)
15
C-2
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