BILGE PUMPS, PIPING, & DEWATERING
APPLIES TO:
ALL DOCUMENTED COMMERCIAL FISHING VESSELS OPERATING
BEYOND THE BOUNDARY LINE OR WITH MORE THAN 16 POB ANYWHERE
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REQUIREMENTS:
-Bilge pumps and bilge piping capable of draining any
watertight compartment (except tanks and small buoyancy
compartments.)
-Engine rooms and other large spaces must be fitted wlth more than
one suction line. This means either two pumps or suction lines to
manifold.
-Spaces used in the sorting or processing of fish must be
fitted with a dewatering system capable of dewatering the
space at the same rate as water is introduced.
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STANDARD:
(Pumps used as part of processing the fish do not count for meeting
this requirement.) Processor sump does not count as a bilge pump.
(The dewatering pump must be interlocked with the pump supplying
the water so that if the dewatering pump fails, the water supply
pump will be deactivated.)
-If a bilge pump required by this section is portable, it must be
provided with a suitable suction hose of adequate length to reach
the bilges of each watertight compartment it must serve and with
a discharge hose of adequate length to ensure overboard discharge.
A portable pump must be capab1e of dewatering each space it serves
at a rate of at least 2 inches (51 nillimeters) of water depth per
minute.
-Except for a required fire pump a bilge pump may be used for other
purposes.
-Except where an individual pump is provided for a separate space or
for a portable pump, each individual bilge suction line must be led
to a manifold. Each bilge suction line must be provided with a
stop valve at the manifold and a check valve at some accessible
-Each bilge suction line and dewatering system must be fitted with a
suitable strainer to prevent clogging of the suction line.
Strainers must have an open area of not less than three times the
open area of the suction line.
-Each vessel must comply with the oil pollution prevention
requirements of 33 CFR, Parts 130, 151 and 155. Also see pollution
sections on pages 30-43.
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INSTRUCTORS NOTES:
-Provite a visual aid showing flood rates for 1" hole at different
depths.
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REFERENCES: 46 CFR 28.255, 33 CFR Parts 130/151/155
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