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 TM 5-1940-277-20
TM 1940-20/2
1-8. LOCATION AND DESCRIPTION OF MAJOR COMPONENTS.
a.
Removable Cab (1). An aluminum frame with windows and aluminum roof that can be attached to the boat to
provide protection for the crew during bad weather: The cab is provided with windshield wiper and a place for
attaching searchlight.
b.
Control Console (2). Contains all the controls and indicators required for operation of the boat. In addition, it
contains a hand operated bilge pump, a stowage compartment for technical manuals, and a stowage compart-
ment for life preservers and other gear.
c.
Batteries (3). Provide electrical power for the operation of the boat.
d.
Removable Mast (4). Contains the navigation lights, towing lights, and anchor lights. May be lowered to rest on
capstan or removed from the boat when lights are not required.
e.
Hydrojets (5). Consist of diesel engine driven hydrojet propulsion units with directional nozzles and scoops. The
propulsion units propel the boat and steer it.
f.
Capstan (6). A two-speed hand-operated winching device used for towing, winching, and other work tasks.
Davit Tube (7) (MK1 only). Allows the attachment of a davit (small crane) to the boat for use in diving operations.
g.
Not used in U.S. Army operations.
h.
Beaching Legs (8). Support the boat in an upright position when on a hard surface and not in cradle. The
beaching legs are retractable.
i.
Engines (9). Provide power for driving hydrojet units.
Fuel Tank (10). Provides fuel storage capacity for operation of boat.
j.
k.
Pushknees (11). Provides the front of the boat with a flat vertical surface for pushing barges or maneuvering
bridge components. The pushknees can be removed.
CAUTION
Do not beach boat on rock shores. Damage to keel and keel cooler may result.
l.
Keel Coolers (12) (MK2 only). Provide cooling for the engine, transmission, oil, and turbocharged air. Located
on the bottom of the boat.
1-3
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