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 TM 55-1905-221-14-1
SECTION II. EQUIPMENT DESCRIPTION AND DATA
1-7. EQUIPMENT CHARACTERISTICS, CAPABILITIES, AND FEATURES.
a. General. The LCM-8, MOD 1, Landing Craft is a welded steel, twin - screw type craft. It is used to transport
cargo, troops, and vehicles from ship-to-shore, shore-to-shore, or in retrograde movements. It may be utilized for
lighterage and utility work in harbors. It is intended for use in rough or exposed waters and is capable of operating
through breakers and grounding on a beach, remaining upright and tight, and retracting from the beach under its own
power. The craft is propelled by two twin-engine propulsion units, and is capable of a speed of nine knots when fully
equipped. The maintenance paragraphs of this manual contain detailed descriptions of the components of the LCMs.
b. Main Deck. The main deck is aft, with the pilothouse centrally located on the deck. The engine room hatch is
located in the deck forward from the pilothouse and the lazarette hatch is located in the deck aft from the pilothouse.
The deck contains a bolted cover plate over each engine to facilitate engine removal and installation.
c. Cargo Well and Ramp. The cargo well is forward. Dimensions are 42 ft. long and 15 ft. wide. The ramp is
lowered and raised by a winch located forward in the hull. The winch is powered by a hydraulic motor and is normally
controlled from the pilothouse.
d. Engine Room. The engine room is below the main deck between the cargo well and the lazarette. Hydraulic
system tanks are located in the engine room. Craft manufactured by the Marinette Marine Corporation also have a
steering system expansion tank in the pilothouse. Bilge pumps, bilge system valves, and oil/water separator are located
in the engine room.
e. Lazarette. The lazarette is aft below the main deck. It contains the two diesel fuel tanks, fuel shutoff and
steering cylinders, steering linkage, and ball valves and counterbalance valves. Space for ammunition stowage is
provided in the lazarette.
f. Starting and Control Systems. Two starting systems are provided for the diesel engines. Each outboard engine
has an electric starter and each inboard engine has a hydraulic starter. If either starting system should fail, the other
systems can be used to start both engines. Separate hydraulic systems are provided for steering and for the ramp hoist.
g. Pilothouse. The pilothouse is topped by a detachable canopy. A searchlight is located on the canopy roof. Front
and side windows open to provide ventilation. Windshield wipers are mounted on the front windshield.
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