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 TM 55-1905-222-14
1-8.2
Hull Structural Features. Refer to Foldout-1. The hull is an all steel welded structure. There are nine
watertight bulkheads at frames 3, 7, 11, 15, 19, 23, 27, 31 and 39. The compartments forward of frame 31 below the
cargo deck form seven sealed watertight buoyancy holds or voids. The cargo deck extends forward of frame 31 to the
bow ramp. The main deck extends from the bow aft along the sides of the cargo well to the full main deck over the
engine room and lazarette. The compartment below the main deck from frame 31 aft to frame 39 is the engine room.
The compartment aft of frame 39 to the transom is the lazarette. The pilothouse superstructure is located on the main
deck, centerline, at frame 35. Port and starboard skeg keels project from the underwater hull between frames 29 and 39.
Tunnels in the keels aft of frame 39 provide clearance for the propellers. V- shaped struts are welded to each skeg keel
and to the hull between frames 41 and 42. Seven zinc anodes are provided for underwater hull cathodic protection.
1-8.2.1 Main Deck. The main deck extends the entire length of the LCM-8. A full deck is provided from the transom
forward to frame 31. Between the bow and frame 31, the main deck forms port and starboard walkways along the sides
of the cargo well. Engine room cover plates with integral ventilators are bolted in the deck, port and starboard, between
frames 31 and 38. A lazarette cover plate is bolted in the deck, port of the centerline aft of frame 39. Six 15-inch
chocks are provided in pairs, port and starboard, on the bow, at frame 37, and on the transom. Six 12-inch mooring bitts
are provided in pairs, port and starboard, at frames 3, 29 and 43. Four lifting eyes are provided in pairs, port and
starboard, at frames 15 and 31.
a. Engine cooling system expansion tank fill deck plates are provided, port and starboard, in the deck aft of frame
31. Fuel tank sounding deck plates are provided, port and starboard, in the deck aft of frame 39. Port and starboard
deck plates are provided on the transom for installing the emergency steering tiller. A fuel fill connection and fuel tank
vent connection are located behind the pilothouse on the centerline at frame 39. Anchor brackets are welded to the
deck, port side, between frames 41 and 42, for securing the anchor. Fourteen deck plates are provided in pairs, port and
starboard, at frames 7, 11, 19, and 27 for venting the sealed watertight holds below the cargo deck. A single lifeline with
28 portable stanchions is provided for personnel safety. A double lifeline is provided aft of frame 31. Twelve fender
lashing eyes are welded to the deck, six per side, at equal intervals, port and starboard.
b. Two watertight access hatches are located on the main deck. One 30 by 24- inch raised watertight hatch
located port of the centerline aft of frame 33 provides access to the engine room. Another 30 by 24-inch raised
watertight hatch located port of the centerline on the lazarette cover plate aft of frame 39 provides access to the lazarette
compartment.
c. A telescoping, hinged mast is rigged on the main deck near centerline immediately aft of the pilothouse
superstructure. The telescoping mast is the foundation for the masthead light, the anchor light, the upper and lower not-
under-command lights, the remote magnetic heading transmitter, and the halyard for the ensign. The mast is designed
to be manually extended to its full height for use in the vertical position, and to be completely lowered and hinged to
starboard for horizontal stowage on deck. The mast hinged foundation is welded to the deck adjacent to centerline at
frame 39. Mast support brackets and electrical connection boxes for the mast lights and remote magnetic heading
transmitter are positioned on the rear of the pilothouse bulkhead. Securing staples with lashing material for stowing the
mast in the horizontal position are welded to the deck starboard of the centerline at frame 43.
1-6
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