DESCRIPTIVE DATA.

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MAJOR IDENTIFICATION AND INSTRUCTION PLATES.

TM-55-1905-221-14-1 Landing Craft Mechanized Steel DED Overall Length 74 Feet Mod 1 Mark VIII Navy Design LCM-8 Manual

PROPULSION UNITS

TM 55-1905-221-14-1

1-10. DESCRIPTIVE DATA.

a. General. This paragraph contains all the maintenance data pertinent to operator, unit and intermediate

maintenance personnel.

b. LANDING CRAFT.

Length, overall ......................................................................................................74 ft. (22.55m)

Length, overall , hull, molded .............................................................. 71 ft. 6 3/4 inc. (21.84 m)

Length, designed, waterline, molded...................................................... 63 ft. 3 1/2 in. (19.28 m)

Beam, extreme........................................................................................ 21 ft. 0 5/8 in. (6.40 m)

Beam, molded ....................................................................................... 20 ft. 11 3/4 in. (6.32 m)

Depth, molded amidships ............................................................................. 9 ft. 4 in. (284.5cm)

Draft, (full load) .......................................................................................... 4 ft. 6 in. (137.16cm)

Speed, maximum loaded...................................................................................9 knots (16.66km)

c. PROPULSION UNITS.

Manufacturer ............................................................................................................Detroit Diesel

Type.................................................................................................................. Twin Engine units

Models .......................................................................................... 12005A starboard/12006A port

Cylinders ................................................................................................................. 6 (per engine)

Bore. .............................................................................................................. 4.25 in.(107.95mm)

Stroke. .................................................................................................................. 5 in. (127 mm)

Displacement. .........................................................................................425 cu. in. (per engine)

Fuel..................................................................................................................................... Diesel

Rating (100 (37 ) 29 in. .............................................. Hg) . 300 HP at 1800 RPM continuous

Fuel consumption ................................................................. 21.5 GPH (81.3775 1) (each engine)

Fuel tank capacity (2). ................................................................ 432 gal. (1635.12 1) (each tank)

Firing order:

R. H.............................................................................................rotation (stbd) 1-5-3-6-2-4

L. H ........................................................................................... rotation (port) . 1-4-2-6-3-5

Fresh water capacity (4 engines) .................................................. 9 gal. (34.065 1) (each engine)

Propeller

shaft rotation ................................................ Starboard-clockwise/Port-counterclockwise

Transmission ....................................................................................................... Allison hydraulic

Type...................................................................................................... Twin 6-71, 2 Cycle Diesel

Displacement .................................................................................................851.2 Cu. In. Total

Displacement

Models ................................................................................................................12005A, 12006A

Propeller Shaft Rotations:................................................................... Stbd.-Clockwise (For R. H.

(As Viewed From

Propeller) Port-Counter-

Output Flange)

clockwise (For L.H.

Propeller)

Weight Dry (Approximate) ........................................................................................ 5860 Pounds

Transmission .......................................................................................................Allison Hydraulic

Transfer Gear:

Type. ..............................................................................................................Detroit Diesel

Reduction Ratio ..............................................................................................................2:1

Lube Oil Capacity ................................................................................................ 18 Quarts

Lube Oil Flow....................................................................................................... 7 Gal/Min

Starter .......................................................................................................... Electric 24 Volt, Out-

board Engine; Hydraulic

Starter-Inboard Engine

1-8