Steering By Engine-Direction

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Emergency Engine Shutdown

TM-55-1905-222-14 Landing Craft Mechanized (LCM-8) (ROHR and Gunderson Models) (1905-01-284-2647 AND 1905-01-284-2648) Manual

Emergency Boat Stopping

TM 55-1905-222-14

To turn the LCM-8 to starboard while underway, decrease the starboard engine speed while maintaining

the port engine speed. The turning rate to starboard is predicated on the difference in speeds of the

port and starboard engines. Set the starboard engine throttle to the appropriate engine speed for the

desired turning rate. When the turn is completed, increase the starboard engine speed to that of

the port engine.

2-9.6.2 Steering By Engine-Direction. At IDLE engine speeds, the LCM-8 can be turned by manipulating the

marine transmission control levers as follows:

CAUTION

An engine speed of S50 RPM should be maintained when steering

with the engine controls. Shifting marine transmission modes

(FWD to REV or vice versa) at high engine speeds will strain the

marine transmission assembly, cause excessive friction in the

clutch mechanism, and produce a damaging shock load on the

propulsion machinery.

NOTE

The rudders should be positioned amidships when steering with the

engine controls.

To turn the LCM-8 to port using the propulsion control levers (20), place the starboard propulsion

control lever in the FWD position and the port propulsion control lever in the REV position. When the

turn to port Is completed, return both propulsion control levers to the NEUTRAL position and proceed

with underway operations.

To turn the LCM-8 to starboard using the propulsion control levers (20), place the port propulsion

control lever in the FWD position and the starboard propulsion control lever in the REV position.

When the turn to starboard is completed, return both propulsion control levers to the NEUTRAL position

and proceed with underway operations.

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