When steering by autopilot,how often should the steering be checked?()
A、12 times on each watch
B、When time allows
C、At least once a watch
D、No checking is necessary
A、12 times on each watch
B、When time allows
C、At least once a watch
D、No checking is necessary
A、ram relief valves bypass oil to stop rudder movement B、six-way valve shifts to the neutral flow position C、steering pump electric motor is de - energized by the transfer switch D、follow-up gear takes the hydraulic pump off stroke
A、apply the relevant Steering and Sailing Rules as a power-driven vessel B、apply the relevant Steering and Sailing Rules as a Sailing vessel C、apply the relevant Steering and Sailing Rules as a vessel not under command D、apply the relevant Steering and Sailing Rules as a vessel engaged in a towing operation
A、a motor-driven steering wheel B、a pneumatic steering wheel C、a hand-driven steering wheel D、an electric steering wheel
A、a motor-driven steering wheel B、a pneumatic steering wheel C、a hand-driven steering wheel D、an electric steering wheel
A、A.modulating the oil flow with the six-way valve B、B.moving the automatic pressure differential valve C、C.moving the receiving telemotor which regulates the tow-way valve D、D.varying the eccentricity of a floating ting or angle of a tilting box
A、A.transmitter at the steering station and a receiver at the steering engine B、B.reversible motor at the steering station geared to the steering pumps C、C.small induction motor on the bridge which controls the redder through pulleys D、D.variable displacement hydraulic pump driven by a reversible DC motor