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there are no other vessels around operating in a narrow channel the Master enters it in the ship's log necessary to avoid immediate danger
rudder will respond sluggishly hydraulic rams will over-speed sight glass will show bubbles ram relief valves will lift
The follow-up gear The rudder angle indicator The synchronous electric transmitter A rudder angle limit switch
stay near the middle of the channel keep to the starboard side of any vessels you meet exchange whistle signals with any other vessels in the channel keep to the side of the channel which lies to your starboard"
a motor-driven steering wheel a pneumatic steering wheel a hand-driven steering wheel an electric steering wheel
Headway Sternway No way on ，with engines stopped No way on ，with engines full ahead"
The six-way valve opens The steering service pump motor is stopped The follow-up gear takes the pump off stroke The cylinder relief valves bypass oil to the suction side the pump
hydraulic steering follow-up steering remote control steering air controlled steering
When the helm is at any angle other than amidships When the six-way valve is opened When the ram relief valves lift When the redder angle is different from the position of the helm
trick wheel accumulator standby pump telemotor
When a risk of collision exists When action by the give-way vessel alone will not prevent a collision When the bearing to give-way vessel becomes steady When the vessels become less than 1/2 mile apart"
when proceeding along the course of a narrow channel or fairway when taking avoiding action in accordance with the steering and sailing rules when navigating within a narrow channel or fairway when impeding the passage of another vessel
set for maximum torque on the purge and vent stroke in the neutral position rotating backwards
modulating the oil flow with the six-way valve moving the automatic pressure differential valve moving the receiving telemotor which regulates the tow-way valve varying the eccentricity of a floating ting or angle of a tilting box
relieves excessive fluid pressure takes the pump off stroke when the desired rudder angle is attained synchronizes wheel position with the rudder position returns the rudder to midposition when the wheel is released
the steering gear room the fire fighting pipe line the fuel oil tank the bath room
……. when time allows At least once a watch No checking is necessary
cause loss of hydraulic oil from the system result in extreme damage to the pump cause damage to the pump ff not continually drained from the pump casing result in the system high side pressure to substantially drop off
Loss of vessel steering Overheating of the gyrocompass Jamming of the six-way vale Jamming of the follow-up device
ram relief valves bypass oil to stop rudder movement six-way valve shifts to the neutral flow position steering pump electric motor is de - energized by the transfer switch follow-up gear takes the hydraulic pump off stroke
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