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12 Cards in this Set
- Front
- Back
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What are the reasons that grease lines are all piped out to 1 point? |
Make it easier to grease the rudder heads Make it safer to do so as the rudder stock can and will move around anytime without warning |
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Name the main modes of steering and describe them? |
Auto mode- where rudder demands are generated by a computer system in order to keep the ship on a present course. The auto steering mode is available at the bridge control only Hand control steering mode- this is a manual mode of steering, where the required rudder angle is controlled by the helmsman. This mode is situated on the bridge console only. Non hand control steering mode- where the rudder can be moved from either port or stbd. The non hand control steering mode is available at the bridge on some ships and also from somewhere in the aft control area. |
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What are the MCR sensors and alarms? |
Low oil level Low low oil level High oil temperature Power failure Low boost pressure Motor overload |
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When you are steering from local control, where are you? |
In or close too aft steering compartment |
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Describe the main advantage of the vane unit compared to the ram unit? |
It is more compact than the ram units |
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What are the uses for the hand pumps? |
Used under extreme failure or during maintenance or repair |
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When conducting your rounds in the steering compartment what should you ensure you do? |
Wipe up any oil leaks or residue as this can be very dangerous Always check the header tanks oil levels |
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What happens when low low oil levels, low boost pressure or power fail are detected? |
The hydraulic power units are automatically shutdown |
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Give a general description of the steering for ships? |
The basic steering gear arrangements consists of an electrically driven hydraulic pump unit. This hydraulic pump unit pushes oil under pressure to either hydraulic cylinders or vane units. These units apply a torque to the rudder stock when turns it This turning if the rudderstock moves the rudder and this in turn generates a latered force needed for steering or turning. |
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Name the main parts of the rudder head bearing and carrier |
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On ships name the location where the steering can be controlled from? |
Remote- bridge Local- near or in aft steering compartment |
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On a vane steering unit describe the relationship between the stator and the rotor |
The stator is secured to the ships structure. Inside the casing, the van rotor( which is keyed to the rudder stock) is turned when it is under hydraulic pressure. This turning motion supplies the required torque to turn the rudder |
