With reference to a hydraulic steering gear, explain EACH of the following: (a) the factors that may contribute to the failure of a hydraulic pipe coupling: (2) (b) why it is of the utmost importance that in the event of a hydraulic system failure that the rudder is locked and isolation of the affected area is achieved as soon as possible: (2) (c) the problems that may occur when locking the rudder in heavy weather (2) (d) why hydraulic locking is preferable to mechanical means (2) (e) what is meant by the single failure concept (2)
Steering & stabilizers
UKM Tuticorin 
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