Q5. (a) Sketch a rotary vane steering and hydraulic circuit showing 2 x 50% units and the directional control valves. (6)
(b) Describe how the system in part (a) can still operate should an oil leak occur. (2)
(c) State the advantages of rotary vane compared to four ram steering gear. (2)
Q5. (a) Sketch the hydraulic circuit for a ram type steering gear that complies with the single failure concept and automatic isolation. (6)
(b) Describe how automatic isolation, for the hydraulic circuit sketched in part (a), is achieved within 45 seconds should leakage of system oil occur. (4)
Q6 . The steering gear operation of a vessel that recently experienced a heavy storm is found to be abnormally sluggish.
(a) State FIVE reasons for possible malfunction of the gear. (5)
(b) State the corrective actions that may be carried out at sea, that will allow the vessel to continue to the nearest port. (5)
Q5. (a) State the regulations pertaining to the main and auxiliary steering gear with reference to EACH of the following:
(i) rudder angle and time of operation;(2)
(ii) electrical supply. (3)
(b) With reference to a hydraulic steering gear, explain EACH of the following:
(i) the factors that may contribute to the failure of a hydraulic pipe coupling; (2)
(ii) what is meant by the single failure concept. (3)
Username or email address *Required
Password *Required
Note: Entering wrong username in the login form will ban your IP address immediately. Entering wrong password multiple times will also ban your IP address temporarily.
Log in
Lost your password? Remember me
No account yet?
