Q4. With reference to the reversing of an engine:
(a) Describe THREE methods by which it may be achieved (12)
(b) Explain what is meant by lost motion (4)
Q1. With respect to Main Propulsion Engines, state the immediate action to be taken as Engineer Officer of the watch in the event of EACH of the following, stating ONE reason why EACH action is necessary:
(a) Turbocharger repeatedly surging. (4)
(b) Air start manifold/branch pipe overheating local to one unit. (4)
(c) Low scavenge air temperature alarm. (4)
(d) Engine misfires, fuel rail pressure low alarm activates, booster pump pressure high (4)
Q2. (a) Sketch a typical power indicator card for a slow speed marine diesel engine. (6)
(b) Explain how the card may be used to assess the power developed in the cylinder. (10)
Q1. With reference to scavenge fires:
(a) State FOUR possible contributing factors. (4)
(b) Explain how EACH factor mentioned in (a) contributes. (8)
(c) State FOUR indications. (4)
Q4. (a) Describe how the thrust of the propeller is transmitted to the hull of the ship. (4)
(b) Describe, with the aid of a sketch, how the surfaces, within the thrust block, transmitting the thrust are separated by the lubricating oil. (8)
(c) Explain the importance of the oil temperature within the thrust block (4)
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