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)
Q3. With reference to a main engine jacket water cooling system:
(a) Explain, with the aid of sketches, how the jacket water temperature is maintained at its optimum value. (8)
(b) State the possible effects on the engine if the jacket water temperatures are maintained outside the desired value. (8)
Q5. State FOUR tests which are required for boiler water, giving a reason for EACH test. (16)
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