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. (a) Answer the following:
(i) State why the simultaneous injection of fuel oil and starting air into a main engine cylinder is undesirable. (2)
(ii) Explain how simultaneous injection of fuel oil and starting air is prevented. (4)
(b) Answer the following:
(i) Explain how a leaking air start valve is detected while the engine is running. (4)
(ii) Describe the actions to be taken upon discovery of a leaking air start valve. (6)
Q4. As engineer officer of the watch explain the procedure to be followed in the event of a crankcase oil mist alarm on a bridge controlled, constant speed, main propulsion engine fitted with a controllable pitch propeller. (16)
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