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Q1. Describe a suitable means of withdrawal procedure for the removal of keyless propellers.

Q6. A marine diesel engine fresh water cooler end cover is badly corroded and holed. Other than replacing it, suggest some measures of repairing it (a) while in operation. (b) When not in operation. Repair procedures must be effective. practicable and innovative.

Q6. With Reference to Main Engine Fuel Pumps.

(a) Explain how the setting of a variable injection timing fuel pump is checked and adjusted.

(b) State why it may be necessary to adjust the settings of a variable injection timed fuel pump.

Q5. A.  During the weighment of CO2 bottles required for total flooding of Engine room, it was observed that few bottles are less than the original capacity.  State the reasons for the same and checks / tests to be made prior refilling;

B. State how often the CO2 bottles are required to be weighed and pressure tested.

Q5. Express your reactions and state the subsequent investigation you would make if a laboratory report on a used diesel engine oil sample indicated the presence of appreciable amounts of: -

A. Iron; B. Copper, Antimony and Tin; C. Silicon.

Q2. Write short notes on following:

A. Magnetic Particle Inspection (MPI)

B.  Ultrasonic Testing (UT)

C. Radiographic Testing (RT).

Q2. With reference to Marine Diesel engines:

(a) Describe how crankshaft alignment is checked.

(b) Identify with reasons the causes of crankshaft misalignment.

(c) State how the measurements are recorded.

Q9. Severe engine vibration has recently become evident when the main engine for which you are responsible operates within a certain speed range –

A. State, with reasons, the possible causes of such vibration;

B. State the consequences of operating the engine under such vibratory conditions;

C. Describe the procedure you, as Second Engineer, would implement in order to investigate and rectify the problem.

Q9. What are the effects of following on the sluggishness of steering gear operations;

A. Air entrapped in hydraulic oil;

B. Worn pins and weak springs in hunting gear;

C. Shock valves leaking