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Q2. As a second engineer of a vessel, you are instructed to submit to the superintendent engineer a complete indicator cards together with relevant data. Give full account of your work in taking the cards and preparing them for submission. Tabulate the data you forward, both that extracted from the cards and otherwise obtained, giving typical figures taken from a motor ship.

Q1. Sketch and describe a turbocharger bearing lubrication system. State the type of bearing employed and explain the advantages and disadvantages of the lubricating system described.

Q5. With reference to the crankshaft and running gear of an engine, explain static balance, Dynamic balance, Torque reaction couple, and Critical speed

Q4. Recent experience has shown persistent damage occurring on seating faces of main engine exhaust valves which is not confined to any particular cylinder unit.

A. State, with reasons, the possible causes;

B. State the short-term action to be taken in order to minimize engine operational problems; C. State, with reasons, how future incidents of this nature could be minimized.

Q9. With reference to timing chains:

A. State the cause of chain elongation in service, using a sketch of a section of a camshaft roller chain to illustrate your answer;

B. State: i. The effects of increased chain length:

ii. The method of assessing percentage increase in length:

C. Explain how the effects of elongation are corrected:

D. State why a limit is placed on percentage chain elongation and give typical example.

Q8. (a) Describe, with the aid of a sketch, the main engine auxiliary equipment for automatic monitoring and regulation of the fuel viscosity.

(b) Explain the operation of the system, which incorporates the equipment described in Q.8(a).

(c) For an engine which is maneuvered on distillate fuel but operated on heavy residual oil at sea, static, as second engineer, the standing orders you would issue for the procedure to be adopted when changing form distillate fuel to heavy residual oil and vice versa.

Q5. With reference to crankcase diaphragm glands: Explain why effectiveness deteriorates in service.

A. Describe the procedure for renewal of parts so that efficiency is restored. (6)

B. Describe how effectiveness is restored if spares are unavailable. (5)

C. Explain the functions of the upper and lower sections. (5)

Q8. With reference to bottom end bolts for medium speed four stroke engines:

A. Explain why bottom end bolts will ultimately fail under normal operating conditions;

B. Identify the features incorporated into bolt design to inhibit failure;

C. Explain how bolt failure may be hastened when maintenance is carried out;

D. Describe, as Second Engineer, your strategy for preventing bolt failure.

Q9. Whilst operating in heavy weather the main engine loses power and misfires. Investigation shows considerable quantities of water in the fuel.

A. State, with reasons, the immediate action you as Second Engineer would take to ensure the safe operation of the main engine;

B. State, with reasons, the possible place where water could enter the fuel system;

C. State, with reasons, the standing instructions you as Second Engineer would issue with respect to the operation of the fuel system in order to prevent major problems due to water in the fuel.