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Q2. Describe how you, as a Second Engineer, would prepare an auxiliary boiler for survey by a classification society.

Q3. Damage has occurred to the main engine valves and the fuel supplied at a particular port is suspected. The owner’s case, however, in the subsequent dispute may be weak because the fuel was ordered specifying only type and viscosity.

A. Apart from fuel specification, describe how you, as Second Engineer, should have assisted the owners’ case when receiving the suspect fuel.

B. Describe the ISO fuel standard that is to be used when ordering bunker fuel.

C. Explain how the correct fuel standard is selected.

D. Suggest, with reasons, why particular mention should be made of certain elements that might not be included in the fuel standard.

Q1. Sketch a sealing arrangement for an oil-lubricated stern tube. Identify the common forms of seal failure; State how oil loss due to seal failure can be restricted whilst on passage? What is the material used for sealing rings and propeller shaft liner?

Q5. A. Sketch a four-ram steering gear arrangement capable of 100% redundancy; B. Describe the operation of the arrangement sketched in A.

Q5 A. Describe a transverse “bow thruster” unit; Mention should be made of where it is fitted, how the propeller hub with shafts and internal bevel gear drive are usually supported and how the maneuvering oil is conveyed to the propeller main servo-motor.  Also, mention how strength thrust and reverse thrust are achieved; B. Give reasons why the standard constant speed non-reversing type electric motor is preferred as the prime mover rather than a diesel engine.

Q5.A. Sketch a watertight door and frame showing the manner of attachment to the bulkhead and the additional reinforcement carried by the bulkhead to compensate for the aperture.

B. Explain how water tightness of the door and frame mating surfaces is ensured with hydrostatic pressure tending to force the faces apart.

C. (i) Describe the means of closing the door;

(ii) State the number of closing stations and the position of each.

Q9. With reference to fatigue of engineering components:

A. Explain the influence of stress level at cyclical frequency on expected operating life.

B. Explain the influence of material defects on the safe operating life of engineering component.

C. State the factors which influence the possibility of fatigue cracking of an auxiliary boiler feed water pump shaft and explain how the risk of such cracking can be minimized.

Q8. With respect to tankers describe

(a) How pump room and cargo tankers are ventilated.

(b) The main problem of carrying liquefied natural gas

(c) How the boil off from liquified natural gas is handled.

Q5. A. Explain why it is essential to ensure adequate cooling of air compressor cylinders, inter coolers and after coolers; B. State with reasons the possible consequences of prolonged operation of the compressor if these areas are not adequately cooled.