Q1. The vessel of which you are 2nd engineer suffers grounding. Describe the survey and inspection which you will carry out at the next dry docking of the vessel in a foreign port.
Q6. A. Describe the survey procedure of an oil lubricated stern bearing and shaft. (8)
B. Explain how the integrity of the outboard seal of an oil lubricated stern tube may be proved before the dry-dock is flooded. (8)
Q6. A. Sketch and describe the construction and operation a life boat which handbrake and centrifugal brake. B. What maintenance do the brakes require? C. At what lowering velocity does the centrifugal brake operate?
Q7. Describe an air receiver and explain clearly the purpose of the mounting. State the defects which may develop and explain the precaution which should be taken to minimize the possibility of deterioration OR damage of air receiver
Q5: A. Give three reasons why cracks occasionally develop in large piston crown. State to what extent this cracking is considered of consequence; B. State how it is dealt with in the following instances - Fine hairline; Localised and shallow crack,
Q6. With reference to the adoption of unmanned machinery spaces describe routine maintenance on Automatic control and alarm systems to deal with - High bilge level; Fuel oil tank overflow; Bearings overheating; Fire detection
Q8. Explain how each of the following conditions contributes to the satisfactory performance of oil centrifuges. A. Correct bowl speed; B. Cleanliness of bowl; C. Low rate of feed to the bowl; D. Contaminated oil preheated prior to centrifuging; E. Contaminated oil allowed standing for an appreciable time prior to centrifuging.
Q6.(a) Suggest four reasons why the temperature of the oil in the steering gear system may become excessive.
(b) With reference to steering gears explain how the ship may be steered in each of the following circumstances;
(i) destruction by fire of the primary supply cable;
(ii) destruction by fire of the telemotor lines;
(iii) bearing failure in the running pump;
Q2. With reference to reciprocating air compressors explain the cause of the following faults.
A. Collapse of discharge valve springs;
B. Breakage of plate valves;
C. Overheating of the discharge air with an unrestricted air intake;
D. Inoperative piston rings.
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