Q3: Your ship after having been accidentally grounded was taken to a dry-dock for inspection and necessary repairs. What defects would you look for in the following parts, that may have sustained damage due to grounding and suggest methods of repairs and tests that may be required to be carried out to the defects noticed:
A. Propeller and tail end shaft.
B. Main engine crankshaft.
Q2. State how and why the following machinery items are effected when the maximum service speed of a Vessel is consistently maintained in heavy weather.
A. Intermediate shafting,
B. Propeller shafting,
C. Shafting coupling bolts,
D. Main thrust pads.
Q6. With reference to main shaft bearings that are excessively loaded or very lightly loaded state for each condition what are the;
a) Indications of the fault,
b) Effects on adjacent bearings
c) Remedial steps.
Explain why load distribution on main shaft bearings changes in service.
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