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Q12. (a) Describe the SIX degrees of motion that a ship at sea moves in when encountering heavy weather. (6)

(b) Describe the constructional details that are designed to resist the forces exerted on a ship by the motions described in Q(a). (4)

Q13. (a) State the system of classification for access doors passing through watertight bulkheads of a vessel. (3)

(b) State THREE circumstances under which all watertight doors must be closed when situations are defined as potentially hazardous. (3)

(c) As a Senior Engineer Officer, explain to a new crew member how to pass safely

through a hydraulically operated watertight door. (4)

Q14. (a) With reference to the overhaul of a ship side valve in dry dock explain, as Chief Engineer Officer, what information should be given to the docking company prior to work commencing. (5)

(b) Describe how the valves would be overhauled stating the precautions to be taken before returning the ship to service. (5)