Q7. Write reference to gravity lifeboat davits; state the purpose of the following:
a) Centrifugal brake.
b) Dead man’s handle.
c) Davit limit switch. (16)
Q8. In engine rooms that are operated under UMS conditions describe with the aid of sketches how the following are monitored: (8) a) The perforation of a high-pressure fuel pipe. b) Periodical maintenance checks and tests require to be done to verify the effectiveness of the above system. (8)
Q9. With reference to MARPOL Annex IV a) Draw a biological sewage treatment plant and explain the principle of operation. (8) b) Periodical maintenance and checks and tests required to be done to verify the
effectiveness of the above system. (8)
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