Q3. With reference to the disposal of bilge water from the machinery spaces:
(a) Explain when it is NOT permissible to discharge the bilge water overboard, even via an oily water separator. (8)
(b) State the maximum permissible oil content of the overboard discharge. (2)
(c) Identify the documentation to be completed and state by whom, following such an operation. (6)
Q6. (a) List FIVE protective devices fitted to a main electrical switchboard (10)
(b) Explain the meaning of the term Earth Fault and state why it is undesirable in electrical installations. (6)
Q8. (a) State the measurement that gives an indication of a ship's stability. (2)
(b) Explain the meaning of the measurement stated in (a). (2)
(c) Explain how the measurement given in (a) indicates EACH of the following:
(i) Stable stability. (4)
(ii) Unstable stability. (4)
(iii) Neutral stability. (4)
Q9. Explain the meaning and purpose of EACH of the following ship terms:
(a) Transverse watertight bulkhead (4)
(b) Bilge keel (4)
(c) Shear strake (4)
(d) Cofferdam (4)
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