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)
Q4. (a) Describe how the thrust of the propeller is transmitted to the hull of the ship. (4)
(b) Describe, with the aid of a sketch, how the surfaces, within the thrust block, transmitting the thrust are separated by the lubricating oil. (8)
(c) Explain the importance of the oil temperature within the thrust block (4)
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)
Q7. With reference to the testing and maintenance of large electric motors:
(a) State the minimum satisfactory value of insulation resistance (2)
(b) State the instrument AND voltage to be used for the insulation resistance test (4)
(c) State the regular maintenance that is necessary for good electric motor operation (10)
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)
Username or email address *Required
Password *Required
Note: Entering wrong username in the login form will ban your IP address immediately. Entering wrong password multiple times will also ban your IP address temporarily.
Log in
Lost your password? Remember me
No account yet?
