Q12. With reference to roll reduction systems, explain the principles of operation of EACH of the following, stating the advantages and disadvantages of EACH:
(i) Bilge keels (5)
(ii) Passive Uncontrolled Tanks (5)
13. Explain, with the aid of a mid-ship half sectional sketch of a container ship, how strength is built into this type of vessel whilst still allowing access to the cargo holds. (10)
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)
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