Q12. As Chief Engineer Officer on a new vessel which is experiencing severe aft end vibration at full-service speed, write a report to the Engineer Superintendent suggesting reasons for the vibration and recommendations for further sister vessels presently under construction. (10)
Q13. (a) State FOUR reasons for transverse watertight bulkheads in ship construction. (4)
(b) State the minimum number of transverse watertight bulkheads and their location. (4)
(c) Describe how watertight bulkheads are tested. (2)
Q14. As Chief Engineer officer, write a dry dock specification for the repair of the following damage that has occurred, stating what factors have to be considered when costing the repairs. Damage to water ballast tank number 1 port wing. The shell plating 15 mm thick for approx 2 metres square has to be removed and replaced along with the relevant damaged stiffeners. (10)
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