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)
Q13. (a) Explain why fatigue cracks occur in a ship's hull, stating the locations where they may be found. (3)
(b) Describe the hull inspection that should be carried out m drydock to ascertain the maintenance and repairs that may need to be carried out. (7)
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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