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)
Q13. With reference to double hulled oil tankers:
(a) sketch a mid ship cross section; (5)
(b) state the reason this type of design; (1)
(c) state FOUR disadvantages of this type of design. (4)
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