Q7. With reference to deck machinery:
(a) sketch a line diagram showing the layout and components of a hydraulic system with a variable delivery, pressure compensated pump and accumulator, suitable for the operation of deck machinery(5)
(b) discuss the advantages of using electrically driven machinery over hydraulically driven winches and windlasses. (5)
>> System shown here has a centralised hydraulic power pack unit where all hydraulic deck machineries such as mooring winches, anchor windlass, cranes, Anchor brake etc are supplied from.
>> 5 marks are given just for the drawing please spend some time and draw a neat diagram.
21-Dec: Most candidates did well with this question, some never bothered with the sketch but still got marks for part (b).
18-Dec: No real problems here.
17-Oct: The standard of the sketches was good but the answers for part (b) left a bit to be desired not a lot of candidates then energy requirements.
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