- With reference to the periodical dry-docking of a vessel:
(a) list SIX items of information that could be obtained from a docking plan;(6)
list FOUR conditions to be met prior to dry-docking a vessel.(4)
(a) Six items of information that could be obtained from a docking plan (6 marks)
A docking plan provides the dockyard with technical details to ensure the vessel is docked safely. Information includes:
- Keel profile and position of keel blocks – to align vessel correctly on the blocks.
- Location and dimensions of bilge keels – to avoid fouling on the blocks.
- Positions of sea chests, overboard discharges, and intakes – for access and cleaning.
- Propeller and rudder arrangement – for inspection and repair.
- Shaft line and stern tube position – for alignment and maintenance access.
- Hydrostatic/docking particulars – displacement, draughts, trim limits, and maximum docking weight.
(b) Four conditions to be met prior to dry-docking (4 marks)
- Stability ensured – vessel must be within safe stability limits for docking.
- Trim adjusted – usually with slight stern trim to ensure first contact on keel blocks.
- Tanks and bilges prepared – ballast, fuel, and water levels adjusted as instructed by dockmaster.
- Loose gear and stores secured – to prevent shifting when vessel settles on blocks.
(Other valid answers: fire pumps in readiness, crew briefed, machinery secured as per dockmaster’s orders.)