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Day Skipper revision module 16 of 17
Harbour entry, IALA buoyage (Region A), transits, leading lines, and clearing bearings.
8 guided lessons · 18 practice questions · 12 flashcards
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Confined water compresses the time available to detect and correct an error. Pilotage therefore combines an updated chart and publications with visual marks, depth, compass, distance, tim...
Authority cluster
Start with corrected charts and relevant sailing directions, notices, tide data, weather, harbour instructions and traffic information. The MCA expects a voyage assessment appropriate to...
First identify both objects and confirm the intended line on the chart or publication. Similar buildings, seasonal foliage, background lights and an obscured lower mark can create a convi...
On the chart, draw or imagine a line from a conspicuous object that clears the danger by the chosen margin. Measure its true bearing in the direction from the vessel towards the object, s...
The UK uses Region A, where port-hand lateral marks are red and starboard-hand lateral marks are green in the direction of buoyage. Region B reverses those lateral colours. Confirm the re...
A Region A port-hand mark is red and may be can-shaped or carry a can topmark; a starboard-hand mark is green and may be conical or carry a cone topmark. When lit, each uses its side colo...
North has both cone points up and black over yellow; south has both points down and yellow over black. East has the cone points apart with bases together and black-yellow-black bands; wes...
An isolated danger mark is black with one or more broad red horizontal bands, carries two black spheres when fitted and shows white Fl(2) when lit. It is placed on or near a danger with n...
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This independent revision material is not a substitute for current official publications, competent instruction or on-water judgement.