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Rounding windward mark in the wrong direction

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Chris415700 View Drop Down
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    Posted: 15 Apr 12 at 8:27am
An incident from last week that caused much discussion afterwards, but no conclusion.
  1. Windward mark to be left to starboard.
  2. Dinghy A approaches the mark on the starboard layline.
  3. Dinghy B approaches the mark on the port layline.
  4. Dinghy A leaves the mark to port and bears off onto a reaching course.
  5. At the time dinghy A rounds the mark dinghy B is about 6 boat lenghts from the mark and still on the lay line.
  6. Dinghy A realises his mistake, tacks and sails back to the mark.
  7. When dinghy A gets to the mark he gybes round it to unwind and calls starboard on dinghy B who is about 1/2 a boat lenght from the mark.
  8. Dinghy B manages to avoid a collision, but is not sure whether dinghy A had any rights over dinghy B at the time he called starboard, claiming that he gave dinghy B plenty of mark room when he initilly arrived at the mark.
  9. It is unsure whether dinghy A sailed out of the zone after he rounded the mark in the wrong direction.


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sargesail View Drop Down
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Post Options Post Options   Quote sargesail Quote  Post ReplyReply Direct Link To This Post Posted: 15 Apr 12 at 9:55am
A has to tack to round the mark so this is a port and starboard case.

All the usual limitations on altering course would apply - while there is no evidence here it is easy to imagine that A might have been altering course very quickly and therefore B may not have been able to keep clear - but there is no requirement for B to anticipate the gybe and harden up by A.
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Andymac View Drop Down
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Post Options Post Options   Quote Andymac Quote  Post ReplyReply Direct Link To This Post Posted: 15 Apr 12 at 5:11pm
Ditto Sargesail.
Boat A was never entitled to mark room, but was, then wasn't, then was again ROW boat.
After unwinding back and gybing onto Starboard, it became ROW boat again. Assuming that boat B didn't take avoiding action until boat A had established its right, then the fact that boat B managed to avoid contact (meeting its obligation) suggests that A gave B sufficient time to react to its change of course, so no rule was broken by either boat.
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Post Options Post Options   Quote gordon Quote  Post ReplyReply Direct Link To This Post Posted: 15 Apr 12 at 9:42pm
 When A was on starboard and  B on port  rule18 does not apply. Rule 10 does apply and port tack boat must keep clear. However, when A gybed she acquires right of way and must give B room to keep clear. If B's manoeuvre to keep clear was necessarily unsamanlike ( a crash tack for instance) A broke rule 15.

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Post Options Post Options   Quote jeffers Quote  Post ReplyReply Direct Link To This Post Posted: 16 Apr 12 at 8:50am
.
Originally posted by sargesail

A has to tack to round the mark so this is a port and starboard case.


I don't A did have to tack to round the OP state A bears off on to a reach.

Despite that as A significantly altered course and B could definitely be considered to be keeping clear and only did not keep clear as a result of the RoW boats actions A is at fault.

Gordon has explained it much better though  Wink
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