OK, here’s my analysis of the scenario in the posting ‘Baker
2012’ on this blogsite. First, as
everybody agrees, A entered the zone clear ahead of both her teammate B and
her opponent X, and as she never left the zone or tacked, A is therefore entitled to mark-room from both boats. Except
possibly for a brief moment when she is jibing, A also has right of way over
X. She doesn’t break rules 15 or 16 after
position 5 in this scenario, but if she had, she would have been exonerated
under rule 18.5 because from that point on, she was sailing to the mark and then sailing her
proper course at the mark.
As windward boat, X was required to keep clear of A and she
clearly didn’t do so. So X needs to take a penalty (one turn, if she does so voluntarily; two, if the umpires get involved).
Now that we’re all agreed that X
re-entered the zone clear ahead of B (see my post, ‘Graphic animations’), we should all
agree that B is required to give X mark-room.
At position 6, X is on port tack and B is on starboard, so X is required
to keep clear of B, which she clearly isn’t doing. However, she’s exonerated under rule 18.5
because she’s sailing to the mark. By
the time X is at the mark, B is a windward boat required to keep clear, so it’s
irrelevant whether X is on her proper course (though it would be interesting to
hear your opinion – in position 7, is X on her proper course?).
So we’ve got B failing to keep clear of X and X failing to
keep clear of A. Both boats should do their turns, or, if they're protested and don't spin, the umpires should tell them
to take two turns. Note that there’s no additional penalty for hitting the
mark, as they’ve broken rules of Part 2 as well – see rule 44.1(a).
As it happened, both X and B took voluntary single-turn penalties. But this raises another question – did either
team gain an advantage? In order to
decide that issue, we must determine what combination the teams had just before
the fouls, and compare it with the positions they had afterwards (taking into account the penalty turns).
What positions should we declare the three boats to be in, just before
everything went crazy? Was A’s mark-trap about to work, so Yellow
had a 1-2? Or did X break the trap by
jibing behind A, so Yellow had at best a 1-3?
We’ll look at those questions, and tell the rest of the story, in a
later post.
I have a question in return. I think it's entirely questionable, but let's assume for purposes of argument that A's mark trap was "about to work". Does that advantage apply in advance of the trap actually working? How?
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