As before, click on the picture to see the animated sequence.
What is your decision?
Static image: UMP_LTW003s.gif
Answers after the break
Umpire Calls Directory
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Tactical Sailing Situations diagram: UMP_LTW003.tss
What the umpires saw:
* Before the start Blue was sailing down wind on port tack.
* Yellow completed a tack onto starboard , reached a collision course at position 3
* Blue did nothing until position 3 and gybed in position 4.
* Yellow had to alter her course in position 4 to avoid a collision.
Rules applicable: Rule 10 and 15
Blue keeps clear and Yellow has to give room, which she does
No rules broken, no penalty; Green/White Flag
Hi Jos,
ReplyDeleteI don't know how much time there was between sit 3 and 4 but when is rule 15 no longer applicable and does rule 16.1 kick in?
Two things: First, these are BIG boats, (AC) so it takes time to respond.
ReplyDeleteTwo; 16.1 does not apply because Yellow is changing course to avoid Blue. The collision is eminent before, not because of a change in course of the r-o-w boat.
Before the tack Yellow is r-o-w boat, (rule 11), she becomes keep clear boat when she passes head to wind (rule 13), and again becomes r-o-w boat when on a close hauled course.
At that pos (3), she obliged to give Blue opportunity to respond under rule 15. Blue only has to respond after Yellow becomes r-o-w boat in pos 3 and does so by gybing and luffing to pass in front.
Yellow luffs to avoid the collision and because she has not given Blue enough room to respond.