Thursday, 19 March 2009

ISAF Q&A 2009-025

In continuation from Q&A 2009-020, this one is again about a three boat situation at a mark. This time at a windward mark.

The questions are about the rights a boat has, while sailing on a proper course as inside boat, while having mark-room from a second boat, in regards to a third. Download the ISAF Q&A 2009-025 here.

In contrast to Q&A 2009-024 these answers are pretty straightforward.

In both scenarios rule 18 does not apply between the boat with mark-room from a second boat, towards a third. Therefore al normal rules apply including restrictions under 15 and 16.

I’m taking both Q&A’s (024 & 025) with me to a presentation I’m giving to a group of sailors tomorrow evening. To see how they react to these – in my opinion fairly frequently occurring – scenarios.


Q&A 2009-025 pictureOn a side note. Both pictures in the Q&A are drawn with boats and symbols I haven’t seen before. It isn’t TSS or Boat Scenario.

And it isn’t Angelo’s Protest Diagram Kit v2.doc.


Does anybody recognize the program these diagrams are made with?




  1. I perceive a big difference between Q&A 2009-024 and Q&A 2009-025.

    024 addressed a really difficult situation and provided useful clarification (although I can't say I have 'got my head around it' even yet.

    025 seems to be answering questions that need never have been asked: all that was necessary was to apply the rules as stated. These situations are handled consistently in any number of rules commentary books.

    The Q&A panel has already, in three months, produced more Q&As than were produced in the preceding five years: if they go on at this rate, we will soon have more Q&As than cases or rules.

  2. Agin the answers give rise to other questions.
    The answer to Q 1 is correct as far as it goes but it is silent on rule 19. Surely rule 19 applies between A and B (in relation to C) and if B does not give room for A to pass behind C then maybe B does cause A to break rule 10. It is not (as the answer implies) just mark-room that needs to be considered in this case. Whilst the Q and A committee may have answered the question as asked I do not find it particularly helpful if only a part answer to the scenarios is given as people start to use the answers as gospel.

  3. Program might be Visio

  4. Uli Finckh (the German rules pope) uses these drawings on his own website:

  5. Why we need rule 18.5(b) for exoneration of a boat, if no other boat breaks a rule?


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