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Also halve the top 10 in this years F18 world championships can be banned under the given rules as they at one time sailed in the Taipan 4.9 class which isn't official recognised.


Actually I don't think it's correct that they could be banned just for sailing a class that isn't recognised. I believe the two situations in which someone can be banned (at least the ones relevant to the discussion here) are (i) sailing an unapproved world championship, and (ii) sailing in an event that is not organized by someone recognized by the ISAF.

The SA Taipan Association at least is listed on the Yachting Australia website (incidentally, the F16 configuration gets a mention as well), along with all of the clubs in Australia that sail the Taipan. Those clubs are presumably affiliated with Yachting Australia, and possibly the Taipan association is as well. In any event, RRS 88.1(d) says that racing may be organized by

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a class association, either with the approval of a national authority or in conjunction with an affiliated club;


As far as I can tell, the class association itself does not have to be affiliated with anyone. So even if the Taipan association isn't affiliated with Yachting Australia (and I don't know if it is or not), as long as Taipan racing is done in conjunction with a club affiliated to Yachting Australia, then there's no problem.

You could sail bathtubs and still be ok as long as a recognized club organises the race. But just don't try having a bathtup sailing world championship.

Ok sorry Mary. I'll stop now.

Mark.