I live diagram would go a long way here. I understand this, but I can imagine where it can be confusing when reading the whole thread. Let me ask this a different way and maybe Mike sees it from a different perspective.
You'll see that the windward boat can prevent the leeward boat's tack because of rule 13. It doesn't matter if L has right-of-way due to rule 12 or rule 11.
Rule 13 states "During that time rules 10, 11 and 12 do not apply."
also that "If two boats are subject to this rule at the same time, the one on the other’s port side or the one astern shall keep clear."
So when does Rule 11 and 12 reapply?
