Case #63 answer
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----- Original Message ----- 
From: Al Schonborn 
To: dleonard23 
Sent: Monday, January 21, 2002 9:12 PM
Subject:  old grubbie trying to re-learn the rules

Hi, Dave:

I'm trying to remember who it was at our AGM on Saturday that told me he'd run into you. How nice to hear from you! I'm supposed to be doing a heavy German-English translation job with a serious deadline - but this makes for a nice break since I always love to talk rules. Yours is a very interesting case which I'll add to the site when I get the chance. The first step after determining what actually happened is always to find the Rule(s) that would apply. In this case, the basic rule is #11 which reads:

11 On the Same Tack, Overlapped
When boats are on the same tack and overlapped, a windward boat shall keep clear of a leeward boat.

Then we look for limitations on the right of way boat (i.e. leeward in this case): Rule 17 states:

If a boat clear astern becomes overlapped within two of her hull lengths to leeward of a boat on the same tack, she shall not sail above her proper course while they remain on the same tack and overlapped within that distance, unless in doing so she promptly sails astern of the other boat. This rule does not apply if the overlap begins while the windward boat is required by rule 13 to keep clear.

Thus the key moment in your case was the relative position of the two boats at the instant leeward established his overlap. If at that moment, he was more than two his lengths to leeward of you, then 17 would not apply and as leeward boat, he would have the right to "luff" you - albeit within the limitations of 16.1 which reads: 

16 Changing Course
16.1 When a right-of-way boat changes course, she shall give the other boat room to keep clear.

Of course you might note that if he was sailing a converging course all along and does not alter his course at all, 16.1 will not apply since it only limits a right-of-way boat that actually changes course! In that case, his only limitation is the overriding requirement to avoid a collision as per Rule 14:

14 Avoiding Contact
A boat shall avoid contact with another boat if reasonably possible. However, a right-of-way boat or one entitled to room or mark-room
(a) need not act to avoid contact until it is clear that the other boat is not keeping clear or giving room or mark-room, and
(b) shall be exonerated if she breaks this rule and the contact does not cause damage or injury..

If leeward was within two of his lengths of windward (i.e. you) at the moment the overlap was established, then rule 17 does limit him but things are not quite as clear cut. If it came to a protest, leeward would need to convince the protest committee that he was sailing his proper course which is defined as:

A course a boat would sail to finish as soon as possible in the absence of the other boats referred to in the rule using the term. A boat has no proper course before her starting signal.

In this case, leeward could argue that he was sailing high all along to cut off a boat threatening to pass him to windward. If that is what he was doing, then he has the right to expect you to keep clear, since if you (the "other boats referred in the rule ...") had not been there, he would most likely have sailed the very same course, i.e. high to cut off the other windward threat. I suspect that, in practice, it might be difficult to convince the average committee of this. 

In the end, it seems to me that this was one of the many cases in which thinking ahead would have been very useful. If leeward was so worried about the third boat, he should have cut up across your transom much earlier (while he still could!) or, as you say, passed well to leeward of you and then, cut up across your bow.

To summarize: One of the interesting things about the new rules is that there is no luffing rule any more: Rules 11, 16 and 17 cover it all. 11 gives leeward the right-of-way while 16 and 17 place limits on what he may do with those rights. That's all there is to it. By the way, in your letter, you talk about sailing your proper course, but that does not really enter into it. What it comes down to, is that leeward was the right-of-way boat and you had to keep clear of him as long as he stays within the limitations placed on him by Rule 17 and 16. In fact, even if he breaks rule 16 or 17, you are still expected make a reasonable effort to keep clear of of the leeward boat

The rules are generally organized in this way: boats are right-of-way boats because they are starboard, leeward or clear ahead and then there are other parts of the rules that limit what the right-of-way boat is allowed to do. A perfect example of this is the mark-room rule (18) which - contrary to a misconception I held until a few years ago - does not automatically make an inside boat entitled to room into the right-of-way boat. 

Picture the end of the second reach of a buoys-to-port triangle. You are approaching the mark with an inside overlap on a boat to leeward of you. While mark-room applies, leeward remains the right-of-way boat but his actions are limited by rule 18 such that he is not permitted to cut you off, i.e. he must give you room to pass or round the mark. Windward is not the right-of-way boat during all this however, and is therefore only entitled to mark-room as defined in the Rules.

In other words, Windward is not permitted to take all the room he might like - to make a tactical wide-and-close rounding - but rather just enough to make a close-and-close seamanlike rounding. How much room that is depends on the type of boat and the weather conditions. It would be a judgment call by the Protest Committee. Surprising how few racers - even the best ones - understand this!

Hope this helps - and I'm really happy you're enjoying the site (as I certainly am!) Let me know if you ever want to introduce your better half to Wayfarers and borrow a boat for one of our events. I'm sure something could be arranged - and we'd love to see "an old grubbie"!!

Speaking of which, I expect you're aware that Mike Milner has a full-time job as Director of Sailing (or some such) at none other than the RCYC!!! There's Bronte Junior Grubbies everywhere!!

Best regards,

Uncle Al (W3854)

PS: One last item, I believe the Rules no longer refer to free legs, off the wind or downwind (which were always interchangeable as far as the Rules were concerned), the only reference you'll get is stuff like "except on a beat".

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Case #64
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If you have any Rules questions or scenarios that you'd like me to clarify,
I'd love to hear them and add them to this quiz!
Just contact Uncle Al at uncle-al@cogeco.ca