PART 2 , S E C T ION B : WHEN BOAT S ME E T — G ENE RAL L IMI TAT IONS 165 T H E S L AM D U N K


Position 1: P has borne away to sail to leeward of S. The moment P is steering a course to clear S’s transom, S luffs (heads up) preparatory to tacking. As long as when she luffs (changes course), P has room to continue keeping clear, S does not break rule 16.1, even if P has to change course immediately to continue keeping clear.


Position 2: S is not past head to wind and is therefore still on starboard tack; P must still keep clear of her under rule 10.


Position 3: S has just passed head to wind. She is now on port tack, i.e., the same tack as P, and P is clear astern. S must keep clear of P under rule 13 until she is on a close-hauled course. P, now the right-of-way boat, does not need to give S room to keep clear under rule 15 if she maintains her straight-line course because she acquired the right of way by S’s actions. However, if P changes course toward S, she is required by rule 16.1 to give S room to keep clear (i.e., to not prevent S from being able to keep clear or cause her to make an unseamanlike maneuver to do so).


Position 4: P has become overlapped with S and remains the right-of-way boat under either rule 13 or 11. If P becomes overlapped to leeward of S before S is down to a close-hauled course, P is not “limited” by rule 17, because S is required by rule 13 to keep clear of her. Therefore P can sail up to head to wind, provided she complies with rule 16.1. If S is on a close-hauled course before P becomes overlapped, then P is “limited” by rule 17 to sailing no higher than her proper course (most likely a close-hauled course) for the duration of the overlap because she became overlapped from clear astern after rule 13 no longer applied.


Note: Assuming P is not “limited” by rule 17, whether or not she broke rule 16.1 when she changed course will be decided by the protest committee based on its determination of whether P gave S enough space and time to cease her turn towards P and begin her turn away from P in a seamanlike way. If the collision was avoidable, P and/or S may be found to have broken rule 14; and if there was any damage or injury, P and/or S could get penalized under rule 14.


Table of Contents


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