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202 UNDE R S TANDING THE RAC ING RUL E S OF SAI L ING THROUGH 2 0 2 4


The concept in this rule is to improve the racing by trying to minimize the frustrating and sometimes dangerous congestion that can occur at crowded windward mark roundings when the mark is to be left to port. Problems are often caused by port-tack boats approaching on or near the port layline and trying to squeeze their boats in between the starboard-tack boats on the star- board layline and the mark. Too often, these port-tackers shoot right back up after tacking to try to make it around the mark, or they get hung up on the mark itself, or worse: they fall back onto port tack directly in front of the approaching starboard-tackers! Too many otherwise excellent close races have been ruined by these actions; and with the popular trend toward shorter courses and more races, the rule writers put this rule in the book to improve the game.


In a nutshell, rule 18.3 works like this (we’ll get into the technicalities below):


If you are approaching a port-hand windward mark on port tack (which can include the port end of a windward finishing line) and tack in the zone near a starboard-tack boat (S) that has been on starboard tack since entering the zone, you must do it in a place that allows S to round or pass the mark without ever having to sail above close-hauled to avoid contact with you or another boat. Furthermore, if S gets an inside overlap on you at any time during her round-


ing or passing maneuver, you must give her mark-room(roomto round or pass the mark). And if you are unable to do so, tough luck on you. Rule 18.2(f) (about not having to give mark-roomif unable to do so) does not apply because none of rule 18.2 (Giving Mark-Room) applies when rule 18.3 applies. Furthermore if S breaks rules 15 (Acquiring Right of Way) or 16 (Changing Course) while taking mark-room, she is exonerated under rule 43 (Exoneration). In other words, you are more or less a “sitting duck” for S! The bottom line is: if you are going to come into a crowded windward mark


on port tack, it is better to cross nearby starboard tackers if you can, and tack safely to windward of them. And if you can’t cross them, then it is better to duck them than to try to tack close to leeward of them (lee-bow them). And to be safe, approach the mark four or more boat lengths below the port-tack layline so your tack to starboard tack is outside the zone.


“Okay, I’m ready to have you lead me through this rule!”


OK, let’s consider just two boats to begin with. First, rule 18.3 only applies at a windward mark to be left to port (which can include a finishing mark).


Table of Contents


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