A term used as stated below is shown in hyperlinked type or, in preambles, in bold italic type.
Abandon -- A race that a race committee or protest committee abandons is void but may be resailed.
Capsized -- A sailboard is capsized when her sail or the competitor's body is in the water.
Clear Astern and Clear Ahead; Overlap -- One boat is clear astern of another when her hull and equipment in normal position are behind a line abeam from the aftermost point of the other boat¹s hull and equipment in normal position. The other boat is clear ahead. They overlap when neither is clear astern or when a boat between them overlaps both. These terms do not apply to boats on opposite tacks unless rule 18 applies.
Finish -- A boat finishes when any part of her hull, or crew or equipment in normal position, crosses the finishing line in the direction of the course from the last mark either for the first time or, if she takes a penalty, after complying with rule 31.2 or rule 44.2.
Interested Party -- A person who may gain or lose as a result of a protest committee¹s decision, or who has a close personal interest in the decision.
Keep Clear -- One boat keeps clear of another if the other can sail her course with no need to take avoiding action and, when the boats are overlapped on the same tack, if the leeward boat can change course in both directions without immediately making contact with the windward boat.
Leeward and Windward -- A boat¹s leeward side is the side that is or, when she is head to wind, was away from the wind. However, when sailing by the lee or directly downwind, her leeward side is the side on which her mainsail lies. The other side is her windward side. When two boats on the same tack overlap, the one on the leeward side of the other is the leeward boat. The other is the windward boat.
Mark -- An object the sailing instructions require a boat to pass on a specified side, excluding its anchor line and objects attached temporarily or accidentally.
Obstruction -- An object that a boat could not pass without changing course substantially, if she were sailing directly towards it and one of her hull lengths from it. An object that can be safely passed on only one side and an area so designated by the sailing instructions are also obstructions. However, a boat racing is not an obstruction to other boats unless they are required to keep clear of her, give her room or, if rule 21 applies, avoid her.
Overlap See Clear Astern and Clear Ahead; Overlap.
Party A party to a hearing: a protestor; a protestee; a boat requesting redress; any other boat or a competitor liable to be penalized, including under rule 69.1; a race committee in a hearing under rule 62.1(a).
Postpone -- A postponed race is delayed before its scheduled start but may be started or abandoned later.
Proper Course -- 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.
Protest -- An allegation by a boat, a race committee or a protest committee that a boat has broken a rule.
Racing -- A boat is racing from her preparatory signal until she finishes and clears the finishing line and marks or retires, or until the race committee signals a general recall, postponement, or abandonment.
Recovering -- A sailboard is recovering from the time her sail or, when water-starting, the competitor's body is out of the water until she has steerage way.
Room -- The space a boat needs in the existing conditions while manoeuvring promptly in a seamanlike way.
Rule -- (a) The rules in this book,
including the Definitions, Race Signals, Introduction, preambles, and the rules
of an appendix when it applies, but not titles;
(b) the prescriptions of a national authority, when they apply;
(c) the sailing instructions;
(d) the class rules except any that conflict with the rules in this book;
(e) any other documents governing the event.
Start -- A boat starts when after her starting signal any part of her hull, crew or equipment first crosses the starting line and she has complied with rule 29.1 and rule 30.1 if it applies.
Tack, Starboard or Port -- A boat is on the tack, starboard or port, corresponding to her windward side.
Two-Length Zone -- The area around a mark or obstruction within a distance of two hull lengths of the boat nearer to it.
Windward See Leeward and Windward .