Definitions
updated: 21 November 2024

A term used as stated below is shown in italic type or, in preambles, in bold italic type. The meaning of several other terms is given in Terminology in the Introduction.

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Abandon  A race that a race committee or protest committee abandons is void but may be re-sailed.

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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 boat's hull and equipment in normal position. The other boat is clear ahead. They overlap when neither is clear astern. However, they also overlap when a boat between them overlaps both. These terms always apply to boats on the same tack. They apply to boats on opposite tacks only when rule 18 applies between them or when both boats are sailing more than ninety degrees from the true wind.

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Conflict of Interest   A conflict of interest exists if a person

(a) may gain or lose as a result of a decision to which that person

contributes,

(b) may reasonably appear to have a personal or financial interest which

could affect that persons ability to be impartial, or

(c) has a close personal interest in a decision.



Continuing Obstruction   An obstruction is a continuing obstruction when

the boat with the shortest hull referred to in the rule using the term will pass

alongside it for at least three of her hull lengths. However, the following are

not a continuing obstruction: a vessel under way, a boat racing, or a race

committee vessel that is also a mark.


Fetching  A boat is fetching a mark when she is in a position to pass to windward of it and leave it on the required side without changing tack.

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Finish   A boat finishes when, after her starting signal, any part of her hull crosses the finishing line from the course side. However, she has not finished if after crossing the finishing line she

(a) takes a penalty under rule 44.2,

(b) corrects an error in sailing the course made at the line, or

(c) continues to sail the course.

After finishing she need not cross the finishing line completely. The sailing

instructions may change the direction in which boats are required to cross the

finishing line to finish.

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Keep Clear   A boat keeps clear of a right-of-way boat
(a) if the right-of-way boat can sail her course with no need to take avoiding action and,
(b) when the boats are overlapped, if the right-of-way boat can also change course in both directions without immediately making contact.

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Leeward and Windward A boat's 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.

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Mark An object the sailing instructions require a boat to leave on a specified side, a race committee vessel surrounded by navigable water from which the starting or finishing line extends, and an object intentionally attached to the object or vessel. However, an anchor line is not part of the mark.

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Mark-Room   Room for a boat

(a) to sail to the mark when her proper course is to sail close to it,

(b) to round or pass the mark on the required side, and

(c) to leave it astern.

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Obstruction   An obstruction is

(a) 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;

(b) an object that is so designated in a rule;

(c) an object that can be safely passed on only one side; or

(d) an area or line in a rule that boats are prohibited from entering or

crossing.

However, a boat racing is not an obstruction to other boats unless they are

required to keep clear of her or, if rule 22 applies, avoid her. A vessel under

way, including a boat racing, is never a continuing obstruction.

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Overlap See Clear Astern and Clear Ahead; Overlap.

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Party   A party to a hearing is

(a) for a protest hearing: a protestor, a protestee;

(b) for a redress hearing: a boat requesting redress or for which redress is

requested; a boat for which a hearing is called to consider redress under

rule 61.1; a committee;

(c) for a redress hearing under rule 61.4(b)(1: the body alleged to

have made an improper action or omission;

(d) a person against whom an allegation of a breach of rule 69.1(a) is

made; a person presenting an allegation under rule 69.2(e)(1);

(e) a support person subject to a hearing under rule 62 or 69; any

boat that person supports; a person appointed to present an allegation

under rule 62.2.

However, the protest committee is never a party.

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Postpone  A postponed race is delayed before its scheduled start but may be started or abandoned later.

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Proper Course   A course a boat would choose in order to complete the leg she believes she is on 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.

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Protest  An allegation made under rule 60 by a boat, or a committee that a boat has broken a rule.

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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.

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Room  The space a boat needs in the existing conditions, including space to comply with her obligations under the rules of Part 2 and rule 31, while manoeuvering promptly in a seamanlike way.

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Rule

(a) The rules in this book, including the Definitions, Race Signals,

Introduction, preambles and the rules of relevant appendices, but not

the Basic Principles or titles;
(b) World Sailing Regulations that have been designated by World Sailing as having the status of a rule and are published on the World Sailing website;
(c) the prescriptions of the national authority, unless they are changed by the notice of race or sailing instructions in compliance with the national authority’s prescription, if any, to rule 88.2;
(d) the class rules (for a boat racing under a handicap or rating system, the rules of that system are ‘class rules’);
(e) the notice of race;
(f) the sailing instructions; and
(g) any other documents that govern the event.

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Sail the Course   A boat sails the course when

(a) she starts;

(b) a string representing her track until she finishes, when drawn taut,

(1) passes each mark of the course for the race on the required side

and in the correct order (including the starting marks),

(2) touches each mark designated in the sailing instructions to be a

rounding mark, and

(3) passes between the marks of a gate from the direction of the

course from the previous mark; and then

(c) she finishes.

A mark that does not begin, bound or end the leg the boat is sailing does not

have a required side.

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Start   A boat starts when, her hull having been entirely on the pre-start side of the starting line at or after her starting signal, and having complied with rule 30.1 if it applies, any part of her hull crosses the starting line from the pre-start side to the course side.

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Support Person    Any person who
(a) provides, or may provide, physical or advisory support to a competitor, including any coach, trainer, manager, team staff, medic, paramedic or any other person working with, treating or assisting a competitor in or preparing for the competition, or
(b) is the parent or guardian of a competitor
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Tack, Starboard or Port  A boat is on the tack, starboard or port, corresponding to her windward side.

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Windward  See Leeward and Windward

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Zone  The area around a mark within a distance of three hull lengths of the boat nearer to it. A boat is in the zone when any part of her hull is in the zone.

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Fundamental Rules
Part 2 - When Boats Meet
Part 2A - Right of Way
Part 2B - General Limitations
Part 2C - At Marks and Obstructions
Part 2D - Other Rules
Part 3- Conduct of a Race
Part 4 - Other Requirements When Racing
Part 5A - Protests
Part 5B - Hearings and Decisions
Part 5C - Gross Misconduct
Part 5D - Appeals

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