The meanings of visual and sound signals are stated below. An arrow pointing up or down ( ¯ ) means that a visual signal is displayed or removed. A dot ( · ) means a sound; five short dashes (– – – – –) mean repetitive sounds; a long dash (—) means a long sound. When a visual signal is displayed over a class flag, fleet flag, event flag or race area flag, the signal applies only to that class, fleet, event or race area.
Postponement Signals
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AP Races not started are postponed. The warning signal will be made 1 minute after removal unless at that time the race is postponed again or abandoned.
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AP over H Races not started are postponed. Further signals ashore.
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AP over A Races not started are postponed. No more racing today.
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AP over a Numeral Pennant 1–9
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Postponement of 1-9 hours from the scheduled starting time.
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Abandonment Signals
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N All races in progress are abandoned. Return to the starting area. The warning signal will be made 1 minute after removal unless at that time the race is abandoned again or postponed.
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N Over H All races in progress are abandoned. Further signals ashore.
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N over A All races in progress are abandoned. No more racing today.
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Preparatory Signals

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P Preparatory signal.
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I Rule 30.1 is in effect.
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Z Rule 30.2 is in effect.
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U Rule 30.3 is in effect.
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Black flag. Rule 30.4 is in effect.
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Recall Signals
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Shorten Course
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X Individual recall.
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First Substitute General recall. The warning signal will be made 1 minute after removal.
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S The course has been shortened. Rule 32.2 is in effect.
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Changing the Next Leg

Other Signals
