Boom black band: Clew position legal - illegal
8 July 2026
Class rules say:
18.4
Boom Band: The boom shall carry an indelibly marked band of a colour strongly contrasting with the colour of the boom. The band shall not be less than 10mm wide. With the boom fitted on the gooseneck and at right angles to the mast, the distance between the downward projection of the aft edge of the mast, disregarding local projection or cut outs, and the forward edge of the band shall not exceed 2845mm. When racing, no part of the mainsail shall extend aft of the forward edge of this band.
18.4.1
A device is required to ensure compliance with Rule 18.4 (= boom stopper)
For clarity how it should be measured: photos by Andy W
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Sail position legal |
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Sail position illegal! |
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Not measured correctly! |
When installing the boom stoppers, keep in mind that the sliders may differ depending on the sail brand! Maybe there's tolerance even on the same brand ...
upper sail P&B, the one below North
