Part 4
OTHER REQUIREMENTS WHEN RACING
42.2
Prohibited Actions Without limiting the application of rule 42.1, these actions are prohibited: (a) (b) pumping: repeated fanning of any sail either by pulling in and releasing the sail or by vertical or athwartship body movement; rocking: repeated rolling of the boat, induced by (1) (2) (3) (c) (d) body movement, repeated adjustment of the sails or centreboard, or steering;
ooching: sudden forward body movement, stopped abruptly; sculling: repeated movement of the helm that is either forceful or that propels the boat forward or prevents her from moving astern; repeated tacks or gybes unrelated to changes in the wind or to tactical considerations.
(e) 42.3
Exceptions (a) (b) A boat may be rolled to facilitate steering. A boat’s crew may move their bodies to exaggerate the rolling that facilitates steering the boat through a tack or a gybe, provided that, just after the tack or gybe is completed, the boat’s speed is not greater than it would have been in the absence of the tack or gybe. Except on a beat to windward, when surfing (rapidly accelerating down the front of a wave) or planing is possible, the boat’s crew may pull in any sail in order to initiate surfing or planing, but each sail may be pulled in only once for each wave or gust of wind. When a boat is above a close-hauled course and either stationary or moving slowly, she may scull to turn to a closehauled course. If a batten is inverted, the boat’s crew may pump the sail until the batten is no longer inverted. This action is not permitted if it clearly propels the boat. A boat may reduce speed by repeatedly moving her helm.
(c)
(d)
(e)
(f)
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