1. A boat may be rolled to facilitate steering. Rock 6 Rock 7
2. a boat's crew may move thier 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. Rock 8 Rock 9 Basic 6 Basic 7
3. When surfing (rapidly accelerating down the front of a wave), planning or foiling is possible Pump 7 Pump 8 Pump 9 Pump 10 Pump 11 Pump 12
   1. to initiate surfing or planning, each sail may be pulled in only once for each wave or gust of wind, or
   2. to initiate foiling, each sail may be pulled in any number of times.
4. When a boat is above a close-hauled course and either stationary or moving slowly, she may scull to turn to a close-hauled course. Scull 1 Scull 2 Scull 3
5. 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.
6. A boat may reduce speed by repeatedly moving her helm.
7. Any means of propulsion may be used to help a person or another vessel in danger.
8. To get clear after grounding or colliding with a vessel or object, a boat may use force applied by her crew or the crew of the other vessel and any equipment other than a propulsion engine. However, the use of an engine may be permitted by rule 42.3(i).
9. Sailing instructions may, in stated circumstances, permit propulsion using an engine or any other method, provided the boat does not gain a significant advantage in the race

Note: Interpretations of rule 42 are available on the World Sailing website or by mail upon request.