Match Race Call G5
Rule 10; On Opposite Tacks
Rule 11; On the Same Tack, Overlapped
Definitions; Tack, Starboard or Port
A boat sailing downwind changes tack when her mainsail crosses the boat's centerline and her mainsail would remain on that side of the boat if unrestrained.
Situation 1
Yellow is a leeward boat subject to rule 17. She is sailing her proper course, which is nearly 140° from the true wind angle. Blue is keeping clear. From position 1 to position 3, Yellow pulls the boom across the centreline to the starboard side of the boat, and almost immediately pulls the boom back across the centreline to the port side of the boat. The force of the pulling action back to the port side causes the mainsail to completely fill in position 2.
Question 1a
Does Yellow change tack in position 2?
Answer 1a
No. Yellow’s windward side does not change. She never sails by the lee and at no time would her mainsail lie on her starboard side if unrestrained.
Question 1b
Does Yellow gybe between positions 2 and 3?
Answer 1b
Yes. Yellow gybes twice as the foot of her mainsail crosses her centreline twice.
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