SAIL - - Boat Works / Ask Sail -

Q: When I see photographs of race­boats, I no­tice all kinds of wrin­kles in their main­sails. This is true even of small boats like Lasers at the Olympic level. How is it that th­ese wrin­kles don’t af­fect the aero­dy­nam­ics of the sail? Surely it must slow them down, es­pe­cially go­ing to wind­ward. Ken­neth Jenk­ins, Hori­con, WI

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