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Rigid wing sail

Name: Rigid wing sail dimension sheet
Creator: Xem Studio
License: https://creativecommons.org/licenses/by/4.0/

Why do some boats use rigid wing sails? · Standard part · basis: Design rules and figures from the cited sources; example geometry by Xem Studio

Also called: wing sail, wingsail, c class wing, america's cup wing, wing vs sail, rc wing sail, solid sail, two element wing sail

Exact dimensions. True size, with no printing tolerance added.

sizes: 1 in table

Notes

A wingsail is a rigid or semi-rigid airfoil with independently adjustable segments, like an aircraft wing with flaps. It gives more lift and better lift-to-drag than soft sails (Wikipedia).
At 30 deg apparent wind a wingsail works at ~10 deg angle of attack vs 15 deg for a jib and 20 deg for a mainsail. Drawbacks: it can't be reefed, must be removed ashore and costs more.
Used on: C Class Catamaran, USA-17.

Rigid wing sail size chart

parameter	value or range	source
AoA at 30 deg apparent wind	wing 10 deg; jib 15 deg; main 20 deg	Wikipedia (Wingsail)

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

Wikipedia

Wingsail

web

Publisher's page; dimensions are facts

Xem scan

File coming

No downloadable true-size file yet: the published figures do not fix the whole shape, and Xem never guesses a number. A measured scan is planned; request it and it moves up.

Let your AI pull this. Add https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.

Set it up →

Plain text: sheet.txt · JSON: /api/geometry?object=wing-sail

Schematic, not to scale.