Xem Studiomeasured geometryLibrary › Boat design › Sailboat appendages ·
Daggerboard
What is a daggerboard? · Standard part · basis: Design rules and figures from the cited sources; example geometry by Xem Studio
Also called: dagger board, daggerboard vs centreboard, catamaran daggerboard, dinghy daggerboard, daggerboard trunk, curved daggerboard, lifting foil
Exact dimensions. True size, with no printing tolerance added.
- sizes
- 2 in table
Notes
- A daggerboard is a removable foil that slides vertically through a trunk to give lateral resistance; it can be raised downwind or in shallow water to cut drag (Wikipedia).
- Long, thin boards give better lift-to-drag, but a daggerboard is usually damaged if it hits the bottom, whereas a pivoting centreboard can kick up (Wikipedia).
- Used on: Sunfish, Laser, Mirror Dinghy.
- The file is a reference example built by Xem Studio from the numbers above (Illustrative.). Sizes the sources do not fix are illustrative; scale the example to your own vehicle.
Daggerboard size chart
| parameter | value or range | source |
|---|---|---|
| Motion | slides vertically | Wikipedia (Daggerboard) |
| First curved daggerboard | 1985 (Ian Farrier) | Wikipedia (Daggerboard) |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| Wikipedia | Daggerboard | web | Publisher's page; dimensions are facts |
| Wikipedia | Centreboard | web | Publisher's page; dimensions are facts |
Free files
★ Free files 1 parts. Xem Studio design: free to use, print and sell things from; not to be republished as files. Xem Studio Design License. index.json
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.Plain text: sheet.txt · JSON: /api/geometry?object=daggerboard
Fits with
Questions
Daggerboard or centreboard?
Daggerboard slides; centreboard pivots and can kick up (Wikipedia).