Centreboard — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/centreboard/  (sheet CC BY 4.0; files Xem Studio Design License, https://xemstudio.com/license/)
Basis: Design rules and figures from the cited sources; example geometry by Xem Studio
Catalog version: 2026-10-20

Sizes: see table below
- A centreboard pivots out of a slot in the hull; lowering it adds lateral lift, raising it reduces drag and allows shallow water and trailering (Wikipedia).
- It is more complex than a fixed keel and its case adds drag and takes interior space (Wikipedia).
- 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.

parameter  value or range  source
Motion  pivots  Wikipedia (Centreboard)

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Wikipedia: Centreboard — web — Publisher's page; dimensions are facts — https://en.wikipedia.org/wiki/Centreboard
- Wikipedia: Daggerboard — web — Publisher's page; dimensions are facts — https://en.wikipedia.org/wiki/Daggerboard

Free files (Xem Studio Design License, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/centreboard/index.json
API: https://xemstudio.com/api/geometry?object=centreboard