Hansa Sailing have documented a number of the safety and stability features of Hansa Sailing Boats.
A sailing dinghy has a centreboard to give it directional stability, while on a keelboat the centreboard can be fixed or locked down, with a lead ballast counterweight at the bottom which then acts to resist the force of wind in the sails, so also gives righting moment, which is resistance to capsize.
As the removable board on a Hansa must always be locked fully down to provide the required stability, it is called a keel and not a centreboard, and the boat is a keelboat, and not a dinghy. These are very important distinctions which define the safety and security of any sailboat, considering the purpose for which it was designed.
This is a must read for all Hansa sailors and program organisers!
DOWNLOAD the information sheet here.