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→Reserve Buoyancy
Freeboard, the distance from the waterline to the edge of the highest watertight deck amidships, is a rough measure of reserve buoyancy. Typically buoyancy is lost when the edge of the freeboard meets the water.
Freeboard plus draft is the total height of the hull. A generous freeboard gives lots of headroom inside, and makes it easier to recover from a knockdown. Too much freeboard makes a boat tippy.The combination of extremely wide beam and low freeboard is dangerous.<ref>http://www.brayyachtdesign.bc.ca/Stability.pdf</ref>
== Roll Stability ==