The terms below are but a few useful measurements that go into the kayak design 'recipe'. All the terms here are used in the 'Technical Specifications' of One Ocean Kayak designs . It is the amount that the kayak is submerged in the water. . This means that the kayak will be submerged more in fresh water. In practical terms, this is of no consequence.
Salt water is used for all calculations.
The center of the displaced volume is called a 'centroid' but LCB is just the x direction component of its coordinates. The center of buoyancy as an imaginary focus of all vertical forces that keep the kayak afloat. Its counterpart, the LCG, is the focus of all loads that push the kayak down. Under normal conditions and In the absence of other forces LCB and LCG are in balance or equilibrium. Swede hullforms displace water more efficiently, reducing the effect of wave resistance and are therefore faster, especially at higher cruising and racing speeds.