Prismatic Coefficient

Posted by Howard on Mar 21, 2005

That pretty much right lee.

Since its a pretty useful term...i thought i would spell it out for folks.

primatic coefficient refers to the volume of the hull underwater divided by a volume number calculated by taking the midship section area underwater X the length water line.

a hull that is shaped like a log or a rectangular block has a prismatic coefficient of 1. kayaks tend to be in the range of .5 to .7.

Typically a low number is associated with more "pointy" designs. A high primsmatic coeficinet would be associated with boats that have their volume equally distributed througout the hull.

given the same waterline length, the high prismatic coefficient boat will be supporting a lot more weight than a pointy boat.

In Response to: Re: Sassafras 16 Capacity by LeeG on Mar 21, 2005