The need for speed. One important aspect of a kayak that helps determine its maximum speed is the waterline length. As you can see with the Cooper (below), its long, thin hull is designed for speed. The Citibot (above) cannot boast the same maximum speed but is lighter and has a shorter turning radius. There always trade offs in design and this is one reason we built the Kayak Selector Tool, to help you determine which Folbot will meet your needs.
Back to the technical stuff…what is waterline length and what does it have to do with speed? Read this excerpt from Sea Kayaker Magazine.