Tag Archives: Bill Beran

lemniscate hull

The Lemniscate Hull

A Chineless Gull Wing

By Bill Beran

I built this 16′ runabout in my garage over the course of a few years. It was the culmination of an idea I long had for a design that would provide a soft ride with its deep-vee hull, but at the same time exhibit excellent fuel economy. It’s best described as a chineless gull wing. The hull shape captures and efficiently redirects otherwise wasted bow wave energy downward to create lift. It also safely captures ram air under the “wings” (noticeable starting about 40 mph) and attains a comfortable top speed close to 50 mph with the 115hp outboard motor. Continue reading