First Human Scale Prototype of the Fin Craft

These is the historic web site for the first human scale prototype of the Fin CraftTM by Martin Garthwaite This work developed into the fishBOOT and fishBOAT.

This is a revolutionary undulating watercraft.  The goal is not high speed, but high efficiency. Long term, Martin sees this as a human-powered watercraft and, on an industrial scale, as a tug boat.  Replace the person with a diesel hammer (seen at construction sites hammering in pilings -- can also be electric, steam, etc.) and scale the craft up to make a high-efficiency tug boat.

Here's the first prototype, "Flipper," on the shore. The operator stands on the platform and oscillates gently up and down (about once every two seconds).  The oscillations are communicated to forward pectoral fins and a rear fluke.  Oscillation of the fins and fluke produces thrust.

The craft is stable and fairly easy to operate.

Video of the first "bobs" with pectorals and fluke.  It worked!

First bobs

Cruising like a humpback. The white bar holds steering cables.

Cruising on the fishboat.

From certain angles, the operator appears to "float" over the water.

Information regarding work on the human scale prototype can be found here.

It takes about 40,000 gallons of diesel for a tug boat to pull a barge from Seattle to Alaska.  A diesel-hammer version of the Fin CraftTM could reduce fuel consumption by 25% (or more).  In addition, the Fin Craft would be less expensive to build and would have lower maintenance and down-time.

An interesting diesel-hammer company in Washington state is American Piledriving Equipment.

Photos of the human scale prototype can be found here.