I was flipping through ESPN the magazine and there was a blurb about the powerswim so I looked it up and it is a design being updated by the DARPA project to aid swimmers, mainly military SCUBA types, 3-4 times faster. Doesn’t look like it will soon be a mainstream toy for tri dorks.
A similar device designed 40 years ago was never adopted but allowed combat divers to drop their 1500 meter time from 45 minutes to 24 minutes which is motoring. It is called the aqueon invented by Calvin Gongwer.
For any combat divers out there I’ve found that if I’m not on the compass then I can swim very easily by doing the dolphin kick whereas I sometimes struggle and get tired with a regular scissor kick. So the dolphin kick must be more efficient. Looks like this device multiplies these movements.
Anyway this is all very interesting and if you want to do more reading, some links from google…
www.darpa.mil/dso/thrusts/bio/biologically/powerswim/index.htm
gizmodo.com/gadgets/military/darpas-powerswim-brings-out-the-aquaman-in-you-318195.php
www.scubaboard.com/forums/archive/index.php/index.php/t-197422.html