Some months ago I volunteered to make a video of the 9th international sub races. The boats are free-flooding and human powered. Great fun, and a real educational tool for the kids. I had to break the movie into a number of short segments to post it on Youtube. Sorry for the low resolution, also a Youtube posting necessity.
http://www.youtube.com/watch?v=xL8UCPPAWEQ
http://www.youtube.com/watch?v=47ph4f4kJrw
http://www.youtube.com/watch?v=5MayiqdNPPU
http://www.youtube.com/watch?v=8SkV6i1Wy_g
http://www.youtube.com/watch?v=lweCfn-Lv-c
http://www.youtube.com/watch?v=gEvvc-UrjIY
Enjoy,
Alec