I used to have a R/C catamaran with twin screws. It was battery powered and clocked at around 30 mph. It was long though, 34", myself and my father built it from a kit which we highly modified. I use to take it out to the pond in front of my parents home and subdivision, only on the windiest days to see what kind of air I could get. I had it shipped to me in Japan when I was stationed there, but it arrived it too many pieces to count. Too bad, I missed that boat and the good times. I might get another, and was looking at a R/C sub as well, I might have to look into that further, especially one with video.
