Magnum
RIP
Saw one of these at the Palma show - cross between a jetski and a Sea-Doo sea scooter. In fact more like the latter as battery driven. However this puppy will do 12.4mph and dive down 40m /forums/images/graemlins/shocked.gif
Take a look at this great video. Full website here.
Weighs over 60KG though so might be tricky getting it out of the water. What do you think?