the concepts
http://www.thedesignblog.org/entry/marine-vehicle-thats-breaking-all-barriers-in-water-sports/
http://www.thedesignblog.org/entry/pontoon-solar-powered-party-boat-is-inexpensive-yet-luxurious/
this is true ! ;D
http://www.toxel.com/tech/2010/03/26/speedboat-doubles-as-a-submarine/
http://www.thedesignblog.org/entry/marine-vehicle-thats-breaking-all-barriers-in-water-sports/
http://www.thedesignblog.org/entry/pontoon-solar-powered-party-boat-is-inexpensive-yet-luxurious/
this is true ! ;D
http://www.toxel.com/tech/2010/03/26/speedboat-doubles-as-a-submarine/