Cardboard and Duct Tape Boat

This is actually one of my more functional projects. The Cardboard and duct tape boat idea was first brought up by my physics professor, who was going to cancel the project for that year because they've never had a single person in all their time teaching actually cross the entire pool without sinking. They showed me picture #4 and said that's the only design anyone ever comes up with within the week allotted to make the boat; A folded cardboard box completely wrapped in layers of duct tape. So I did what I do best and I made a bet with that teacher. I said, "I bet I could make a boat that would get all the way across, leak less than 1% of the water it had displaced by the end, and I'd do it all with less than 15 yards of tape, and if I won I got an A+(had a C at the time). She took that bet but said I, the heaviest member of the group, had to be the passenger. About 6 hours of measuring, modeling, and laser cutting later, we had all the pieces required to build the boat, and spent the next 2 class days assembling it. Needless to say, I was the only person to make it across the pool and get that sweet sweet A+, and the best part was that after a few hours of drying in the sun, our boat still works.