Hot Tub Boat

Robert writes – ” About a year ago my fiance and I bought a run-down houseboat in Seattle. Knowing that there would be many painful construction days ahead we decided to first equip our house with a floating hot tub. Starting with only a picture-book understanding of marine engineering, used materials from craigslist, and some amount of luck we built a 23′ hot tub boat for 4 people…” – Link.

Related:

• Homemade hot tub – Link.
• HOW TO – Make an Op-Amp hot tub temperature controller – Link.