We built a boat out of expanding foam, will it float?

flotation/insulation foam under floor get soggy with water

Summer projects: Adding more flotation to your trailer boat

Inflatable boat repair with expanding foam

Power Wheels 18v mini boat!

The Truth About Unsinkable Boats

Urethane Expanding Foams - Composite Envisions

Working With Two Part Expandable Urethane Foam

Boat from Styrofoam and filling foam

Boat Foam: Polyurethane Pour Flotation Foam for Insulation 10

Magnetohydrodynamic Drive