Cardboard boats sink or swim with Cole Harbour students

Barwise students test cardboard boats in annual event

Dive Boat Etiquette – From Yachts to rubber ducks

When a ship runs out of fuel, will it continue to float in the sea? - Quora

Sink or Swim! - The Cardboard Boat Race - Chestertown Spy

American Red Cross Swimming and Water Safety Handbook

2019's Annual CPS Cardboard Boat Race

Cardboard boats race across school pool

Cardboard boats race across school pool

How to Build a Cardboard Boat - Fun Science Project for Kids