• The Perry Regatta



    Boats come in all shapes, sizes and colors! Some even have trouble going the same direction as others. Have you ever wondered how a large supertanker filled with oil can float?  Objects submerged in a fluid such as water appear to weigh less than they do when they are not in water.  The liquid exerts a buoyant force on the object.


    Archimedes is credited with discovering that the buoyant force on an object is equal to the weight of the displaced fluid. He is said to have discovered this principle in his bath while trying to think of a way to determine whether the king’s new crown was gold or fake.  Legend says that he ran naked through the streets shouting, “EUREKA!””


    Archimedes Principle also applies to floating objects.  An object floats on a liquid if its density is less than that of the fluid. For our supertanker to float it must displace a volume of water equal to its own weight.



    -          To build a boat out of only cardboard and tape capable of holding two people that can be launched and paddled across the pool.

    -          Apply Archimedes’ Principle to your design.

    -          Use the design process to complete this task.



    1.      Only cardboard and tape may be used to construct the boat.

    2.      Only corrugated cardboard will be allowed. The maximum allowable thickness of the corrugated cardboard is ½“.

    3.      You may NOT use any other objects to contribute to the structural rigidity or the craft’s floatation ability.

    4.      You may only use duct tape.  No reinforced fiber packaging tape will be allowed.  Example of tape will be shown in class. NO GLUE!