There are many different kinds of boats and each boat has different buoyancy, pressure and explains how it floats in water. Some boats are really big and others are small, but they all have one thing in common. the thing that they all have in common in they all have pressure and they all have pressure. Buoyancy is the ability to float in water and pressure is the physical force exerted on or against the object by something in contact. The type of boat is woodenexternal image electric-launch-05.jpgexternal image terrier_wc_2.jpgelectric-launch-05.jpgimage004.jpg