Ship parts are essential components of a ship that help it to move and stay afloat. The MASTS are tall structures that support the sails and provide stability. The keels are long, flat pieces of wood or metal that run along the bottom of the ship and provide balance. The prows are the pointed front ends of the ship that cut through the water. The sterns are the back ends of the ship that provide propulsion. All of these parts work together to make a ship seaworthy.