Sailboats are propelled partly or entirely by sails and include a variety of types from cutters to sloops and catboats to schooners. Traditionally sailboats are monohull displacement hulls, but catamarans and multi-hulls are becoming more common.
There are many kinds of sailboats and they carry different rigs (masts, supporting shrouds and stay, and sail combinations). Sloops have one mast and generally two sails – a mainsail and a headsail called a jib or genoa. If there are two headsails, the boat is usually called a cutter rig. Ketches have two masts with the aft mast shorter than the main mast. Yawls also have a shorter aft mast but it’s farther back on deck than a ketch. A schooner can have two or three masts with the forward-most one being shorter.