A sloop (from Dutch sloep, in turn from French chaloupe) is a sailing boat with a single mast and a fore-and-aft rig. A sloop has only one head-sail: if a vessel has two or more head-sails, the term 'cutter' is used, and its mast may be set further aft than on a sloop. In contrast, in the US a sloop may have one, two or three head-sails forward of the mast—the term cutter not generally being used for sailboats.