A foresail is one of a few different types of sail set on the foremost mast (foremast) of a sailing vessel: * A fore-and-aft sail set on the foremast of a schooner or similar vessel. * The lowest square sail on the foremast of a full-rigged ship or other vessel which is square-rigged. Sails set forward of the mainmast, such as jibs and staysails, are sometimes referred to as foresails, although "headsails" is a more common term, headsail can also specifically refer to the sail on a forestay that connects directly to the head of the mast.