a low-built long and narrow vessel, with one deck, propelled by oars and sails, and much used in the Mediterranean previous to the introduction of steam-boats. Galleys of the largest size were about 166 feet by 32 in breadth, with 26 or more pairs of oars. The rowers were usually either convicts or Turkish prisoners, who were chained to the benches on which they sat. The word galley is from the Latin *galea*, a helmet—a designation said to be derived from a kind of basket-work at the mast-head of the vessel.