Topsail
A topsail is a square sail mounted on a ship's topmast, which is the uppermost mast on a sailing vessel. It is used to increase the vessel's speed and improve maneuverability. Topsails come in different sizes and shapes, including course topsails, lower topsails, and topgallant topsails. They are typically made of canvas or other durable materials and are attached to the topmast with ropes or chains. Topsails are an important part of a ship's rigging and are used in conjunction with other sails to catch the wind and propel the vessel forward.
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