Yardarm
Yardarm is a horizontal spar that is attached to the mast of a sailing vessel. It is used to support and control the square sails on the ship. The yardarm is an important part of the rigging system and is used to adjust the angle of the sails to catch the wind. It is also used to control the tension of the sail and to trim the sail to optimize the ship's speed and direction. The yardarm is typically made of wood or metal and is secured to the mast with ropes or chains. It is an essential component of a sailing vessel's rigging system.
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