Sheave
A sheave is a grooved wheel or pulley used in ships to change the direction of a cable or rope. It is typically made of metal or hard plastic and is mounted on a shaft or pin. Sheaves are used in various applications on a ship, such as in the rigging system to hoist sails or lift heavy loads, or in the steering system to control the movement of the rudder. The size and number of sheaves used depend on the load and the angle of the cable or rope. Proper maintenance of sheaves is important to ensure their smooth operation and prevent wear and tear.
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