Capstan Screw

A capstan screw, also known as a capstan or screw capstan, is a type of mechanical device used to lift or move heavy objects. It consists of a rotating cylinder, or drum, around which a rope or chain is wound. As the drum turns, it pulls the rope, creating tension and allowing operators to lift or pull loads with greater ease. Commonly used in ship anchoring and mooring, capstan screws provide a practical way to manage heavy loads without requiring excessive manual effort, making tasks like raising sails or adjusting lines more efficient.