A capstan is a rotating machine used to apply force to ropes, cables, or chains, primarily for lifting or moving heavy objects. It consists of a vertical drum that can be turned by a handle or motor, allowing operators to wind the rope around it. Capstans are commonly found on ships, where they help in anchoring and mooring operations. In addition to maritime use, capstans are also utilized in construction and industrial settings. They can be powered manually or by electric motors, making them versatile tools for various applications. Their design allows for efficient handling of heavy loads with minimal effort.