A chain stopper is a device used on a ship to secure the anchor chain and prevent it from slipping or moving. It usually consists of a thick bar or pad that is attached to the ship's deck or hull, and a chain hook that grips the chain links. The chain is then locked into place by tightening a nut or bolt on the hook, creating a secure hold that can withstand the forces of wind and waves. Chain stoppers are important safety devices that help prevent accidents and damage to the ship and its crew.
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