A marine chain stopper, also known as a chain claw or chain stopper, is a critical device used in a ship’s anchoring system. Its primary function is to secure the anchor chain and bear the load of the anchor, thereby relieving the strain on the windlass after the anchor is deployed. By locking the anchor chain in place, the chain stopper ensures that the anchor remains securely in place, even in rough seas or weather conditions. Marine chain stoppers are typically made of high-strength, corrosion-resistant materials such as stainless steel or marine-grade alloys, and are designed to withstand the constant exposure to seawater and the enormous loads generated by the weight of the anchor and chain. There are various types of chain stoppers, including rod-type chain stoppers, guillotine-type chain stoppers, and roller-type chain stoppers, each of which is suitable for different chain sizes and vessel types. Equipped with a locking mechanism that prevents the chain from slipping off, the chain stopper provides additional security during anchoring operations. It also protects the windlass from damage by bearing the weight of the anchor when the vessel is at anchor. Marine chain stoppers are certified to international maritime safety standards and are essential to ensure safe, efficient and reliable anchoring operations for vessels ranging from cargo ships to offshore platforms.