An anchor chain is a heavy-duty chain used to secure a ship or boat to the seabed. It connects the anchor to the vessel, allowing it to hold its position in water. The chain is designed to withstand the forces of wind and waves, ensuring the vessel remains stable. Typically made of steel, anchor chains come in various sizes and lengths, depending on the size of the vessel and the conditions in which it operates. The links are often shaped to provide strength and flexibility, making it easier to deploy and retrieve the anchor when needed.