The biggest anchor chains are massive steel links used to secure large ships and oil rigs. These chains can weigh several tons per meter and withstand extreme ocean forces. Their durability and strength are critical for anchoring vessels in deep waters.

The biggest anchor chains typically used in maritime applications have the following key specifications and technical properties:

Size: Diameter ranges from 84mm to 180mm (Grade 3) or larger for ultra-large vessels.

Grade: Common grades include Grade 2, Grade 3, and Grade 4, with Grade 3 being the most widely used for heavy-duty applications.

Viscosity: Not applicable (anchor chains are solid metal links).

Buoyancy: Negative buoyancy (sinks in water due to high-density steel construction).

Material: High-tensile carbon steel or alloy steel, often with galvanized or painted coatings for corrosion resistance.

Breaking Load: Ranges from 1,500 kN to over 10,000 kN depending on chain size and grade.

Proof Load: Typically 50-70% of the breaking load for testing purposes.

Link Length: Standard link length is 6 times the diameter of the chain.

Weight: Approximately 150 kg/m to 500 kg/m for large chains.

Corrosion Resistance: Enhanced through galvanization, epoxy coatings, or sacrificial anodes.