Anchor Chain Marking Colours in Midway Islands, Changing Impeller On Inboard - Anchor Chains

Anchor chain marking colors indicate the length of chain deployed, typically using white, red, blue, and yellow paint. Each color represents a specific chain length, such as 30 meters (white) or 90 meters (blue). These markings help sailors monitor and control anchor deployment accurately.

Anchor Chain Marking Colours: Typically painted in white, yellow, blue, red, or green at specific intervals (e.g., every 90 feet) to indicate chain length. Colours may vary by manufacturer or standard.

Anchor Chain Size: Common diameters range from 12.5 mm to 152 mm (0.5 inches to 6 inches), depending on vessel size and classification society requirements.

Anchor Chain Grade: Grades include Grade 1, Grade 2, Grade 3 (higher tensile strength), and special grades like K3, K4, or R3, R4, R5 (per ISO 1704 or other standards).

Anchor Chain Material: Typically made of high-tensile steel, often galvanized for corrosion resistance. Some chains use alloy steel for higher strength.

Anchor Chain Viscosity: Not applicable; chains are solid steel with no fluid properties.

Anchor Chain Buoyancy: Negative buoyancy; steel chains sink in water due to high density. Buoyancy aids (floats) may be added for specific applications.

Anchor Chain Length: Standard shots are 27.5 meters (90 feet), with multiple shots connected for full anchor rode.

Anchor Chain Weight: Varies by size and grade; e.g., a 25mm Grade 2 chain weighs approximately 12.5 kg/m.

Anchor Chain Proof Load: Minimum breaking force varies by grade; e.g., Grade 3 has higher proof load than Grade 2.

Anchor Chain Certification: Must comply with classification society standards (e.g., ABS, DNV, LR, or ISO 1704).