Emergency anchor salvage involves retrieving lost or stuck anchors and chains from underwater. Specialized teams use equipment like grapnels, ROVs, or divers to locate and recover the anchor. The process ensures safe navigation and prevents hazards to marine traffic.

Size: Typically ranges from 50 kg to 20,000 kg, depending on vessel size and anchor type.

Grade: Common chain grades include Grade 2, Grade 3, and High-Test (Grade 30), with tensile strengths from 490 MPa to 900 MPa.

Viscosity: N/A (not applicable for solid anchor and chain components).

Buoyancy: Anchors are non-buoyant; recovery systems may use buoyancy aids (e.g., lift bags with 500 kg to 10,000 kg capacity).

Material: Anchors and chains are typically made of high-strength steel (e.g., carbon steel or alloy steel), often galvanized for corrosion resistance.

Chain Diameter: Ranges from 10 mm to 150 mm, depending on vessel requirements.

Shackle Strength: Matching grade to chain, with working load limits (WLL) from 1 ton to 500+ tons.

Corrosion Protection: Hot-dip galvanizing or specialized coatings for saltwater resistance.

Recovery Equipment: Hydraulic winches (5-ton to 100-ton capacity), grapnels, and ROVs for deep-water salvage.

Anchor Types: Stockless, Hall, Danforth, or plow-style, with weights tailored to seabed conditions.