Marine Hull Survey involves assessing the condition of a vessel's hull to ensure structural integrity and safety. Underwater Hull Inspection is a specialized part of this survey, conducted below the waterline to detect damage, corrosion, or fouling. These inspections are critical for compliance, maintenance, and operational efficiency of ships.

Marine Hull Survey and Underwater Hull Inspection specifications include:

Size: Typically covers vessel lengths from 10m to 400m+.

Grade: Compliance with IACS, ISO 20860, and class society standards (e.g., ABS, DNV, LR).

Viscosity: N/A (applies to coatings/anti-fouling, not inspection).

Buoyancy: ROVs/UAVs may have buoyancy ratings of 5kg to 50kg depending on depth.

Material: Hulls inspected are typically steel (AH36/DH36), aluminum, or composite; tools include carbon fiber ROVs.

Depth Rating: Inspections conducted up to 3000m for deep-sea vessels.

Coating Thickness: 200–500µm for anti-corrosive paints.

Resolution: HD/4K cameras (12MP–20MP) for imaging.