Underwater propeller inspection involves examining the propeller's condition while submerged, typically for ships or submarines. It checks for damage, corrosion, or fouling that could affect performance. Divers or ROVs are often used to conduct these inspections without dry-docking the vessel.

Size: Typically ranges from 50 mm to 500 mm in diameter.

Grade: Marine-grade materials, often compliant with ASTM or ISO standards.

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

Buoyancy: Neutral to slightly negative buoyancy for stability underwater.

Material: Stainless steel (e.g., 316L), bronze, or nickel-aluminum bronze for corrosion resistance.

Inspection Method: Visual, ultrasonic, or magnetic particle testing for cracks and erosion.

Surface Finish: Smooth to reduce drag and cavitation.

Weight: Varies by size and material, typically 1 kg to 20 kg.

Operating Depth: Up to 100 meters for standard inspections.

Compatibility: Suitable for marine vessels, submarines, and ROVs.