Mooring winches on ships are mechanical devices used to secure the vessel to a dock or buoy by handling ropes or cables. They provide controlled tension and release during mooring operations, ensuring stability and safety. These winches are typically powered by electric, hydraulic, or pneumatic systems for efficient operation.

Size: Typically ranges from 10 kW to 500 kW, with drum capacities from 100 meters to 1,000 meters of rope or wire.

Grade: Commonly complies with ISO 7825, OCIMF MEG4, and other marine standards.

Viscosity: Hydraulic systems use ISO VG 32 to VG 68 hydraulic oil, depending on operating conditions.

Buoyancy: Not directly applicable; winches are mounted on deck and do not float.

Material: Constructed from high-tensile steel (ASTM A36 or equivalent), with stainless steel or galvanized components for corrosion resistance.

Load Capacity: Ranges from 5 tons to 250 tons, depending on ship size and mooring requirements.

Braking System: Dynamic brakes with fail-safe mechanisms, often rated for 60%-80% of maximum line pull.

Speed: Variable, typically 10-30 meters per minute under load.

Power Source: Electric, hydraulic, or diesel-driven, depending on vessel design.

Environmental Rating: IP56 or higher for water and dust resistance.