Factory Acceptance Checks for a Marine Mooring Winch
Buyers should define measurable pass or fail checks for a 100 kN mooring winch before factory acceptance, covering line pull, line speed, drum capacity, and hydraulic power.
Before signing off a marine mooring winch, decide which factory acceptance results will be pass or fail, not merely observed. For a unit rated at 100 kN line pull and at least 15 m/min line speed, ask the supplier to state the test load, rope condition, and measurement method in the quotation, then repeat them in the acceptance procedure.
Useful checks include: does the winch hold the rated line pull without unacceptable drift or leakage; does it reach the rated line speed under the agreed test conditions; and does the drum accept 200 m of 30 mm diameter rope with even spooling? Confirm how the 45 kW hydraulic motor is verified, such as supply pressure and flow at test, and whether these are reference values or guaranteed limits for the supplied model. For a demonstration, request a loaded run and a controlled stop, and record results against agreed tolerances. Ask whether pass criteria apply to the complete winch or only to components.
Before requesting a quote, confirm with the supplier which tests are witnessed, what instrumentation and calibration are used, how rope tension and speed are measured, and what documentation accompanies each result.