Abstract: A vessel mooring system for mooring a vessel to a mooring facility on a wharf by means of a plurality of mooring systems, which mooring systems incorporate tension detectors therein, whereby the vessel is moored to the mooring facility in a well balanced condition by adjusting the tensions exerted on the respective mooring systems by using tension signals issued from the tension detectors. The aforesaid plurality of mooring systems each consist of fixing devices, such as a dolphin, hook formed on the fixing device, groups of ropes and winches on board the vessel.