Disconnectable mooring system

An improved detachable mooring system (1) is disclosed of the kind including a rotatable turret (10) mounted on the vessel (5) and a buoyant spider buoy (20), secured by chains (22) to the sea floor, which may be selectively connected by means of a hydraulic connector (209) to the bottom of the turret (10). The improvement includes a radial support assembly (54) of the turret (10) within the well at a lower position of the well approximately opposite a connection between the turret and the mooring element. Such lower radial support (54) is self aligning with the turret when the turret's axis is not precisely parallel with the axis of the radial support and when the turret outside surface is not precisely round.