Abstract: An anchor has a fluke (3) having an underside (2) lying in one flat geometrical plane and comprising two fluke parts (5, 6) which each have a forwardly pointed tip (7, 8) on either side of the central plane (9) of symmetry which is perpendicular to the geometrical plane (2) of the underside. These two fluke parts (5, 6) form an integral unit at the central plane (9) and have their front edges (10, 11, 12, 13) in that geometrical plane (2) tapering towards the respective tips (7, 8) and from each tip (7, 8) extend rearwardly with a cross section in each plane perpendicular to the underside plane (2) and perpendicular to the plane (9) of symmetry. That unit is substantially triangular up to and beyond the point where the inner front edges (11, 12) of the fluke parts (5, 6) meet, which triangular cross sections (10, 11, 12, 13) have their apex (22, 23) according to a straight ridge line which from each tip (7, 8) extends rearwardly at a sharp angle (.alpha.) with the underside plane (2).

Abstract: Mooring device comprising a vessel with a turntable or the like to which anchor lines are connected extending in different directions and which is rotatable about a vertical axis, which anchor lines, preferably at or adjacent to the point of connection with the vessel, are provided with a hydraulic device which upon overload of one or more of the anchor lines allows extension so that in extremely heavy weather conditions the loads on mooring lines and vessel can be kept under control.

Abstract: Coupling between a vessel (1) and a mooring device (12) comprising a pin and a receiving sleeve (14) into which the pin (9) may slide axially, the sleeve (14) being swingably suspended and connected with hydraulic struts (18) in a circuit with valves (28,29) which can block the movability of the struts (18).