Abstract: Offshore structure that is provided with a supporting system with one, two, three or more suction buckets (1) to be installed in the seabed, which buckets are fastened to the rest of the foundation system and with a star-shaped, seen in top view, connector body (6) of reinforced mineral cement concrete with the same number of external corners as there are suction buckets, which external corners are formed by the radial outwardly extending arms which provide the star shape and with a single vertical central column (5) placed centrally between the suction buckets, seen in top view, formed by a single tube and made of e.g. thin-walled steel, which carries the gondola of the windmill at its top, the gondola with the rotor blades at least 20 meters above the local water level.

Abstract: Marine structure with one or more suction piles for embedment into the subsea bottom and with buoyancy sufficient such that the structure can be transported over water independently floating, including in an upright position, wherein the buoyancy is concentrated near the suction piles, and may be substantially in line with the suction piles, and wherein the buoyancy is such that if the suction piles touch the subsea bottom with their undersides, at least part of the buoyancy projects above the water surface.

Abstract: The marine structure includes a platform above a body of water and having at least three spaced upright supporting legs extending downwards from the platform towards the body of water, at the lower side of which a suction pile is connected wherein each supporting leg is connected to the relevant suction pile externally from its longitudinal axis. The supporting leg laterally projects outside the radial circumference of the suction pile while the suction piles and the supporting legs are mutually arranged such that the suction piles are present outside the space delimited between the supporting legs and a floater extends through the space delimited by the supporting legs.

Abstract: A combination of an installation device and a sea bottom anchor is adapted to install the anchor (1) into the subsea bottom by means of suction pressure. The anchor has one or more anchoring amplification members that can be brought into an active position from an inactive position to increase the anchoring capacity of the installed anchor.