Abstract: Marine structure having a base and a foundation means projecting downwardly from the base for pressing into the sea bed. The foundation comprises a wall system with pile means on both sides of the wall(s).

Abstract: A multi-purpose marine structure intended to be submerged and installed on a sea bed. The structure comprises an outer peripheral body and a tapered inner section. The outer peripheral body is intended to be founded on a sea bed and comprises a tubular ring-formed body of concrete, the base of which is constructed and arranged to rest on a sea bed along its entire base periphery. The inner section is also of concrete and is formed as a cone or polyhedron having a lower end which is fixed to the outer peripheral body, the inner section tapering upwardly and inwardly from its lower end. The inner section and outer body together form a monolithic integral concrete unit, the inner section being fixed to the outer body along the inner periphery of the outer body.

Abstract: A method is provided for mounting a deck superstructure, comprising at least one concrete girder and/or beam, on a supporting structure intended to operate in marine surroundings. The supporting structure comprises at least one column which extends above sea level and the method comprises the steps of bringing the deck superstructure, either as a unit or in sections, in position relative to the column, hoisting the deck superstructure up to the final position thereof using cables and a jacking system, and tensioning the cables upon the arrival of the deck superstructure in its final position. The lower ends of the cables are permanently anchored to the deck superstructure while the upper ends of the cables are connected to hoisting and tensioning devices arranged on top of the column.