Abstract: An off-shore platform of the self-erecting type has a floating deck provided with legs which can be raised and lowered and on which the platform is jacked up after they rest on a base structure placed onto the ocean floor. Each of the legs is guided within the deck in two vertically spaced bearings, the upper one of which is universally yieldable so that the leg can pivot about a center point of this bearing and the lower one of which is yieldable only in radial direction and provided with an annular space surrounding the leg and into which compressible or incompressible flowable medium can be introduced at will so as to allow the bearing either to yield or else to prevent it from yielding.

Abstract: A sea platform includes a first part which comprises a floatable platform or deck having a plurality of supporting legs which extend therethrough and which may be elevated and lowered by an elevating mechanism. A second part comprises a floatable base which is adaptable to be lowered to the sea bed. A plurality of second legs extend upwardly from the base and they include open tops in an uppermost chamber of a size to receive the lowermost ends of the first legs therein in telescopic interengagement. Both the first and second parts are floatable out to the location to be of use and the base is then flooded in order to submerge it to the sea bed. The other part includes a floatable platform and it includes an elevating mechanism for each of its legs which may be lowered into the tops of the legs extending upwardly from the base after it arrives at the same location as the base.

Abstract: An off-shore power plant in which the steam generators of the power plant are located within the support structure carrying the components of the power plant. The steam generator is operated with superpressure in the combustion chamber. A gas turbine is connected to the flue gas smoke stack of the combustion chamber, and a steam turbine is connected to the steam duct of the chamber. The support structure holding the steam generator carries a platform with several decks. The water treatment and gas purification equipment is located on the lower deck, whereas the upper deck carries the turbines and the generators.