Abstract: An offshore windpower plant (OWP) including a wind turbine and foundation and a new method of installing them that exclude the use of a jack up crane vessel. By this system and method, named OWP technology, the completely assembled wind turbines are lifted from the shore stand, using the buoyancy force of a catamaran wind installer (CWTI), transported to the preinstalled foundation, engaged with it in a manner that would exclude CWTI from rolling and pitching and by this allow to use the installed foundation as the base for stability for safely placing a wind turbine on it allowing placement of wind turbines on foundations regardless of the depth of their installation. The CWTI does not need a heavy lift revolving heavy lift crane and also does not need legs, thus making the system and method simpler, smaller and drastically less expensive than jack up crane vessles.

Abstract: The main goal of the proposed by present invention compliant guyed tower is to increase the depth in which offshore wind turbines can be installed from present limit of 50 meters to 200+ meters. The specifics of compliant guyed towers, which are widely used by offshore oil industry for installation platforms in water depth starting from 300 meters and up to 1,000 meters, is in their long mooring lines, which have springiness that allows to mitigate dynamics of wind and waves forces acting on platforms. The length of mooring lines for wind turbines installed in the relatively shallow waters is not sufficient to have required springiness. By present invention the mooring line are attached to anchors on seabed through a pneumatic hydraulic spring, which provides to the mooring line the needed additional springiness.

Abstract: An Offshore Windpower Plant (OWP) includes wind turbine and foundation with the means that allow installing them by a new method that exclude the use of Jack up Crane Vessel. By this method, named OWP Technology, the completely assembled wind turbines would be lifted from the shore stand, using buoyancy force of Catamaran Wind Installer (CWTI), transported to the preinstalled foundation, engaged with it in a manner that would exclude CWTI from rolling and pitching and by this allow to use installed foundation as the base for stability for safe placing wind turbine on it. Thus would allow placing wind turbines on foundations regardless the depth of their installation. The CWTI does not need heavy lift revolving heavy lift crane it also does not need legs, thus makes it simpler, smaller and drastically less expensive that Jack up Crane Vessels.

Abstract: Installation for harvesting energy of ocean currents (IHOC) in deepwaters is based on utilization of a semisubmersible platform and the multiple of vertically oriented Darrieus type hydraulic turbines. The turbines are located as close as possible to ocean surface, where speed of current is usually at its maximum. Since speed of current fluctuate during the seasons a system controlling buoyancy force of that keeps IHOC floating near surface is employed. The mooring system consists of three tethers, which prevent transferring of overturning moment applied to IHOC to anchoring base. The electric power generators are located in a machinery room on a structure well above sea level and would transmit electric power to the shore utilizing flexible cable. During hurricane it will be lowered to the depth preventing turbines from being affected by wave actions, at the same time it would keep machinery room above wave action.