Abstract: The invention relates to a submersible power plan. The submersible power plant is submerged in a fluid. The power plant includes a structure and a vehicle where the vehicle has at least one wing. The vehicle is arranged to be secured to the structure by at least one tether. The vehicle is arranged to move in a predetermined trajectory by a fluid stream passing the vehicle. The tether includes an upper tether part and a lower tether part. The upper tether part has an average density higher than the fluid, has a hydrodynamic cross section and is arranged to be connected to the vehicle. The lower tether part has an average density lower than the fluid, has a non-hydrodynamic cross section and is arranged to be connected to the structure.

Abstract: The present invention relates to a tether for connecting a moving device submerged in liquid to a support structure, e.g. a submersible power plant comprising a stream-driven vehicle provided with at least one turbine for generation of electrical energy. The tether extends in a main direction, and at least a tether portion of the tether comprises a tensile force bearing portion extending in the main direction of the tether, wherein the tether portion is arranged to strive to self-align in relation to a relative flow direction of the liquid during use.

Abstract: The invention relates to a submersible power plant. The power plant comprises a structure and a vehicle. The vehicle is arranged to be secured to the structure by means of at least one tether. The vehicle is arranged to move in a predetermined trajectory by means of a fluid stream passing the vehicle. The vehicle comprises a first wing and a second wing, where the first wing is arranged at a first distance D1 from the second wing in a longitudinal direction, and the first wing is arranged at a second distance D2 from the second wing in a lateral direction.

Abstract: The invention relates to a submersible power plant. The power plant comprises a structure and a vehicle. The vehicle is arranged to be secured to the structure by means of at least one tether. The vehicle is arranged to move in a predetermined trajectory by means of a fluid stream passing the vehicle. The vehicle comprises a first wing and a second wing, where the first wing is arranged at a first distance D1 from the second wing in a longitudinal direction, and the first wing is arranged at a second distance D2 from the second wing in a lateral direction.

Abstract: The invention relates to a power plant for producing electrical power. The power plant comprises a vehicle comprising at least one wing arranged to be secured to a structure by means of at least one tether. The vehicle is arranged to move with a varying speed over a predetermined trajectory by means of a fluid stream passing the wing. The power plant comprises an element arranged to change or allow change of the distance between the vehicle and the structure continuously over or during parts of the predetermined trajectory, thereby reducing the variation in speed of the vehicle over the predetermined trajectory and/or allowing electrical power to be generated from the variation in distance by means of a transducer arranged to be attached to the power plant. The advantage of the invention is that an increased efficiency is obtainable for the power plant.

Abstract: The present invention relates to a tether for connecting a moving device submerged in liquid to a support structure, e.g. a submersible power plant comprising a stream-driven vehicle provided with at least one turbine for generation of electrical energy. The tether extends in a main direction, and at least a tether portion of the tether comprises a tensile force bearing portion extending in the main direction of the tether, wherein the tether portion is arranged to strive to self-align in relation to a relative flow direction of the liquid during use.