The invention relates to a ducted wind turbine having a turbine rotor assembly which extracts kinetic energy from air flowing there past. The rotor assembly includes a plurality of rotor blades having rotor tips at their outermost ends which define a rotor tip sweep circumference. A duct assembly at least partially surrounds said rotor tip sweep circumference and a base platform supports the ducted wind turbine. The duct assembly is mounted on the base platform by way of a weathervane bearing arrangement such that the duct assembly may weathervane around the turbine rotor assembly in response to changes in wind direction. A semi-submersible support platform, wave energy capture apparatus, torsional bearing mechanism and a latticework wind turbine tower associated with the ducted wind turbine are also provided.

A floating offshore structure includes a buoyant hull including a first column, a second column, and a pontoon coupled to the first column and the second column. Each column is vertically oriented and the pontoon extends horizontally from the first column to the second column. Each column has a central axis, an upper end, and a lower end. The pontoon includes a first tubular member and a second tubular member positioned laterally adjacent to the first tubular member. Each tubular member has a central axis, a first end coupled to the lower end of the first column, and a second end coupled to the lower end of the second column. The longitudinal axis of the first tubular member and the longitudinal axis of the second tubular member are disposed in a common horizontal plane.

Framework structure (70) and method for modular construction of an offshore framework structure comprising frameworks (50) with a first bar (51) functioning as a floating body, a second bar (52), with two posts (53) for substantially parallel support of the bars (51, 52) and two bands (54) for tensioning the framework (50). A connection element (55) is arranged at each end of the bars (51, 52), each of which has a single flange (56) for attaching a single bar (51, 52) to the connection element (55). In the connection elements (55), receiving areas (57) are arranged transversely to the longitudinal direction (61) of the bars (51, 52) for attaching the posts (53). Further, the connection elements (55) have securing means (58) for securing bands (54) provided with tensioning devices (60) in such a way that the framework (50) can be held in shape or diagonally tensioned by means of the tensioning devices (60). The connection elements (55) are constructed with respect to the longitudinal direction (61) of the bars (51, 52) in such a way that an extension (62) is configured on one side and a holder (66) can be arranged on the opposite side so that the extension (62) of a connection element (55) of a framework (50) can be joined with the holder (66) of another connection element (55) of a further framework (50).

A semi-submersible wind power platform includes a tower and a plurality of arms for stabilizing the tower, each arm having a float experiencing an anchoring force. Each arm consists of two elongated elements forming with part of the tower a triangle, and at least one of the elongated elements includes a catenary element.

A suspended self-balancing self-cruising online water quality monitoring device, an online water quality monitoring method, and an online water quality assessment method are provided. The device includes a suspension cabin main body, a communication and control system, and a suspended carrying platform configured for self-balancing attitude adjustment. Suspension feet configured to drive the suspension cabin main body to implement self-balancing attitude adjustment, cruising, or fixed-point suspension are arranged outside the suspension cabin main body. The communication and control system is configured to plan a W-shaped water-region cruising path and sampling points thereon according to a topography of a water region, control the water sample testing device to test quality of water along the sampling points online, assess water quality of the water region according to an online testing result, and output the water quality of the water region. The device achieves precise positioning and self-cruise monitoring are achieved.

Floatable, torus-segment-like pontoon for a torus-like floating body constructed from a plurality of such pontoons, with a torus eye containing the torus axis of rotation. The pontoon comprises connecting means on substantially flat side surfaces, which are designed in such a way that adjacent pontoons can be joined in a positive-fitting manner in the axial direction; Receiving areas on the radially inner pontoon surfaces for receiving a component in the torus eye; Retaining means arranged on the radially outer pontoon surfaces for holding adjacent pontoons together in the torus circumferential direction and in the radial direction; and connecting means configured on one of the side surfaces as at least one groove extending in the radial direction and on the other side surface as at least one opposite, substantially complementary tongue opposite to the groove. Said pontoon made of plastic and produced by rotational melting, extrusion blow moulding or RIM process.

Floating support for a wind turbine including a central support member, and at least three buoyancy assemblies, each connected to the central support member via a radial connector beam and mutually interconnected via a transverse connector beam, wherein each buoyancy assembly includes a connector body having two radial sides, an outward and an inward transverse side, wherein two transverse connector beams and a radial connector beam extend away from the inward transverse side of the connector body, an anchor is provided at or near the outward transverse side of the connector body and the radial sides of the connector body are each connected to a respective buoyancy element.

A support structure for a wind power generation device comprises: a plurality of floats that can float on the surface of water or in the water; a connecting member having one end connected to one of the floats and the other end connected to another of the floats among the plurality of floats; a support platform that is provided between the plurality of floats and supports the bottom end of a tower part of the wind power generation device; a linear wire member having one end connected to one of the floats and the other end connected to the support platform; and a support member that is provided on the floats or on the connecting member and supports the tower part, which is supported on the support platform, from a lateral direction while the support member being movable along the axial direction of the tower part.

A semi-submersible structure with buoyant vertical columns and a buoyant pontoon. Unlike the typical semi-submersible where the pontoons are attached directly between the columns, the pontoon of the invention encircles the columns and is arranged outside of the columns. The pontoon encircling the columns simplifies construction and attachment of the pontoon and columns and improves the heave characteristics of the structure.

A floating offshore structure includes a buoyant hull including a first column, a second column, and a pontoon coupled to the first column and the second column. Each column is vertically oriented and the pontoon extends horizontally from the first column to the second column. Each column has a central axis, an upper end, and a lower end. The pontoon includes a first tubular member and a second tubular member positioned laterally adjacent to the first tubular member. Each tubular member has a central axis, a first end coupled to the lower end of the first column, and a second end coupled to the lower end of the second column. The longitudinal axis of the first tubular member and the longitudinal axis of the second tubular member are disposed in a common horizontal plane.