The present invention relates to a method for installing a wind turbine or other tall structure at a target location at sea, the method comprising: —providing an installation vessel comprising at least one crane, wherein the crane comprises a lower boom part, a right boom part, and a left boom part, wherein the right boom part and the left boom part are connected to an upper portion of the lower boom part and extend from said upper portion, wherein a space is present between the right and left boom part, —lifting a tall structure part, in particular the nacelle assembly, with the crane, wherein in top view the tall structure part is supported at least partially between the right and left boom part by one or more hoist lines extending from the right and left boom part to the tall structure part.

The present invention relates to a method for installing a wind turbine or other tall structure at a target location at sea, the method comprising: —providing an installation vessel comprising at least one crane, wherein the crane comprises a lower boom part, a right boom part, and a left boom part, wherein the right boom part and the left boom part are connected to an upper portion of the lower boom part and extend from said upper portion, wherein a space is present between the right and left boom part, —lifting a tall structure part, in particular the nacelle assembly, with the crane, wherein in top view the tall structure part is supported at least partially between the right and left boom part by one or more hoist lines extending from the right and left boom part to the tall structure part.

A device for launching and recovering a box sampler includes a suspension coop, a rail assembly, a moving mechanism, a power unit, and a lifting frame. The rail assembly is fixedly arranged on a deck. The moving mechanism is arranged on the rail assembly and can move along the rail assembly. A fixed end of the power unit is articulated with a top end of the moving mechanism, and an extending end of the power unit is articulated with an open end of an upper frame of the lifting frame. A closed end of the upper frame of the lifting frame is articulated with a front end of the moving mechanism. According to the device for launching and recovering a box sampler, the box sampler can be smoothly launched and recovered. The sampler in the suspension coop can be kept horizontal and is prevented from severely shaking.

A device for launching and recovering a box sampler includes a suspension coop, a rail assembly, a moving mechanism, a power unit, and a lifting frame. The rail assembly is fixedly arranged on a deck. The moving mechanism is arranged on the rail assembly and can move along the rail assembly. A fixed end of the power unit is articulated with a top end of the moving mechanism, and an extending end of the power unit is articulated with an open end of an upper frame of the lifting frame. A closed end of the upper frame of the lifting frame is articulated with a front end of the moving mechanism. According to the device for launching and recovering a box sampler, the box sampler can be smoothly launched and recovered. The sampler in the suspension coop can be kept horizontal and is prevented from severely shaking.

The present application provides a semi-submersible immersed tube transportation and installation integrated ship and a construction process; the integrated ship includes: a deck structure; two floating structures, ballast water being able to be injected therein; and upper portions or top surfaces of the two floating structures are connected by the deck structure; and two support mechanisms, disposed on opposite sides of the two floating structures respectively; and each support mechanism is disposed at a lower portion or a bottom of the floating structure. The integrated ship can reduce the draught of the integrated ship carrying an immersed tube and realize the transportation requirements of shallow waterway.

The present application provides a semi-submersible immersed tube transportation and installation integrated ship and a construction process; the integrated ship includes: a deck structure; two floating structures, ballast water being able to be injected therein; and upper portions or top surfaces of the two floating structures are connected by the deck structure; and two support mechanisms, disposed on opposite sides of the two floating structures respectively; and each support mechanism is disposed at a lower portion or a bottom of the floating structure. The integrated ship can reduce the draught of the integrated ship carrying an immersed tube and realize the transportation requirements of shallow waterway.

A device for launching and recovering a box sampler includes a suspension coop, a rail assembly, a moving mechanism, a power unit, and a lifting frame. The rail assembly is fixedly arranged on a deck. The moving mechanism is arranged on the rail assembly and can move along the rail assembly. A fixed end of the power unit is articulated with a top end of the moving mechanism, and an extending end of the power unit is articulated with an open end of an upper frame of the lifting frame. A closed end of the upper frame of the lifting frame is articulated with a front end of the moving mechanism. According to the device for launching and recovering a box sampler, the box sampler can be smoothly launched and recovered. The sampler in the suspension coop can be kept horizontal and is prevented from severely shaking.

A device for launching and recovering a box sampler includes a suspension coop, a rail assembly, a moving mechanism, a power unit, and a lifting frame. The rail assembly is fixedly arranged on a deck. The moving mechanism is arranged on the rail assembly and can move along the rail assembly. A fixed end of the power unit is articulated with a top end of the moving mechanism, and an extending end of the power unit is articulated with an open end of an upper frame of the lifting frame. A closed end of the upper frame of the lifting frame is articulated with a front end of the moving mechanism. According to the device for launching and recovering a box sampler, the box sampler can be smoothly launched and recovered. The sampler in the suspension coop can be kept horizontal and is prevented from severely shaking.

A system that includes a first winch assembly having a first structure on which a fuel hose is configured to be spooled and unspooled, the first structure having a first rotational axis. The system also includes a second winch assembly located rearward of the first winch assembly, the second winch assembly includes a second structure on which a messenger line is configured to be spooled and unspooled, the second structure having a second rotational axis and being rotatable between first and second rotational positions. Upon the second structure being in the first rotational position the second rotational axis is non-orthogonal to the first rotational axis. Upon the second structure being in the second rotational position, the second rotational axis is orthogonal to the first rotational axis. The second structure including an axial through opening through which the fuel line is configured to pass when the second structure is in the second rotational position.

A system that includes a first winch assembly having a first structure on which a fuel hose is configured to be spooled and unspooled, the first structure having a first rotational axis. The system also includes a second winch assembly located rearward of the first winch assembly, the second winch assembly includes a second structure on which a messenger line is configured to be spooled and unspooled, the second structure having a second rotational axis and being rotatable between first and second rotational positions. Upon the second structure being in the first rotational position the second rotational axis is non-orthogonal to the first rotational axis. Upon the second structure being in the second rotational position, the second rotational axis is orthogonal to the first rotational axis. The second structure including an axial through opening through which the fuel line is configured to pass when the second structure is in the second rotational position.