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 feeder vessel for the onshore-to-offshore transport of elongate wind turbine objects with a motion compensating carrier assembly having a motion compensated platform for receiving and retaining the elongate object, and a motion compensation mechanism. The motion compensation mechanism includes extendable actuators which passively compensate motions of the platform out of a neutral position, and winches driving carrier cables such that traction by the respective carrier winch counteracts an extension of at least one of the carrier actuators. The winches are embodied as active motion compensation winches to compensate movements of the platform.

A system for lifting a load via a spreader bar includes a spreader bar and a swivel lug assembly. The swivel lug assembly includes an upper swivel, a lower swivel, and a load pin extending between a pair of load pin holes in the upper swivel and the lower swivel. The upper swivel is pivotable relative to the lower swivel about the load pin. The spreader bar includes two opposing sides each having a height, and spreader bar pin holes in each of the sides. The spreader bar pin holes are located at a midpoint of the height of each of the sides. The load pin is detachably attached to the first swivel lug assembly through the pair of load pin holes in the upper swivel and the lower swivel in order to releasably attach the swivel lug assembly to the spreader bar via two opposing spreader bar pin holes.

A modular spreader structure (10) for use in offshore lifts comprises a plurality of elongate tubular elements (26, 22) made primarily of composite material. Primary tubular elements (26) each comprise an axial coupler formation (28) for end-to-end coupling with a complementary axial coupler formation of another primary tubular element, aligned on a common longitudinal axis. The adjoining primary tubular elements are interengageable by longitudinal overlap between male and female axial coupler formations. Secondary tubular elements (22) each comprise a node connector (30) that is configured for attachment to the structure at an orientation inclined relative to the common longitudinal axis of the primary tubular elements. In particular, the secondary tubular elements can be attached to an outer surface of one of the primary tubular elements.

A lift system for a baler implement includes a hanger including a hanger body defining a first aperture and a second aperture. The first aperture is positioned such that a center of gravity of the hanger body is located within the first aperture. The second aperture is positioned vertically below the first aperture. A lift line includes an upper end portion secured to a line actuator, and a lower end portion supporting the hanger. The lower end portion of the lift line is routed through the first aperture and the second aperture and is secured relative to the hanger such that the lift line applies a lift force to the hanger body at the center of gravity of the hanger body. The hanger includes a first pocket and a second pocket at respective ends of the hanger body shaped to capture respective lifting bands on a roll of wrap material.

The present invention relates to a blade positioning system configured for positioning wind turbine blades at a hub of a nacelle of a wind turbine from an installation vessel at an offshore location, the blade positioning system comprising: the installation vessel comprising: — at least one lifting device configured for lifting wind turbine components, and — an auxiliary support tower extending upwardly from the installation vessel, the auxiliary support tower comprising: o a nacelle support for supporting the nacelle, o a root end moving assembly defining a guide path which extends over a vertical distance, the root end moving assembly comprising a movable root end support base and a root end support configured for supporting and guiding the root end of the blade, the root end support being connected to the movable root end support base, the root end support being movable along the guide path, the root end moving assembly being configured for moving the root end of the blade along the guide path from the engagement position to an installation position, the at least one lifting device being configured for lifting the nacelle onto the auxiliary support tower, wherein the at least one lifting device and the root end moving assembly are configured to jointly support and jointly move the blade upwards towards the hub, wherein during the movement the root end is supported by the root end support and the lifting device carries a majority of the vertical loads on the blade.

A lifting tool for lifting an element of an offshore structure, such as a transition piece of an offshore wind turbine comprises a frame and a plurality of engagement members for engaging an element to be lifted. The engagement members are mounted to the frame at an angular distance from each other about a centerline of the frame. The lifting tool also comprises a hoisting member to be connected to a hoisting cable of a crane, and located within a virtual cylinder on which the engagement members lie. The hoisting member and the frame are interconnected rigidly through at least three linear actuators which are arranged such that the hoisting member is movable with respect to the frame in a plurality of radial directions with respect to the centerline, independently from the engagement members.

Lifting device (1) intended for use in lifting sacks or the like, which lifting device (1) comprises at least a first lifting device part (2), at least a second lifting device part (3) and at least one locking means (4). The lifting device (1) the first lifting device part (2) and the second lifting device part (3) can be connected and disconnected from each other, and that the first lifting part (2) and the second lifting part (3) can be temporarily locked with each other with at least one first locking means (4).

A hoist cage assembly for lifting a pallet with a crane includes a cage that has a bottom end that is open for positioning around a pallet of material. The cage has a plurality of bar openings each extending through the cage. A plurality of bars is each of the bars is slidable through a respective pair of the bar openings to extend through the pallet when the cage is lowered over the pallet. Each of the bars rests on the cage when the cage is lifted to lift the pallet when the cage is lifted. A plurality of sleeves is each of the sleeves is coupled to the cage and the sleeves are strategically arranged on the cage thereby facilitating each of the bars to be slidably stored in the plurality of sleeves.

A handling arrangement for handling a wind turbine rotor blade includes a frame assembly realized to fit about the airfoil of the rotor blade; a number of add-on covers arranged to fit between the frame assembly and the airfoil surface, wherein an add-on cover is shaped to fit around a number of add-ons; and a load-bearing material for filling the add-on cover when the add-on cover is pressed against the rotor blade. A method of handling a wind turbine rotor blade is also provided.