A temporary working platform for removable attachment to a column of an offshore structure. The platform comprises a frame for carrying a working structure such as a working surface. Further, the platform comprises a mounting mechanism for releasably mounting the working platform to said column, from a side of the column. The mounting mechanism may include a clamping mechanism supporting the frame. The clamping mechanism may be arranged for at least partially surrounding a column of an offshore structure and for releasably clamping said column.

A movable platform assembly for a boat includes a support structure configured to be connected to the boat, a platform, and a horizontal translation system connecting the platform to the support structure, the horizontal translation system having a pair of main arms rotatable about respective vertical rotation axes, and a pair of main sliders sliding in a transverse direction along a main guide integral with the platform. Each main arm has a proximal end hinged to the support structure and a distal end hinged to a respective main slider. The platform is translatable between a retracted position and an extended position with respect to the support structure.

Passenger bridge (100), comprising a proximal end (110), comprising a passenger passage opening (111); a distal end (120), comprising a bridge head (121); at least one first bridge segments (130), a proximal one (131) of which comprises, at the said proximal end (110), said passenger passage opening (111); at least one second segments (140), a distal one (142) of which comprises, at said distal end (120), the bridge head (121); a first support structure (150), arranged to support said first (130) and second (140) bridge segments so that at least one of said first segments (130) and at least one of said second segments (140) can be individually tilted; whereby the said first (130) and second (140) bridge segments together form a connected passage way for passengers between the proximal (110) and distal (120) ends, allowing the bridge head (121) to move vertically in relation the proximal end (110) by said bridge segments (130,140) tilting; characterised in that the length of the distal second bridge segment (142) can be telescopably adjusted, thereby moving the bridge head (121) horizontally in relation to the proximal end (110), and in that the passenger bridge (100) further comprises a second support structure (160), supporting the distal end (120) and being individually horizontally movable in relation to the first support structure (150).

A cassette assembly is disclosed attachable to an end portion of a waterborne vessel and including a cassette section to bear against an external structure in use. The cassette section is movable relative to the vessel in a direction towards an opposite end of the vessel. A resilient buffer system counters movement of the cassette section when the vessel is moved towards the external structure, wherein the resilient buffer system includes a buffer including a plurality of resiliently compressible elements arranged in series. A waterborne vessel includes a receiving portion for receiving the cassette assembly, and can be used to service a water-accessible structure such as a wind turbine.

A walk-to-work system for allowing personnel and/or equipment to move between a vessel and a wind turbine includes a gangway system and an elevator system positioned with a radial offset from the gangway system. The gangway system includes a height adjustable elongated pedestal and a gangway. The height adjustable elongated pedestal has a first elongated pedestal end mountable onto a deck of the vessel. The height adjustable elongated pedestal includes a first pedestal part and a second pedestal part height adjustably coupled to the first pedestal part. The gangway is rotationally coupled to the height adjustable elongated pedestal at a height H.sub.g from the first elongated pedestal end such that the gangway is radially extending at a length L.sub.g from a center axis of the height adjustable elongated pedestal. The elevator system includes a height adjustable elongated elevator having a first elevator end mountable onto the deck of the vessel. The height adjustable elevator includes a static elevator part and a displaceable elevator part height adjustably coupled to the static elevator part. The elevator system includes a drive system, an elevator car, and a lifting device. The drive system is configured to displace the displaceable elevator part relative to the static elevator part along the elevator's height. The elevator car is movably connected to the height adjustable elevator. The elevator car is configured to be elevated up to the same height as the gangway for allowing access between the elevator system and the gangway system. The lifting device is configured to move the elevator car of the height adjustable elevator.

A control system and a method are for maneuvering an elongated element which projects in a pivotable manner from a foundation. The landing place is provided with a camera-readable pattern. The projecting end portion is provided with at least one camera which is arranged to imagine the graphic pattern when the end portion is near the landing place. The camera is connected in a signal-communicating manner to an image processor. The image processor is arranged to determine the position of the camera relative to the pattern by an image analysis and convert the image information into control parameters for the control system to position the projecting end portion relative to the landing place.

A walkway installation includes a base (1) intended to be fastened to a support construction, such as to the deck (5) of a ship (6), as well as a base bridge part (2) that is connected at one end so it can be rotated around an upright base axis of rotation (11) with the base. Furthermore, a main bridge part (4) is positioned on the other end of the base bridge part (1) as well as a hinge construction between the base bridge part (1) and the main bridge part (2). The hinge construction has an upright main axis of rotation (12) and an auxiliary axis of rotation (13) aligned transversely to the upright main axis of rotation and transversely to the main bridge part. By rotating the gangplank parts, the installation may be adjusted in a reliable and quick way in relation to a fixed object or another vessel.

Ramp assembly systems and methods of use are described. According to one aspect, a vessel ramp assembly system includes a ramp assembly configured to assist with ingress and egress of an individual with respect to the vessel, a deployment system configured to move the ramp assembly between a stowed position with respect to the vessel and a deployed position with respect to the vessel, and a positioning system configured to move the ramp assembly to move a first end of the ramp assembly with respect to a deck of the vessel and provide a second end of the ramp assembly at an appropriate position where the individual may use the ramp assembly for the ingress and egress with respect to the vessel.

A boat ramp designed to collapse so the amphibious vehicle may be towed at highway speeds. The ramp fabricated of a central isosceles triangle hinged to the vehicle at its base flanks a pair of right triangles hinged along their hypotenuses such that the ramp can be folded over the vehicle during travel. The hinged portion is reinforced with removable steel channel during use.

A device, such as a gangway, for transferring personnel and/or goods from a surface vessel to a fixed or floating structure, e.g. an offshore structure, such as a wind turbine, or to another vessel, the device comprising first and second telescoping elements and an intermediate platform for bridging the transition between the first and second telescoping elements, which platform is movable relative to both telescoping elements.