Abstract: The present invention relates to a tubular handling system (1) comprising: -a tower (10) comprising a tubular lift device for lowering and/or raising a tubular in an essentially vertical orientation, -a support (20) for supporting the tubular-laying tower -a tubulars supply system, preferably provided on the support, for supplying tubulars 26 to an essentially horizontal supply position in the vicinity of the tower, -a tubular handling apparatus (2) for transporting a tubular between the essentially horizontal supply position and the tubular lift device in the tower, wherein the tubular handling apparatus comprises: a gripper (4a, 4b) adapted for gripping the tubular, a base (6), and a boom (5) to which the one or more grippers are attached, which boom is pivotable with respect to the base in a boom.

Abstract: A tailpipe stone dumping vessel (1) for stone dumping through a fallpipe suspended from the vessel, comprising: • of a hull (1a), • a fallpipe section storage for storing fallpipe sections (2), • a tower (20) at least comprising fallpipe support means (40) for supporting the suspended fallpipe, said tower (20) being adapted for assembly and disassembly of the fallpipe by addition of a fallpipe section to the upper end of the suspended fallpipe or removal of a fallpipe section from the suspended fallpipe, respectively, • a tower gimbal structure (22) provided between the hull and the tower providing a pivotal mode for the tower (20) wherein the tower is pivotable about at least one pivot axis with respect to the hull so that the tower—and the fallpipe suspended there from—has in a plane associated with said at least one pivot axis an orientation essentially independent from sea-state induced vessel motions, • hoist means (31, 32, 33, 34) for lowering and raising the suspended fallpipe, • fallpipe section handl

Abstract: The present invention relates to a marine pipeline installation system for laying an offshore pipeline and/or installing a subsea riser, said system being adapted to carry out the reel lay method and the J-lay method. The system comprises a vessel with a moonpool, a pipeline launch tower arranged on the vessel, a pipeline guide at an elevated position on said tower for guiding said pipeline to a pipeline launch trajectory along said tower, and one or more tensioners. The support assembly of at least one tensioner frame is adapted to allow for displacement of the tensioner frame between an active position, wherein the pipeline launch trajectory extends through the tensioner frame between the tracks, so that the tracks can engage on a pipeline, and a retracted and non-operable position. The system further comprises a J-Lay installation.

Abstract: A method for installing an accessory onto a pipeline to be laid on the seabed, includes launching the pipeline from a first position of a tower in which the tower is at an angle ? with respect to the vertical; stopping the launch of the pipeline, and hanging off the launched pipeline in a hang off module; positioning an accessory in a tower firing line; attaching the accessory to the launched pipeline in the hang off module and to at least one A&R cable; suspending the accessory and the launched pipeline from an A&R system; disengaging the hang off module from the launched pipeline; pivoting the pipeline launch tower to an accessory launch position in which the tower is at an angle ? that differs substantially from angle ?, such that a pipeline launch trajectory is created which is large enough to launch the accessory and the launched pipeline with the A&R system.

Abstract: A marine pipeline installation system for laying an offshore pipeline and/or installing a subsea riser, the system at least allowing to carry out the reel lay method, wherein the system comprises: one or more storage reels for storage of pipeline, a pipeline launch tower adapted for launching the pipeline in the direction of the sea, a pipeline guide at an elevated position for guiding said pipeline to a pipeline launch trajectory along said tower, one or more tensioners, each tensioner comprising a tensioner frame and multiple tracks supported by said tensioner frame, said tracks being adapted for engaging the pipeline and supporting at least part of the weight of the launched pipeline, the tensioner frame being supported by said tower via an associated support assembly.

Abstract: A marine tensioner has a tensioner frame (41) and multiple track units (42) mounted in said frame. Each track unit comprises an elongated chassis (42a), said chassis having end portions at opposed ends thereof as well as a central portion between said end portions Each track unit further comprises an endless track (42b) supported by said chassis and track motion control means for effecting controlled motion of the endless track, the endless track having a multitude of friction elements adapted to engage on the pipeline or the like. Between each track unit and the tensioner frame a connecting structure is provided that at least allows for lateral motion of the track unit so as to adapt the position of the track unit to the pipeline diameter.

Abstract: A marine pipelaying system and method for installing an offshore pipeline that includes one or more accessories. The system comprises a vessel (1), a pipeline launch device (10) for launching the pipeline (2) from the vessel in the direction of the seabed, and a clamping device (30) adapted to support the weight of the previously launched pipeline. The system further includes an accessory handling device, which is adapted to receive and support an accessory (40) and allow displacement thereof between an receiving position, wherein the accessory is received by the handling device and a pipeline connecting position, wherein the accessory can be connected to the pipeline (2).

Abstract: The invention relates to a subsea marine load raising and lowering system (1) for use on a vessel, preferably a vessel for laying an offshore pipeline, which system comprises first and second winches (2, 6) for raising or lowering first and second cable portions (4, 8) connected via an equalizing sheave (11), to the axle (12) of which a load connector (13) is connected. The system comprises operating means to perform synchronous raising or lowering of the cable portions. The system further comprises overload protection systems provided at both winches, and a safety assembly (15) preventing any substantial further movement of the cable portions (4, 8) in case the cable portions do not operate synchronously, comprising a structure (15a) mounted to the axle (12) of the equalizing sheave (11) having passages (15c) for the cable portions and further comprising stops (15b) arranged on each cable portion above and in the vicinity of the structure (15a).

Abstract: A marine pipeline installation system for laying an offshore pipeline and/or installing a subsea riser, the system at least allowing to carry out the reel lay method, wherein the system comprises: one or more storage reels for storage of pipeline, a pipeline launch tower adapted for launching the pipeline in the direction of the sea, a pipeline guide at an elevated position for guiding said pipeline to a pipeline launch trajectory along said tower, one or more tensioners, each tensioner comprising a tensioner frame and multiple tracks supported by said tensioner frame, said tracks being adapted for engaging the pipeline and supporting at least part of the weight of the launched pipeline, the tensioner frame being supported by said tower via an associated support assembly.

Abstract: A hoisting crane with a substantially hollow vertical column with a foot which is or can be fixed to a support, and with a top, an annular bearing structure, which extends around the vertical column and guides and carries a jib connection member, so that the jib connection member can rotate around the column, a jib connected to the jib connection member, the jib connection member forming a substantially horizontal pivot axis so that the jib can be pivoted up and down, a column top cable guide having a topping cable and hoisting cable pulley assembly, a topping winch and an associated topping cable for pivoting the jib up and down, a hoisting winch and an associated hoisting cable for hoisting a load; wherein the column top cable guide is mounted via an associated rotary bearing structure at the top of the column.

Abstract: A marine pipelaying system and method for installing an offshore pipeline that includes one or more accessories. The system comprises a vessel (1), a pipeline launch device (10) for launching the pipeline (2) from the vessel in the direction of the seabed, and a clamping device (30) adapted to support the weight of the previously launched pipeline. The system further includes an accessory handling device, which is adapted to receive and support an accessory (40) and allow displacement thereof between an receiving position, wherein the accessory is received by the handling device and a pipeline connecting position, wherein the accessory can be connected to the pipeline (2).

Abstract: Marine pipe laying systems and methods including a hoisting device for laying an offshore pipeline are disclosed. The hoisting device includes a tower with a tower top side provided with cable pulleys and a moveable traveling block displaceably attached to the tower. The traveling block includes first and second blocks with cable pulleys. A clamp attaches to the first block for holding pipe sections and lowering pipelines after the pipe section connects to the pipeline. The hoisting device includes a hoisting means including hoisting cable and a winch. The hoisting cable can be guided over the cable pulleys on the tower and the traveling block. The first and second blocks are adapted to be releasably coupled for traveling along the tower as a unit and for supporting greater pipeline weights. The second block can be locked to the tower to remain stationary while the first block travels along the tower.