摘要:
The method for lowering an object to an underwater installation site, wherein a submersible remotely operated vehicle (ROV) having at least one thruster for providing lateral thrust is interconnectable to an object, entails providing a vessel, having a winch and suspension cable; interconnecting and lowering the object and ROV towards the underwater installation site using a suspension cable, providing at least one anchor near the installation site; interconnecting each anchor and ROV with a positioning wire, while the ROV and object are suspended in the holding position; tensioning and adjusting the length of each positioning wire such that the interconnected ROV and object are positioned with respect to the installation site; and further lowering interconnected object and ROV, which are positioned by at least one positioning wire onto the installation site while keeping the interconnected object and ROV suspended from a suspension cable.
摘要:
The method for lowering an object to an underwater installation site, wherein a submersible remotely operated vehicle (ROV) having at least one thruster for providing lateral thrust is interconnectable to an object, entails providing a vessel, having a winch and suspension cable; interconnecting and lowering the object and ROV towards the underwater installation site using a suspension cable, providing at least one anchor near the installation site; interconnecting each anchor and ROV with a positioning wire, while the ROV and object are suspended in the holding position; tensioning and adjusting the length of each positioning wire such that the interconnected ROV and object are positioned with respect to the installation site; and further lowering interconnected object and ROV, which are positioned by at least one positioning wire onto the installation site while keeping the interconnected object and ROV suspended from a suspension cable.
摘要:
A double drum traction winch of which the rotatable drums are both provided with adjustable grooves is provided. Each drum includes multiple, for example three or more, curved segments, each segment defining a section of a circumferential groove, such that multiple circumferential grooves on the outer surface of the drum are each composed of several curved segments. The curved segments are each movably supported by a core body for movement in a substantial radial direction relative to the rotational axis of the drum. An actuator mechanism for the curved segments is provided, that includes actuators that cause essentially radial displacement of the curved segments, such that the circumference of the grooves can be adjusted.
摘要:
A drilling vessel with a drilling deck includes a drilling vessel floor structure defining the drilling deck and a tubular support assembly that is recessed in the drilling floor structure. The assembly includes a support frame and at least two support tables, wherein the tables have a top surface that forms part of the drilling deck. The tables are each guided by the support frame to allow displacement along a line between an active position for supporting a tubular and a retracted position for passing an object. The tables and the adapters segments supported thereby are coupled, for example via a clamp or a shape-coupling, such that when the tables move from their active position into their retracted position each segment moves with the respective table it is coupled with and the bushing is opened up for passing through an object through the opening between the at least two support tables and the adapter segments they support.
摘要:
The invention relates to a marine pipelaying system comprising a vessel (1) provided with a pipeline launch tower (6). The tower (6) comprises pipe laying equipment defining a tower firing line, and is adapted for launching a pipeline (20) along the firing line into the sea. The system furthermore comprises a hang off module (15) supported in the lower part of the firing line for clamping and supporting the weight of previously launched pipeline (20) as well as a stinger for guiding the launched pipeline (20). The stinger (10) is supported at its upper end in the lower part of the firing line. The stinger is displaceable from the firing line.
摘要:
Hoisting crane (20), comprising a substantially hollow jib (24,-124; 324) having a longitudinal axis, and comprising one or more hoisting cable guides (47, 48, 49; 147; 347). The jib comprises at least one jib leg (29; 129; 329) extending between a jib connection member (26) and a jib hoisting end (27; 127; 327), wherein the at least one jib leg comprises one or more hybrid portions (160; 360) comprising two elongated hollow casings (170; 370) substantially parallel to each other and substantially parallel to the longitudinal axis of the jib, and wherein between the two casings a truss (171 371) is provided to rigidly connect the two castings.
摘要:
A marine pipeline installation system is provided for laying a pipeline and/or installing a subsea riser. The system includes a pipeline guide supported at an elevated position by the tower for guiding the pipeline from a first trajectory extending between the reel and the pipeline guide to the firing line along said tower. The pipeline guide is supported by the tower via an associated guide support frame, the support frame being adapted to allow for displacement of the pipeline guide between a pipelaying position, wherein one end of the pipeline guide is positioned in the firing line, and a retracted, non-operable position. The guide support frame allows movement of the pipeline guide in a combined upward direction and direction towards the reel, such that in the retracted position of the guide support frame the length of the first trajectory is essentially the same as in the pipelaying position.
摘要:
A tailpipe stone dumping vessel (1) for stone dumping through a fallpipe suspended from the vessel, comprising: • 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 handling means (10-14, 31-34) adapted to—while the tower (20) is in its pivotal mode—advance a fall pipe section to the tower and to bring said fallpipe section in alignment with the uppermost end of the suspended fallpipe in order to assemble the fallpipe and adapted to—while the tower is in its pivotal mode—disconnect a fallpipe section from the uppermost end of the suspended fallpipe and advance it to the storage in order to disassemble the fallpipe.
摘要:
A heave compensation system comprises a motor-generator to interact with a load and a control unit being arranged to control operation of the motor-generator. The control unit is arranged to: operate the motor-generator to drive the load in a first part of a wave motion cycle, and operate the motor-generator to regenerate in a second part of the wave motion cycle at least a part of the energy with which the load has been driven in the first part of the wave motion cycle. The heave compensation system comprises an electrical storage element to buffer at least part of the regenerated energy for powering the motor-generator in a following cycle of the wave motion.
摘要:
An amusement device seat includes a seat and a bar construction, moveable between an access position to a passenger fixation position, in which the passenger is fixed in the seat. The assembly further includes a locking device to lock the bar construction at the passenger fixation position. The locking device includes an engagement device to engage and disengage with the bar construction and a guide for the engagement device allowing the engagement device to assume an engagement position between the access position and the passenger fixation position, and allowing the engagement device and the engaged bar construction to move between the engagement position to the passenger fixation position. The locking device includes a fixation device for fixing the engagement device and the engaged bar construction at multiple passenger fixation positions along the guide to accommodate passengers of different sizes.