System and method for assembly and installation of a protective member for a flexible article on a vessel

Abstract

A system and method for assembling and installing protective members onto flexible articles, such as cables, on a vessel are disclosed The system comprises storage receptacles for segments of protective members, assembly areas for creating predetermined lengths of these members, and assembly devices with articulated grippers for segment manipulation. A track system enables movement of the assembly devices, and a chute hatch transfers the assembled members between vessel tiers. A tilt table aligns the protective members with the flexible article for secure attachment. This system enhances the efficiency of cable protection during marine operations and maximizes deck space utilization on cable laying vessels, particularly beneficial for offshore wind farm projects.

Description

[0001] Title: System and method for assembly and installation of a protective member for a flexible article on a vessel.

[0002] Technical area:

[0003]

[0001] The invention relates to a system and method for on vessel assembly and installation of a protective member for a flexible article, where the flexible article may preferably be a cable, such as a power, electrical or data communication cable, but may also be a flexible article having a similar behaviour as a cable, e.g. umbilical’s or flexible pipelines. The protective member may be cable protection system (CPS) and the vessel may be a typical cable-laying vessel, or a vessel adapted for the purpose.

[0004]

[0002] The present invention is in particular applicable to the situation in which a cable needs to be laid in an inter-array arrangement with a need for efficient configuration and deployment of cable protection.

[0005] Background:

[0006]

[0003] Cable laying vessels (CLVs) are specialized ships designed for the installation and maintenance of submarine cables, including power cables, telecommunication cables, and fibre optic cables, typically laid on the ocean floor. Overall, cable laying vessels play a crucial role in the installation and maintenance of submarine cables, enabling the efficient and reliable transmission of power, data, and telecommunications signals across vast distances beneath the ocean's surface.

[0007]

[0004] Typically, cable laying has been employed to lay and install cables between two points. However, recently, and with the addition of large and complex offshore wind farms, the points of which the cables are laid between, and the laying pattern, has become more complex. This type of cable laying is typically known as inter-array cable laying, which refers to the installation of cables within an offshore wind farm that connect the individual wind turbines to each other and to the offshore substation. These cables form a network that allows for the collection and transmission of electricity generated by the wind turbines to the offshore substation, where it is then transformed and transmitted to the onshore grid.

[0008]

[0005] The inter-array cables typically run along the seabed, connecting each wind turbine within the wind farm to a central point, usually the offshore substation, or to each other. These cables are responsible for carrying the electricity generated by the turbines to the substation for further processing and transmission. Inter-array cable laying is a critical component of offshore wind farm development, enabling the efficient collection and transmission of electricity generated by the wind turbines to the offshore substation and ultimately to the onshore grid. Efficient inter-array cable systems are essential for maximizing the energy output of offshore wind farms and ensuring reliable power transmission.

[0009]

[0006] Due to the criticality of the cables in an inter-array wind farm, the cables can be installed with a cable protection system (CPS) at specific areas. A cable protection system for inter-array cable laying in offshore wind farms is designed to safeguard the cables from various risks and hazards that they may encounter during their operational lifetime. These systems are crucial for maintaining the integrity and reliability of the inter-array cables.

[0010]

[0007] These CPS systems are typically segments of protection added to enclose a part of the cable at a crucial area and may comprise outer protection providing physical protection of the cables from external impact, abrasion, kinking and / or excessive bending. The CPS can comprise additional features such as adding or removing buoyancy to the cable. For an inter-array cable, the CPS installation is time consuming and complex, as several segments of CPS needs to be added at different locations on the cable, naturally without a break in the cable. Known systems for installation of CPS are large and demands a large portion of deck area, which ultimately reduces the vessels storage capacity for cable and equipment.

[0011]

[0008] Document W02022271030A1 discloses an apparatus for mounting a buoyancy aid on an elongate line or cable, the apparatus comprising a movable frame on which is mounted a support cradle. The apparatus is situated next to the firing line on the deck of the cablelaying vessel to install the buoyancy aid around the cable. This solution can only install short segments of buoyancy aid and is therefore not suitable for CPS installation. JP 2004166434 A discloses methods and devices for attaching protective pipes to various long objects like cables, water pipes, and oil pipes to be laid on the seabed.

[0012]

[0009] The deck layout of a cable laying vessel (CLV) is carefully designed to accommodate the various equipment and operations involved in cable laying activities. While specific deck layouts may vary depending on the vessel's size, design, and capabilities, typically features found on the deck of a CLV is Cable Storage and Handling areas and Cable Laying Equipment.

[0013]

[0010] Cable Storage and Handling Areas: CLVs are equipped with dedicated spaces for storing and handling cables. These areas may include cable storage holds, carousels, or turntables where the cables are stored and spooled out during installation. The layout of these areas is optimized for efficient access and handling of different types and sizes of cables.

[0014]

[0011] Cable Laying Equipment: The deck of a CLV is equipped with specialized machinery and equipment for cable laying operations. This may include tensioners, winches, and traction systems used to control the tension and speed of the cable during deployment. Additionally, cable handling equipment such as rollers, guides, and sheaves are installed to facilitate the smooth movement of the cable along its path. Furthermore, large portions of the available deck can be used for the quadrant. A quadrant typically refers to a specific segment or section of the cable route or path. It's often used to divide the cable route into manageable portions for planning, installation, and monitoring purposes. Quadrants are particularly useful in larger-scale cable laying operations, such as those involved in offshore wind farms or subsea telecommunications networks. By dividing the cable route into quadrants, project managers can better coordinate activities, allocate resources efficiently, and track progress.

[0015]

[0012] Overall, the deck layout of a cable laying vessel is optimized for efficient cable handling, installation, and maintenance operations while prioritizing safety and reliability in the challenging offshore environment, and as a result, additional deck area for storage and installation of CPS is hard to facilitate.

[0016]

[0013] A typical cable-laying vessel is disclosed in document WQ2020180178A1.

[0017]

[0014] There exists systems for moving and assembling elongated objects as sea, such as disclosed in document WO 9931346 A1, which discloses a device for moving an elongated object, in particular a riser part or a drill pipe cassette. However, said device is not suitable for flexible objects, such as electric cables, as cables come reeled. Furthermore, the system cannot be used to assemble a protective system on a flexible cable.

[0015] The aim of the present invention is to provide a solution that frees up deck area on a cable laying vessel and facilitates the assembly and installation of CPS. Preferably, the CPS can be assembled and installed in various lengths.

[0018] Summary of the invention

[0019]

[0016] It is an object of the present disclosure to mitigate, alleviate or eliminate one or more of the above-identified deficiencies and disadvantages in the prior art and solve at least the above mentioned problem. According to a first aspect there is provided a system for assembly of a protective member for a flexible article on a vessel, wherein the system comprises: at least one storage receptacle configured to store a plurality of segments of protective members, and; at least one assembly area for assembly of one or more segments of protective members into one or more longer segments of protective member, such as a predetermined lengths of protective member, and; at least an assembly device, operatively associated with the at least one assembly area and the at least one storage receptacle, the assembly device comprising an articulated gripper ; wherein the system further comprises at least a track system adjacent to, or along, at least one storage receptacle and the at least one assembly device comprises corresponding tracking means to facilitate movement along the track system.

[0020]

[0017] According to some embodiments, wherein the flexible article is an electric cable, and the protective member is a cable protection system.

[0021]

[0018] According to some embodiments, the articulated gripper has at least three degrees of freedom, and more preferably six degrees of freedom, to locate, reach and assemble the segments of protective members.

[0022]

[0019] According to some embodiments, the system further the system comprises: -an assembly area located on a first tier of a vessel for holding the predetermined length of protective member ; and -a firing line assembly situated on a second tier of the vessel, configured to align the flexible article with the predetermined length of protective member ; and -a chute hatch providing a path between the first tier and the second tier for transferring the predetermined length of protective member from the assembly area to the firing line assembly.

[0023]

[0020] According to some embodiments, the chute hatch system comprises a drive system adapted to displace the chute hatch into at least two positions, open position and closed position, wherein the open position the chute hatch provides the path between the first tier and the second tier for the predetermined lengths of protective members to be transported from the assembly area to an installation area on second tier.

[0024]

[0021] According to some embodiments, the system comprises a firing line segment and an installation area comprises: a tilt table the system comprises a cradle structure and at least a drive system, the tilt table being arranged parallel to the firing line segment, the drive system which is operable to move the cradle structure between a loading position, in which predetermined lengths of protective members may be placed on the cradle structure, and an installation position, in which predetermined lengths of protective members may be placed to be installed to a flexible article on the firing line.

[0025]

[0022] According to some embodiments, the storage receptacle comprises a container structure the system comprises a base and four walls extending up from edges of the base, thereby defining a top opening of the storage container.

[0023] According to some embodiments, track system is comprised of at least two parallel tracks provided on top of upright members, wherein, at least one storage receptacle is provided between the upright members, and; the assembly device is arranged for movement on the track system, whereby the top opening of the storage receptacles is accessible by the articulated gripper.

[0026]

[0024] According to some embodiments, several storage receptacles are arranged in rows and / or columns, and wherein two rows of storage receptacles are arranged on either side of at least one assembly area.

[0027]

[0025] According to some embodiments, the system comprises a control system configured to control the assembly device to retrieve segments of protective members from the at least one storage receptacle, transport the retrieved segments to the at least one assembly area, and join the segments into the predetermined length of protective member.

[0028]

[0026] According to some embodiments, the system comprises a control system configured for operating the tilt table and coordinating the transfer of the predetermined length of protective member to the firing line assembly.

[0029]

[0027] According to a second aspect there is provided a cable laying vessel comprising at least two tiers or decks, wherein the vessel comprises the system according to the first aspect.

[0030]

[0028] According to some embodiments, the vessel comprises a further system 100’ according to any one of the.

[0031]

[0029] According to a third aspect there is provided a method for assembling one or more protective members into a predetermined length of protective member, the method comprising the steps of: a. providing at least one storage receptacle to store a plurality of segments of protective members ; b. providing at least one assembly area for the assembly of the protective members ; c. retrieving, by an assembly device, a segment of protective member from the at least one storage receptacle ; d. transporting the retrieved segment of protective member to the at least one assembly area ; e. joining, in the assembly area, the retrieved segment of protective member with one or more additional segments of protective members to form the predetermined length of protective member, wherein the joining involves aligning and securing ends of adjacent segments; f. repeating steps c to e until the predetermined length of protective member is achieved; and g. transferring the assembled predetermined length of protective member to a deployment location for installation onto a flexible article.

[0032]

[0030] According to a fourth aspect there is provided a method for attaching a predetermined length of protective member to a flexible article, the method comprising the steps of: a. positioning the predetermined length of protective member in an assembly area on a first tier of a vessel ; b. aligning a segment of the flexible article with the predetermined length of protective member in a firing line segment on a second tier of the vessel ; c. transferring the predetermined length of protective member from the assembly area to the firing line segment via a chute hatch that provides a path between the first tier and the second tier ; d. placing the predetermined length of protective member onto a tilt table situated adjacent to the firing line segment ; e. operating the tilt table to move from a loading position to an installation position, wherein the predetermined length of protective member is brought into alignment with the flexible article ; f. securing the predetermined length of protective member to the flexible article by enclosing the flexible article within the predetermined length of protective member ; and g. deploying the flexible article with the attached predetermined length of protective member from the vessel.

[0033]

[0031] In some embodiments, the step of securing the predetermined length of protective member to the flexible article may be carried out using various fastening techniques suited to the marine environment and operational requirements. One approach involves mechanical clamping, where the protective member is equipped with integrated or attachable clamp elements that grip the flexible article once aligned. Alternatively, adhesive bonding may be employed, or the protective member may include molded or machined interlocking features that snap or lock into place around the flexible article, allowing for rapid and tool-free installation. Tension sleeves or shrink-fit collars may also be used, where a sleeve is expanded or contracted to secure the protective member in place, or where heat-shrink or cold-shrink materials are applied to compress the protective member onto the cable. For applications requiring high mechanical strength, bolted or riveted collars may be used to fasten flanged ends of the protective member around the flexible article. The selection of fastening method may depend on factors such as the required mechanical strength, environmental exposure, and whether the installation is intended to be permanent or removable.

[0034]

[0032] Effects and features of the second through fourth aspects are to a large extent analogous to those described above in connection with the first aspect. Embodiments mentioned in relation to the first aspect are largely compatible with the second through fourth aspects.

[0035]

[0033] The present disclosure will become apparent from the detailed description given below. The detailed description and specific examples disclose preferred embodiments of the disclosure by way of illustration only. Those skilled in the art understand from guidance in the detailed description that changes and modifications may be made within the scope of the disclosure.

[0036]

[0034] Hence, it is to be understood that the herein disclosed disclosure is not limited to the particular component parts of the device described or steps of the methods described since such device and method may vary. It is also to be understood that the terminology used herein is for purpose of describing particular embodiments only, and is not intended to be limiting. It should be noted that, as used in the specification and the appended claim, the articles "a", "an", "the", and "said" are intended to mean that there are one or more of the elements unless the context explicitly dictates otherwise. Thus, for example, reference to "a unit" or "the unit" may include several devices, and the like. Furthermore, the words "comprising", "including", "containing" and similar wordings does not exclude other elements or steps.

[0037] Brief descriptions of the drawings

[0038] The above objects, as well as additional objects, features and advantages of the present disclosure, will be more fully appreciated by reference to the following illustrative and non- limiting detailed description of example embodiments of the present disclosure, when taken in conjunction with the accompanying drawings.

[0039] Figure 1a shows an overview of the cable laying vessel showing the hull, monohull structure, and the deployment of a flexible article, such as an electric cable, with protective members and storage means for storing a cable protection system (CPS).

[0040] Figure 1b shows a cross-sectional view of the vessel showing the different tiers or decks, including the storage area below deck with storage reels, and the firing line segment at the stern of the vessel.

[0041] Figure 2 shows a detailed view of the system for assembly of protective members on the vessel, showing the storage receptacle(s) and the assembly area(s).

[0042] Figure 3 shows an isolated view of the storage receptacles arranged in rows and columns, detailing the container structure and the top opening for access.

[0043] Figure 4a-c shows an illustration of the assembly devices in one configuration, showing their movement in relation to the longitudinal direction of the vessel and the deck.

[0044] Figure 4a shows a depiction of the track system adjacent to the storage receptacles and the corresponding tracking means on the assembly device.

[0045] Figure 4b shows a close-up view of the assembly device with the articulated gripper grabbing a protective member from the storage receptacle.

[0046] Figure 4c shows the assembly device placing a protective member end to end or adjacent to a section of a predetermined length of protective members in the assembly area.

[0047] Figure 5 shows an isolated view the chute hatch.

[0048] Figure 6a shows the chute hatch in an open position, showing the path for transferring a predetermined length of protective member from the assembly area to the firing line segment.

[0049] Figure 6b shows the chute hatch in the open position and the process of transferring a predetermined length of protective member to the tilt table aligned with the firing line segment.

[0050] Figure 7a shows a slanted top view of the vessel's deck showing the reels feeding the firing line segments and the assembly devices at work in the assembly areas with the chute hatches in a closed position.

[0051] Figure 7b shows the same view as Figure 7a but with the chute hatches in an open position, showing the path for the protective members to the firing line segment.

[0052] Figure 8a shows a side view of the tilt table in the loading position with the predetermined length of protective members ready for installation.

[0053] Figure 8b shows the tilt table moving the predetermined length of protective members into alignment with the flexible article on the firing line segment for installation.

[0054] Figure 9 shows an operational view of the deck showing the flexible article being moved along the firing line to the tilt table for installation of the protective members. Figure 10 shows a perspective view of the vessel showing the flexible article with the installed protective members being laid out from the aft of the vessel.

[0055] Detailed description

[0056]

[0035] The present disclosure will now be described with reference to the accompanying drawings, in which preferred example embodiments of the disclosure are shown. The disclosure may, however, be embodied in other forms and should not be construed as limited to the herein disclosed embodiments. The disclosed embodiments are provided to fully convey the scope of the disclosure to the skilled person.

[0057] Figure 1a illustrates a cable laying vessel 10 for laying lengths of flexible articles for marine applications. The vessel 10 comprises a hull, here a monohull, providing buoyancy to the vessel 10 and supporting and accommodating all equipment. The vessel 10 is illustrated deploying a flexible article 2, wherein the flexible article 2 is an electric cable, and the protective member 1 and with storage means 3, such as open top containers on a deck, for storing a cable protection system (CPS).

[0058]

[0036] As seen in fig. 1b, the hull of the vessel 10 defines at least three different decks or tiers wherein the cable laying equipment and associated functions are located. Tiers should herein be understood as parts or areas of the vessel with a difference in height, rank, or layer. It may be different decks or defined by structures with an extent in height. Typically, the vessel may comprise a storage area below deck wherein the flexible article is stored. These are typically stored on carousels or reels which are rotatable about a substantially vertical axis. The storage reels are configured to store a certain length of flexible article. In this illustration the storage reels are arranged inside the hull on a lower deck. A cable may be reeled onto a storage unit from an onshore source or from another vessel, and it may be deployed at sea by the firing line segment at the stern of the vessel 10. A firing line segment 8 refers to a designated area, equipment and / or position on the vessel's deck where the cable laying operations are initiated or controlled. It is where the cables are fed out from the vessel into the water or onto the seabed during the laying process. The firing line segment 8 is usually equipped with machinery, such as tensioners or winches, and may have specialized equipment to ensure the proper laying and tensioning of the cables.

[0059]

[0037] The flexible article 2 or flexible longitudinal article is preferably a cable, such as a power, electrical or data communication cable, but may also be a flexible article having a similar behaviour as a cable, e.g. umbilical’s or flexible pipelines, adapted to be wound onto and from a vessel. These cables can span from continent to continents on the seabed or be used as in inter-array arrangements between several elements, such as, but not limited to, generators in an offshore wind farm, between offshore electric installations or offshore units, between an onshore facility and one or more offshore units and the like.

[0060]

[0038] The protective members 1 are typically called cable protection systems (CPS) comprising sleeves or sections of protective material adapted to enclose parts of the flexible article 2. Said protective members 1 can have different properties, such as providing bend stiffening or to protect against frictional wear. The length of the protective member 1 and the distance between each protective members 1 along the flexible article 2 is dependent on the use of the cable and the distance between the installations the flexible article 2 are intended for. Because of this, the protective members 1 are not suitable for being pre-installed on the cable prior to reeling. Furthermore, the invention as disclosed enables the assembly of segments of different lengths or numbers, such as one or more sections of protective members 1 assembled together by the system, wherein sections or segments of protective members 1 can be joint by appropriate means or methods into predetermined lengths, or predetermined numbers of protective members T.

[0061]

[0039] Figure 2 illustrates an aspect, wherein a system 100 for assembly of a protective member 1 for a flexible article 2 located on the vessel 10, the system comprising: at least one storage receptacle 3 to store a number of segments of protective members 1, and at least one assembly area 4 for assembly of one or more segments of protective members 1 into predetermined lengths or numbers of protective members T.

[0062]

[0040] As illustrated in figure 3, the system can comprise two assembly areas 4,4’ are each situated adjacent to the at least one storage receptacle 3. In the illustrated example each assembly areas 4,4’ is flanked by a row of storage receptacle 3 on both sides. The invention may comprise at least one assembly areas 4, such as one assembly area 4, two assembly areas 4, 4’, three assembly areas 4, 4’, 4” etc. At least an assembly device 5 is associated with the assembly areas 4,4’ and the storage receptacle 3. In the illustrated example, one assembly device 5 is associated with each assembly area 4, thus illustrating two assembly devices 5, 5’. The assembly device 5 are preferably capable of reaching one or more storage receptacle 3, retrieve a section of protective members 1 from storage receptacle 3, move said protective members 1 from storage receptacle 3 to the assembly areas 4, and manipulate or assembly several sections of protective members 1 into a predetermined lengths of protective members T. Said predetermined lengths or number of protective members T is comprised of one or more sections of protective members 1 assembled into a total length that is suitable for the desired application. It should be understood that one section of protective member 1 may constitute a predetermined length, or a predetermined number, of protective member T. It should be understood that one or more sections of protective members 1 may constitute a predetermined length, or a predetermined number, of protective member T.

[0063]

[0041] Although the assembly devices 5, 5’ are illustrated as cranes or gantries it should be understood that any type of manipulator comprising an articulated gripper 51 with at least three degrees of freedom, and more preferably six degrees of freedom, to locate, reach and assemble the segments of protective members 1, is suitable. The one or more assembly devices 5, 5’ can be automatically or autonomously controlled via a control system (not shown) or manually controlled by an operator (not shown). The control system being configured to control the assembly device 5 to retrieve segments of protective members) from the at least one storage receptacle 3, transport the retrieved segments to the at least one assembly area 4, and join the segments into the predetermined length of protective member T. The control system may also operate the tilt table 11 and coordinating the transfer of the predetermined length of protective member T to the firing line segment 8. In some embodiments, the system includes a control system implemented using programmable logic controllers (PLCs) or industrial robotic controllers, which are configured to coordinate the operation of the assembly device, the chute hatch, and the tilt table. The control system may be programmed to execute automated retrieval sequences, identifying the location of specific protective member segments within the storage receptacles using position sensors or identification tags. It may also manage the movement of the articulated gripper by calculating optimal trajectories for retrieving, transporting, and aligning segments in the assembly area. Feedback from encoders or vision systems can be used to verify the correct placement and alignment of segments before they are joined. The control logic may include interlocks to ensure that the chute hatch only opens when the tilt table is in a safe position to receive the protective member, and vice versa. The tilt table itself may be operated by the control system to transition between loading and installation positions with precision, using servo motors or hydraulic actuators. The entire system may be monitored and controlled through a human-machine interface (HMI), allowing for manual override, diagnostics, and real-time status updates. Depending on operational requirements, the system may support both semi-autonomous and fully autonomous modes of operation.

[0064]

[0042] Fig. 3 illustrates an isolated view of rows and columns of several storage receptacles 3, wherein the storage receptacles 3 are container structure comprising a base and four walls extending up from edges of the base, thereby defining a top opening of the storage container, and a storage volume adapted to hold several segments of protective members 1. The storage receptacles 3 are preferably removable units such that the vessel can re-stock protective members 1 by removing empty storage receptacles 31 and add new storage receptacles 3 containing segments of protective member 1, from an onshore source or from another vessel. To maximise the storage capacity, several storage receptacles 3 can be arranged in rows and / or columns, and wherein two rows of storage receptacles 3 are arranged on either side of at least one assembly area 4. In a non-illustrated embodiment, storage receptacles 3 can be stacked.

[0065]

[0043] In figure 4, the assembly devices 5 are illustrated in one configuration wherein they are movable in at least one direction in a first plane, said direction is aligned with the longitudinal Each direction of the vessel and said plane is aligned with the deck of the vessel. Each assembly device 5 comprises an articulated gripper 51 adapted at least to grab and release a protective member 1. The articulated gripper 51 can be a robotic arm gripper, end- of-arm tooling, jaw grippers, parallel jaw grippers, suction cup arrays or soft grippers.

[0066]

[0044] As illustrated in fig. 4a, the system 100 may comprise a track system 6 adjacent to, or along, at least one storage receptacle 3 and the assembly device comprises corresponding tracking means 52 to provide movement of the assembly device 5’ in the first plane. Said corresponding tracking means 52 can be wheels or rollers or the like, typically with an associated drive to move said assembly device 5 along the track 6 in relation to the one or more assembly areas 4, 4’ and one or more storage receptacles 3, 3’.

[0067]

[0045] In fig. 4a, the track system 6 is comprised of at least two parallel tracks 61, 6T provided on top of upright members 62, wherein, at least one storage receptacle 3 is provided between the upright members 62, and the assembly device 5 is arranged for movement on the track system 6, whereby the top opening of the storage receptacles 3 is accessible by the articulated gripper 51.

[0068]

[0046] The track system 6 can also be located overhead of the assembly area 4 and storage receptacle 3 as to free up space on the deck and in and around the storage receptacles 3, 3’. The assembly device 5 can be overhead manipulators, such as arms or cranes on rails attached overhead, or different manipulator arms on rails underneath, as illustrated in fig. 3 and 4. In a non-illustrated embodiment, the assembly device 5 may be a fixed manipulator device with a telescopic member comprising the articulated gripper 51, capable of reaching, by extension, one or more assembly areas 4, 4’ and one or more storage receptacles 3, 3’.

[0047] In Fig 4b, the assembly device 5, which can be manned or unmanned, such by an automatic control unit, is illustrated with the gripper 51 grabbing a protective member 1 from the storage receptacle 3, which herein is a open top container. As further illustrated, a section of a predetermined lengths of protective members T is situated in the assembly area 4.

[0069]

[0048] In Fig 4c, the assembly device 5 is illustrated with the gripper 51 placing a protective member 1 from the storage receptacle 3end to end or adjacent to a section of a predetermined lengths of protective members T in the assembly area 4, for the protective member 1 to be assembled into longer length of predetermined lengths of protective member T.

[0070]

[0049] As space is restricted on a vessel, space saving and increased efficiency can be achieved by a layout divided between different tiers or decks. As seen in figure 1b, the reels 9, 9’ are situated in a storage hold below deck, or on a lowermost tier, herein called the third tier T3, and the firing line segment 8 and deployment machinery is situated on a aft deck ,or firing line tier, herein called the second tier T2, partially above the reels 9, 9’, and at least the assembly area 4, the storage receptacles 3, and the assembly devices 5 are situated above the firing line segment 8, on an upper tier, herein called the first tier T 1.

[0071]

[0050] The system 100 is thus adapted to be located on at least two tiers, an upper or first tier T 1 and a second tier T2, wherein the storage receptacle 3, the assembly area 4 and the assembly device 5 is situated on the first tier T1. To transport the predetermined lengths of protective members T from the assembly area 4 to the firring line segment 8 the system can further comprise a chute hatch 7 located in an end of the assembly area 4 to provide a path between the first tier T 1 and the second tier T2. The chute hatch 7 is adapted to displace the chute hatch 7 into at least two positions, open position and closed position, wherein the open position the chute hatch provides the path between the first tier T 1 and the second tier T2 for the predetermined lengths of protective members T to be transported from the assembly area 4 to a protective member installation area on the lower tier. In the illustrated figure, the chute hatch 7 comprising a drive system 71, such as at least one actuator or linear drive, and a frame 72 to be mounted stationary in relation to the vessel, and a hatch 73 hinged in one end to the frame 72, and wherein the drive system 71 is situated between the frame 72 and the hatch 73. Wherein the hatch 73 may further comprise a guiding rail 74 to guide the protective member into correct alignment in the second tier T2.

[0072]

[0051] To install the protective members T on or around the flexible article 2, the flexible article 2 can be pulled through the protective members T or the protective members T can be wrapped around the flexible article 2 or installed by other known means. To align the protective members T with a portion of the flexible article 2, the system can comprise a tilt table 11 on the firing line / second tier T2.

[0073]

[0052] In an embodiment, the tilt table 11 comprising a cradle structure and at least a drive system, and a firing line segment 8. The firing line segment 8 is a part of the firing line that runs parallel to the tilt table 11 , such that the tilt table 11 being arranged parallel to the firing line segment 8. The drive system of the tilt table 11 is operable to move the cradle structure between a loading position, in which predetermined lengths of protective members T may be placed on the cradle structure, and an installation position, in which predetermined lengths of protective members may be placed to be installed to a flexible article 2 on the firing line segment 8.

[0053] As the protective members 1 , when situated in the tilt table 11 , is parallel aligned with the flexible article 2 in the firing line segment 8, the predetermined lengths of protective members T can be displaced from the loading position and into the installation position, wherein the predetermined length of protective member T is aligned with the flexible article 2 for installation.

[0074]

[0054] The invention also relates an aspect of this disclosure wherein the cable laying vessel 10 comprising at least two tiers or decks and wherein the vessel comprises 10 the system 100. Furthermore, an aspect can disclose two systems 100, 100’ arranged in parallel to facilitate the assembly and installation of protective members 1 on two flexible articles 2, 2’. It should be understood that all components, features and embodiments disclosed for a first system 100 is supported for the second system 100’.

[0075]

[0055] Fig. 6a and 6b the chute hatch 7 and the path that is provided by the chute hatch 7 from the assembly area 4 and to the to the firing line segment 8 and tilt table 11 is illustrated with a predetermined length of protective member T during transport.

[0076]

[0056] In fig. 6a, the chute hatch 7 is in the open position, and an assembled predetermined length of protective member T is in mid transport through the guiding rail 74 of the chute hatch 7 to the second tier T2 from the assembly area 4 of the first tier T 1. The predetermined length of protective member T is transported to the tilt table 11 which is parallel aligned with a section of the firing line segment 8, so the tilt table 11 can move the predetermined length of protective member T in line with the longitudinal flexible member 2 when needed.

[0077]

[0057] In fig. 6b, the chute hatch 7, is in the open position, and an assembled predetermined length of protective member T is traversed through the chute hatch 7 to the tilt table 11 which is aligned in parallel with a section of the firing line segment 8, in which the longitudinal flexible member 2 is situated.

[0078]

[0058] Fig. 7a and 7b illustrates two reels 9, 9’ feeding two firing line segments 8, 8’, each with a flexible article 2, 2’. In the figure, two assembly device 5, 5’ assembles protective members 1 into predetermined length of protective members T in respective assembly areas 4,4’ on the top tier T1. In fig. 7a, the chute hatches 7, 7’ are in the closed position. For assembly of the protective members 1 into a predetermined lengths of protective members T, two protective members 1 are aligned and situated adjacent end to end, wherein fastening means can attach one end to the other end of the adjoining protective members 1, thus assembling two protective members 1 into a predetermined length of protective member T comprised of two protective members 1. A predetermined length of protective members T can be comprised of any number of protective members 1, such as one or more.

[0079]

[0059] In fig. 7b, the chute hatches 7, 7’ are in the open position and each assembled predetermined length of protective members T may traversing down the path of the open chute hatches 7, 7’ to the firing line segment 8.

[0080]

[0060] Fig. 8a and 8b illustrates a part of the firing line segment 8 and tilt table 11 wherein the tilt table 11 is in the different positions.

[0081]

[0061] In fig. 8a it is illustrated a firing line segment 8 and an installation area comprising the tilt table 11 comprising a cradle structure with a length for supporting the predetermined lengths of protective members T and at least a drive system, wherein the tilt table 11 is arranged parallel to the firing line segment 8. The drive system, such as actuators, motors or the like, is operable to move the cradle structure between the loading position (fig. 8a) which predetermined lengths of protective members (1’) may be placed on the cradle structure, and an installation position (fig. 8b), in which predetermined lengths of protective members may be placed to be installed to a flexible article 2 on the firing line.

[0082]

[0062] In fig. 8a the predetermined length of protective members T are situated in the cradle structures of the tilt table 11. At this stage, the predetermined length of protective members T are arranged parallel to the path of the flexible article 2 on the firing line segment , or parallel to the pulling line of the flexible article 2, to which they are to be installed, which is representative of the loading position of the tilt table 11 , in which predetermined lengths of protective members T may be placed is the cradle structure.

[0083]

[0063] In fig. 8b the firing line segment 8 and an installation area is illustrated with the tilt table 11 and cradle structure in the loading position with a predetermined lengths of protective members T being moved to the firing line segment 8 and being ready to be installed on the flexible article 2.

[0084]

[0064] Fig. 9 illustrates the deck potion of the vessel 10 with the flexible article 2 being pulled or moved along the firing line segment 8 to the tilt table 11 , wherein the predetermined lengths of protective members T is situated to be installed on the flexible article 2. The predetermined lengths of protective members T is aligned with the flexible article 2 and a pulling line or the like, can pull the flexible article 2 through the predetermined lengths of protective members T. The predetermined lengths of protective members T may be attached and fastened to the flexible article 2 in a number of ways. One example of the installation and attachment is to attach a mechanical gripper or tension sleeve, which grips or tighten around an object when tension is applied, to the flexible article 2 when the flexible article 2 is situated in the firing line segment 8 in front of the predetermined length of protective members T. The flexible article 2 can then be pulled via pulling means attached to the tension sleeve. When the flexible article 2 is threaded through the predetermined lengths or numbers of protective member T, the tension sleeve can then be released and the protective members 1 encompass the flexible article 2, which is then ready for deployment at sea.

[0085]

[0065] In fig. 10, the flexible article 2 with the predetermined length of protective members 1 are laid out from aft of the vessel 10.

[0086]

[0066] The system, designated as 100, 100’, may comprise: a. Storage Receptacles: At least one storage receptacle 3 is provided for storing multiple segments of protective members 1. These receptacles are designed to facilitate easy access and retrieval of the segments. b. Assembly Areas: One or more assembly areas 4 are designated for the assembly of protective member segments 1 into predetermined lengths T. These areas are structured to support the assembly process. c. Assembly Device: An assembly device 5 with an articulated gripper 51 is operatively associated with both the storage receptacles 3 and the assembly areas 4. The gripper is capable of movement with at least three degrees of freedom, and in some aspects, up to six degrees of freedom, to accurately locate, reach, and assemble the segments. d. Track System: A track system 6 is provided adjacent to, above, under, or along the storage receptacles 3 and the assembly device 5. The assembly device includes tracking means 52 to move along the track system, allowing for efficient navigation and positioning.

[0087]

[0067] The system, designated as 100, 100’, may further comprise: e. Tiered Vessel Structure: The system is integrated into a cable laying vessel 10 with at least two tiers or decks. The assembly area 4 is located on a first tier T 1 , while a firing line segment 8 is situated on a second tier T2. A chute hatch 7 provides a path for transferring the assembled protective members between tiers. f. Chute Hatch: The chute hatch 7 includes a drive system 71 that allows it to move between open and closed positions, facilitating the transfer of protective members. g. Tilt Table: A tilt table 11 with a cradle structure is included, which can move between a loading position and an installation position. This table is parallel to the firing line segment 8 and aids in the installation of protective members onto flexible articles. h. Control Systems: The system comprises control systems configured to operate the assembly device 5, the tilt table 11 , and coordinate the transfer of protective members to the firing line segment 8.

[0088]

[0068] The invention may also relate to a method for Assembling Protective Members. The method involves: i. Storing and retrieving segments of protective members from the storage receptacle 3. j. Transporting and joining these segments in the assembly area 4 to form a predetermined length. k. Repeating the process until the desired length is achieved. l. Transferring the assembled protective member to a deployment location for installation.

[0089]

[0069] Method for Attaching Protective Members

[0090]

[0070] The invention may also relate to a method attaching the protective members. The method involves: m. Positioning and aligning the protective member with a flexible article on the vessel. n. Transferring the protective member to the firing line segment 8 via the chute hatch 7. o. Using the tilt table 11 to bring the protective member into alignment with the flexible article. p. Securing the protective member to the flexible article. q. Deploying the flexible article with the attached protective member from the vessel 10.

[0091]

[0071] The person skilled in the art realizes that the present disclosure is not limited to the preferred embodiments described above. The person skilled in the art further realizes that modifications and variations are possible within the scope of the appended claims.

Claims

Claims:

1. A system (100) for assembly of a protective member (1) for a flexible article (2) on a vessel (10), the system comprising: at least one storage receptacle (3) configured to store a plurality of segments of protective members (1), and; at least one assembly area (4) for assembly of one or more segments of protective members (1) into predetermined lengths of protective members (1’), and; at least an assembly device (5), operatively associated with the at least one assembly area (4) and the at least one storage receptacle (3), the assembly device (5) comprising an articulated gripper (51); the system further comprising at least a track system (6) adjacent to, or along, at least one storage receptacle (3) and the at least one assembly device (5) comprises corresponding tracking means (52) to facilitate movement along the track system (6).

2. The system according to claim 1 where the flexible article (2) is an electric cable, and the protective member (1) is a cable protection system (CPS).

3. The system according to any one of the previous claims, where the articulated gripper (51) has at least three degrees of freedom, and more preferably six degrees of freedom, to locate, reach and assemble the segments of protective members (1).

4. The system according to any one of the previous claims, the system further comprising:-an assembly area (4) providing an area for assembly; and-a firing line segment (8) configured to align the flexible article (2) with the predetermined length of protective member (T); and-a chute hatch (7) for transferring the predetermined length of protective member (T) from the assembly area (4) to the firing line segment (8).

5. The system according to claim 4, where the assembly area (4) is located on a first tier (T1) of a vessel (10); and the firing line segment (8) is situated on a second tier (T2) of the vessel (10); and the chute hatch (7) provides a path between the first tier (T1) and the second tier(T2).

6. The system according to claim 4 or 5, where the chute hatch (7) comprises a drive system (71) adapted to displace the chute hatch (7) into at least two positions, open position and closed position, wherein the open position the chute hatch provides the path between the first tier (T1) and the second tier (T2) for the predetermined lengths of protective members (T) to be transported from the assembly area (4) to an installation area on second tier (T2).

7. The system according to any one of the previous claims, where the system comprises a firing line segment (8) and an installation area comprises:-a tilt table (11) comprising a cradle structure and at least a drive system, the tilt table (11) being arranged parallel to the firing line segment (8), the drive system which is operable to move the cradle structure between a loading position, in whichpredetermined lengths of protective members (1’) may be placed on the cradle structure, and an installation position, in which predetermined lengths of protective members may be placed to be installed to a flexible article (2) on the firing line.

8. The system according to any one of the previous claims, where the storage receptacle (3) comprises a container structure comprising a base and four walls extending up from edges of the base, thereby defining a top opening of the storage container.

9. The system according to any one of the previous claims, where the track system (6) is comprised of at least two parallel tracks (61 , 6T) provided on top of upright members (62), wherein, at least one storage receptacle (3) is provided between the upright members (62), and; the assembly device (5) is arranged for movement on the track system (6), whereby the top opening of the storage receptacles (3) is accessible by the articulated gripper (51).

10. The system according to any one of the previous claims, where several storage receptacles (3) are arranged in rows and / or columns, and wherein two rows of storage receptacles (3) are arranged on either side of at least one assembly area (4).

11. The system according to any one of the previous claims, where the system comprises a control system configured to control the assembly device (5) to retrieve segments of protective members (1) from the at least one storage receptacle (3), transport the retrieved segments to the at least one assembly area (4), and join the segments into the predetermined length of protective member (T).

12. The system according to any one of the previous claims, where the system comprises a control system configured for operating the tilt table (11) and coordinating the transfer of the predetermined length of protective member (T) to the firing line segment (8).

13. A cable laying vessel (10) comprising at least two tiers or decks, where the vessel comprises the system (100) according to any one of the claims 1-12.

14. The cable laying vessel (10) according to claim 13, where the vessel comprises a further system 100’ according to any one of the claims 1-12.

15. A method for assembling one or more protective members (1) into a predetermined length of protective member (T), the method comprising the steps of: a. providing at least one storage receptacle (3) to store a plurality of segments of protective members (1 ); b. providing at least one assembly area (4) for the assembly of the protective members (1 );c. retrieving, by an assembly device (5), a segment of protective member (1 ) from the at least one storage receptacle (3); d. transporting the retrieved segment of protective member (1 ) to the at least one assembly area (4); e. joining, in the assembly area (4), the retrieved segment of protective member (1) with one or more additional segments of protective members (1 ) to form the predetermined length of protective member (T), wherein the joining involves aligning and securing ends of adjacent segments; f. repeating steps c to e until the predetermined length of protective member(s) (T) is achieved; and g. transferring the assembled predetermined length of protective member (T) to a deployment location for installation onto a flexible article (2).

16. A method for attaching a predetermined length of protective member (1’) to a flexible article (2), the method comprising the steps of: a. positioning the predetermined length of protective member(s) (1’) in an assembly area (4) on a first tier (T1 ) of a vessel (10); b. aligning a segment of the flexible article (2) a firing line segment (8) on a second tier (T2) of the vessel (10); c. transferring the predetermined length of protective member (T) from the assembly area (4) to the firing line segment (8) via a chute hatch (7) that provides a path between the first tier (T1) and the second tier (T2); d. placing the predetermined length of protective member (T) onto a tilt table (11 ) situated adjacent to the firing line segment (8); e. operating the tilt table (11) to move from a loading position to an installation position, wherein the predetermined length of protective member (T) is brought into alignment with the flexible article (2); f. securing the predetermined length of protective member (T) to the flexible article (2) by enclosing the flexible article (2) within the predetermined length of protective member (T); and g. deploying the flexible article (2) with the attached predetermined length of protective member (1’) from the vessel (10).

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