315 results about "Lightering" patented technology

The utility model belongs to the technical field of cast-in-situ bored pile construction, and provides a steel casing pile sinking positioning and guiding device which comprises a base frame assembly, a transverse moving guide rail assembly, a longitudinal moving guide rail assembly and a pile embracing limiter. The steel casing pile sinking positioning and guiding device is reasonable in structural design, the guiding device is fixed to a barge body of a barge, a crawler crane on the barge is matched with a vibratory hammer to hoist and hit the steel casing, the limitation that a large special pile driving barge or a construction platform needs to be set up in traditional overwater steel casing pile sinking construction is solved, and the construction efficiency is improved. And meanwhile, the position, relative to a barge body, of the pile embracing limiting device can be adjusted, the guide position of the steel casing can be adjusted, the requirement for the barge moving positioning precision of the barge is lowered, the time for moving the barge, positioning and twisting anchor cables is saved, and the comprehensive pile sinking efficiency of the steel casing is improved.

The invention relates to the technical field of HDPE pipeline shipping, in particular to an HDPE pipeline mooring and positioning system and method.The HDPE pipeline mooring and positioning system comprises a barge, a crane ship, a tugboat, a plurality of auxiliary ships and a plurality of positioning anchors, the tugboat is used for dragging an HDPE pipeline, the barge and the crane ship are used for positioning the HDPE pipeline from the two ends of the HDPE pipeline, and the auxiliary ships are used for positioning the HDPE pipeline from the two ends of the HDPE pipeline. The positioning anchors are symmetrically arranged on the two sides of the HDPE pipeline and used for positioning the HDPE pipeline, and the auxiliary ship is used for moving the HDPE pipeline. Compared with a traditional steel pipe pile construction technology, the mooring positioning system provides stable positioning points through the positioning anchors symmetrically arranged on the two sides of the HDPE pipeline, construction steps are simplified through cooperative operation of a tugboat, a barge, a crane ship and an auxiliary ship, particularly, complex steel pipe pile mounting and dismounting do not need to be conducted, the construction time is greatly shortened, and the construction efficiency is improved. And the construction efficiency is obviously improved.

The invention provides an intelligent goods tracking method and system for a combined fleet, and relates to the technical field of shipping transportation, and the method comprises the steps: 1, deploying a goods state monitoring device on a barge and an auxiliary function ship of the combined fleet, and collecting the physical state parameters and position information of goods in real time, the monitoring device comprises a first target detection point and a second target detection point; and step 2, the fleet central control platform integrates and analyzes the physical state parameters and the position information of the goods, the temperature data of the first target detection point and the position offset data of the second target detection point to generate a target correction value. According to the invention, through real-time monitoring, intelligent analysis, collaborative response and dynamic optimization, complete-flow accurate tracking, efficient management and risk prevention and control of cargos of the combined fleet are realized.

The invention discloses a control method and system based on self-adaption MPC large structure dynamic sliding shipment, the system comprises a sensor module, a computer system and a central controller, a pressure sensor is arranged between the upper end of a hydraulic sliding shoe and a base plate of an offshore oil and gas platform module and used for collecting the pressure value of a structure supporting point; the total station is arranged around a ship deck and used for monitoring the height change of each sliding shoe relative to a wharf; the liquid level sensors are arranged at four corners of the hull and used for collecting draft data of the four corners of the hull. The inclinometers are mounted on a bow and two sides of the barge and are used for collecting six-degree-of-freedom inclination angles of the barge; the computer system carries out calculation through a self-adaptive MPC control algorithm to obtain an optimal control strategy; and the central controller dynamically adjusts the ballast water distribution and the hydraulic sliding shoe height of the ship based on the optimal control strategy. Therefore, the ship loading safety, continuity and efficiency can be remarkably improved, the ship loading time is shortened, and the damage risk of the structure is reduced.

The invention discloses a loading, transporting and unloading integrated giant multifunctional material guarantee ship and a using method, and belongs to the technical field of material guarantee ships. A loading, transporting and unloading integrated giant multifunctional material guarantee ship comprises a ship body and further comprises a dredge pump cabin, a diesel engine cabin, an intermediate deck, a double-side loading system, a triangular cabin and a bow blowing device, an in-cabin dredge pump and a flushing pump are arranged on a cabin bottom deck of the dredge pump cabin, and a diesel engine is arranged on a cabin bottom deck of the diesel engine cabin. The double-board loading system comprises loading pipes arranged at the left and right board positions and connected with a dredge pump cabin, a winch hoisting device and a quick connector module used for achieving connection of a floating pipe of a cutter suction dredger and the loading pipes. The hydraulic loading and unloading mode is adopted, the problems that a traditional sand transporting mode is not suitable for long-distance transportation, the loading and unloading efficiency is low or the traditional sand transporting mode depends on wharf facilities and anchorage ground lightering can be effectively solved, and the operability and the operation efficiency of long-distance sand transporting business are greatly improved.

The invention discloses an offshore photovoltaic support loading and unloading type shipping and stacking tool and a lightering operation method thereof. The tool comprises a barge widening and reinforcing tool, a photovoltaic support mounting tool and a stacking tool. The barge widening and reinforcing tool is composed of a plurality of sets of extending mechanisms which are symmetrically arranged on ship boards on the left side and the right side of a barge, and each set of extending mechanism is composed of a plurality of extending assemblies. The photovoltaic support installation tool comprises a plurality of sets of guide assemblies composed of a plurality of guide pipes, the guide assemblies are distributed on the extension assembly and the deck, and supporting legs are further arranged at the centers of the guide pipes. The stacking tool is composed of a plurality of stacking assemblies, each stacking assembly is composed of a plurality of stacking supports, the top sides of the stacking supports are provided with support guide pipes and support supporting legs which are the same as and correspond to the guide pipes and the supporting legs respectively, and the bottom sides of the stacking supports are connected with the guide assemblies. The tool is simple in structural design and convenient to assemble, disassemble and operate, stacking arrangement and fixation of the offshore photovoltaic support in the height direction of the barge can be achieved, the transportation efficiency is improved in the lightering operation, and the cost is reduced.

The invention provides a floating dock lightering analysis method which comprises the steps that finite element models of a ship to be lighted and a bearing beam are established in finite element analysis software, the bearing beam is arranged on a bearing trolley and can move along with the bearing trolley, and a plurality of cushion blocks used for supporting the ship are arranged on the bearing beam; calculating the reaction force of each cushion block, and arranging the reaction force to form a reaction force distribution diagram; judging whether the bearing beam with the deformation degree exceeding the allowable standard exists or not; in the lightering process, a plurality of typical stowage working conditions are selected, overall stress analysis is conducted on the floating dock under the typical stowage working conditions, and a floating dock stowage scheme is determined; a finite element model of the floating dock is established, a plurality of typical stress working conditions are selected in the lightering process, and finite element analysis is conducted on stress distribution and deformation of the floating dock structure under the typical stress working conditions. According to the technical scheme, the calculation efficiency and simulation precision of the floating dock lightering process can be effectively improved, and the safety of the ship during floating dock lightering is better ensured.

A desalination system includes a watertight tank built into a barge to house reverse-osmosis tubes and flooded with cooling water or fluid a closed-loop water or a fluid circulation system that circulates water or fluid inside the watertight tank to cool the reverse-osmosis tubes and transfer the heat to a seawater radiator mounted on the exterior of the barge to cool the cooling water or fluid; a reverse-osmosis system consisting of a seawater feed pump sucking in seawater through wedge wire screens attached to an inlet or inlets in the hull of the barge, and pumping that water into a plurality of reverse-osmosis tubes housed within the watertight tank and configured to process the seawater passing through the reverse-osmosis membrane to freshwater water stream and a brine water stream; and a high-density polyethylene (HDPE) pipeline.

The invention discloses a pushing boat and barge efficient combination butt joint device which comprises a barge butt joint piece arranged on a barge, the barge butt joint piece comprises a barge butt joint matching piece and a matched butt joint adjusting piece, the barge butt joint matching piece is arranged on the barge and driven by the connected matched butt joint adjusting piece, and the barge butt joint matching piece is arranged on the barge and driven by the matched butt joint adjusting piece; the vertical movement is realized as required; the pushing butt joint piece is arranged on the pushing ship, the pushing butt joint piece comprises a pushing telescopic power piece and a butt joint pushing piece, and the pushing telescopic power piece is arranged on the pushing ship and drives the butt joint pushing piece connected with the pushing ship to be connected with the barge butt joint matching piece in a matched mode, so that the pushing ship and the barge are combined in a butt joint mode. The device is reasonable in structural design, high in automation degree, high in butt-joint success rate of the pushing ship and the barge, high in combined butt-joint efficiency and small in influence of sea surface waves on the combined butt-joint process.

The invention belongs to the technical field of ocean information engineering, and discloses a joint simulation method for a structure collision effect in a floating installation process of an offshore converter station. The joint simulation method comprises the following steps: S1, setting sea condition parameters of an operation sea area and geometric parameters and material parameters of a floating system; s2, initializing a hydrodynamic model and a multi-body model; s3, solving the barge motion equation under the current time step by using the hydrodynamic model to obtain barge motion data; s4, calculating an LMU contact force and a DSU contact force under the current time step according to the barge motion data in the step S3, feeding back the LMU contact force and the DSU contact force to the hydrodynamic model, and updating the external load of the barge; and S5, repeating the steps S3-S4 until simulation in the set time step is completed, and then outputting a simulation result. According to the method, precise calculation of dynamic movement of the floating body and precise simulation of complex contact-nonlinear restoring force of the LMU can be considered, and high-precision simulation analysis of the whole floating installation process of the offshore converter station is achieved.

The invention discloses an SPMT shipping transportation method for a floating mounting module. The SPMT shipping transportation method for the floating mounting module comprises the following steps that S1, preparatory work is completed in advance; s2, the SPMT transport vehicle is driven to the position below the floating support mounting module; s3, after the SPMT transport vehicles make contact with the lower surface of the transport lifting beam, all columns of SPMT transport vehicles are connected together, and a hydraulic supporting system is formed; s4, lifting the floating support mounting module and completely separating the floating support mounting module from the final assembly cushion pier; s5, the SPMT transport vehicle advances towards the barge in-place position through the connecting trestle; s6, when the SPMT transport vehicle arrives at the position above the sea transportation buttress; and S7, the SPMT transport vehicles are operated to reduce the height, the heights of the floating support installation modules are reduced accordingly, the floating support installation modules make contact with the marine transportation buttresses, the SPMT transport vehicles are driven away from the lower portions of the floating support installation modules in sequence, the SPMT transport vehicles return to the wharf through the connecting trestle, and shipping operation of the floating support installation modules is completed. According to the SPMT shipping transportation method for the floating mounting module, the working efficiency is greatly improved, and the cost is reduced.

The utility model belongs to the technical field of ships, and particularly relates to a ship landing refitting device which comprises a slipway. The slipway is arranged on a wharf, and two first rails are symmetrically arranged on the slipway; two second rails are symmetrically arranged on the launching barge, and a rail trolley system is arranged on the two second rails; the mooring system is arranged on the launching barge, and the anchoring system is arranged on the launching barge. By arranging the launching barge and the rail trolley system, a ship can be supported and move on the second rails, by arranging the mooring system and the anchoring system, the launching barge and a wharf can be in a relatively static state, the rail trolley system moves on the two first rails and the two second rails, and the ship is transported to a berth. The purpose that the ship is constructed from the underwater area to the land area slipway is achieved, the design form is convenient to construct, the special requirements for ship refitting and repairing are met, and meanwhile the cost is low.

The present invention provides a novel offshore structure, referred to as Super Shallow Water Structures (SSS), designed and manufactured for installation in shallow water depths ranging from 3.5 meters to 50 meters. The said structure is a self-floating structure that can be towed from a fabrication yard or dry dock to an offshore site and lowered into position without requiring heavy lifting vessels or barge-based operations. The structure is equipped with a unique pontoon foundation (1) that facilitates self-floating transport and lowering through controlled water or grout filling. The structure (SSS) serves as an alternative to traditional offshore structures. It also provides a viable solution for replacing jacket and pile foundations for heavy topsides structures.

Delivery of a high volume of floating systems for wind turbines can make floating wind economic. The delivery can involve the standard design of sections, such as “tubes” or “cans,” comprising a rolled plate and ring stiffeners. The delivery can then involve the transportation of the sections in block to an assembly site that is closer to the planned installation point. The sections are used to manufacture floating vessels, such as semi-submersibles, buoyant towers, and / or spars, at the assembly site, which can include a barge with cranes. For semi-submersibles, the delivery can then involve the installation of the Tower, the nacelle, and blades using the barge cranes. Alternatively, for spars or buoyant towers, the nacelle and blades can be installed at an off-shore location using a platform, such as a standard jack-up vessel or a crane jacket.

The invention belongs to the technical field of bridge superstructure installation and construction, and particularly relates to a construction device and method for installing a bridge superstructure through a modular barge combined automatic jacking system. Firstly, the operation platform is formed by splicing the modular barges, then the automatic jacking system and the steel platform are installed on the operation platform, the steel platform is used for loading and supporting a to-be-installed beam section on a beam section splicing and transferring wharf, the modular barges are driven by tugs to combine the automatic jacking system and the to-be-installed beam section to move to a designed erection position, and the beam section is assembled and transported. And the to-be-installed beam section is erected on the beam bottom support through the positioning piles and the anchor mooring system, and installation of the bridge superstructure is completed. The method is simple in installation and construction, and can effectively improve the installation and construction effect of the bridge superstructure. In the installation and construction process of the bridge superstructure, the modular barges are connected into a whole through the multiple sets of cross beams, the influences of water flow and waves can be effectively reduced, and the stability of the modular barges is improved. The device is simple in structure, reasonable in design, convenient to use and operate and good in using effect.

The utility model provides an offshore floating barge type photovoltaic energy storage power station. A barge is composed of a photovoltaic system arranged on a two-layer deck, an energy storage system and a wireless charging and discharging system arranged on a first-layer deck, and a control protection and energy management system arranged on a bottom-layer cabin. The photovoltaic system can generate power to charge the energy storage system when the barge sails on the sea and is berthed in the daytime; the energy storage system can run to a land power grid with sufficient electric quantity to absorb electric energy to charge an energy storage container, and can also run to power-lacking power grids such as islands or offshore working platforms to discharge electric energy to supply power to the power grids; and the control protection and energy management system is used for control of system switches of the whole station, relay protection and energy flow direction control. According to the utility model, the construction cost of the submarine cable can be reduced, the technical limitation range of the laying length of the alternating-current submarine cable is broken through, the power supply of a deep and far sea working platform is guaranteed, and the working range of an offshore working platform is expanded.

The invention provides a barge type depth determination method based on structure weight control, and the method comprises the steps: considering the sensitivity of a transverse section modulus and a section inertia moment in a barge to the change of the type depth, adjusting the type depth, carrying out the structural design, checking the total longitudinal strength, and calculating the structure weight, so as to obtain the optimal type depth which meets the standard requirements and is the lightest in structure weight. The problems that an existing barge structure is too heavy in weight and consumes a large amount of steel, loading is reduced when the displacement is fixed, more ship resources are occupied, and economy is not achieved are solved, and barge type depth value selection with the lightest structure weight is achieved.

Systems and methods for utilizing nuclear-based marine craft to generate electricity for external or grid usage are disclosed. In accordance with some embodiments, the system may include a nuclear-based marine craft having a propeller shaft and an electrical generator coupled external to the marine craft and configured to transmit generated electricity. In accordance with some other embodiments, the system may include a nuclear-based marine craft having a nuclear reactor and a turbine, a dock or barge having its own turbine and electrical generator, a steam outlet pipe connecting the nuclear reactor to the dock or barge turbine, and a steam inlet pipe connecting the dock or barge turbine back to the nuclear reactor, whereby heated steam from the nuclear reactor spins the dock or barge turbine, which then powers the electrical generator on the dock or barge to generates electricity.

The invention belongs to the technical field of ship design, and particularly relates to an anti-rolling auxiliary embarkation device for a floating power generation platform. Comprising anti-rolling auxiliary embarkation devices which are arranged on the port and the starboard of the ship and can effectively reduce rolling of the ship body and embarkation risks of personnel. The anti-rolling auxiliary embarkation device is arranged at the position which is 1 / 2 of the ship length away from the stern. The anti-rolling auxiliary embarkation device comprises a buoyancy tank, a ballast tank, a buoyancy tank handrail, a truss, an embarkation ladder, a mooring bollard, a lug plate, a pin shaft and a locking piece. The method has the beneficial effect that the safety risk of personnel embarkation is reduced by adopting the method. The embarkation buoyancy tank is connected with the power generation platform through a detachable pin shaft, the buoyancy tank platform is basically flush with the embarkation deck of the personnel connection ship, and the buoyancy tank platform and the embarkation deck of the personnel connection ship are connected into a whole through the bollard, so that the embarkation height is reduced, and the embarkation risk of operators is greatly reduced. The anti-rolling auxiliary embarkation device is adopted, platform rolling is restrained, embarkation risks of operators are reduced, and the operation safety of the floating power generation platform is guaranteed.

The invention discloses a barge type floating fan capable of avoiding resonance between a wave period and the fan, which comprises a floating body and the fan, and the floating body is connected with the fan; a penetrating through groove is formed in the middle of the floating body, a first adjusting plate and a second adjusting plate which can move in a crossed mode are arranged in the extending direction of the penetrating through groove through a first sliding rail locking mechanism, and the penetrating through groove is divided into a plurality of size-adjustable damping pools through the first adjusting plate and the second adjusting plate. A plurality of water permeable holes communicated to the penetrating through groove are formed in the periphery of the floating body; a plurality of fixed ballast tanks, a plurality of variable water ballast tanks and a plurality of buoyancy tanks are sequentially arranged on the floating body in the extending direction; the periphery of the floating body is provided with an anti-swing plate capable of sliding in the extending direction through a second sliding rail locking mechanism. Through active cooperative control of the adjustable damping pool, the stabilization plate and the permeable structure, compared with a single adjusting mechanism, the fault tolerance rate is higher, the dynamic response precision and the extreme environment adaptability are remarkably improved, and wave energy dynamic dissipation and floating body resonance risk avoidance are achieved.

The invention provides an intelligent combined fleet cooperative stability control method and system, and relates to the technical field of shipping transportation, and the method comprises the steps: 1, deploying a pressure sensor at the installation position of a mechanical-hydraulic lock catch, deploying a deformation sensor at a barge deck, deploying attitude sensors at the bow and stern of a ship, and deploying an attitude sensor at the installation position of a mechanical-hydraulic lock catch; collecting lock catch hydraulic pressure value, barge structure deformation quantity and ship pitch angle data in real time; and 2, the hydraulic pressure value, the structural deformation quantity and the ship pitch angle data are used for generating a ship state parameter set according to each barge and the associated lock catch, and the ship state parameter set comprises the lock catch stress peak value, the barge load distribution gradient and the pitch angle offset. Through real-time sensing, dynamic adjustment and cooperative control, the cooperative stability of the combined fleet under the complex sea condition is effectively improved, and the dynamic instability risk of the connection structure is reduced.

The invention is suitable for the technical field of ship control, and provides a berthing motion control method of a towing system, the towing system, equipment and a medium, the method comprises the steps that state information of the towing system at the current moment is acquired, and the state information comprises the state of a tugboat, the state of a barge and the towing cable pulling force between the tugboat and the barge; generating a state space vector of the towing system according to the state of the tugboat and the state of the barge; inputting the state space vector and the towing cable tension into a pre-established Markov decision process model to obtain an action space vector of the tugboat; and carrying out berthing control on the towing system based on the action space vector. According to the invention, efficient, stable and safe barge dragging system berthing operation can be realized.

The utility model relates to an immersed tube lowering system applied to an immersed barge, and belongs to the technical field of immersed tunnels. The device comprises two pulley brackets respectively arranged at the bow and the stern of a ship body, two fixed pulley blocks respectively arranged on the two pulley brackets, lifting appliance pulley blocks respectively connected with the two fixed pulley blocks, two guide pulley blocks respectively arranged on the sides, close to each other, of the two fixed pulley blocks, and two immersed tube winches respectively arranged at the bow and the stern of the ship body, the steel wire rope is connected with the immersed tube through the guide pulley block, the fixed pulley block and the sling pulley block at the other end of the ship body by the immersed tube winch at any end of the ship body, so that the immersed tube is lowered. The utility model solves the problem of arrangement of the sinking winch on the deck surface of the compact space of the existing sinking barge.

The invention relates to an efficient ship unloading direct barge wharf loading and unloading process which comprises a bridge type grab bucket ship unloader, a movable ship loader, a belt conveyor, a rail, a transfer station, a bulk cargo ship, a bulk cargo ship berth, a barge and a barge berth. The barge berth and the movable ship loader are arranged between the bulk cargo ship berth and the bridge type grab ship unloader and the transfer station; the belt conveyors comprise a wharf belt conveyor and a relay belt conveyor, and loading and shunting are carried out through a three-way bifurcated chute below a hopper at the head of a ship loader tripper car, so that unloaded ships can be directly loaded or directly conveyed to the rear part. When the three-way bifurcated chute is shunted to a ship loader boom belt conveyor, the three-way bifurcated chute is a ship unloading direct shipping process, and when the three-way bifurcated chute is shunted to a wharf belt conveyor, the three-way bifurcated chute is directly conveyed to a rear process for ship unloading. According to the efficient loading and unloading process for the ship unloading and direct barge wharf, specialized operation of ship unloading and direct barge is achieved, the operation efficiency of ship unloading and ship loading is improved, and meanwhile the environment-friendly level of loading and unloading operation in an operation area is improved.

The present invention provides a control device and method for the folding and releasing of a barge gangway, wherein the device includes a hydraulic device and a winch device, which cooperate to complete the folding and releasing of the barge gangway; by controlling the hydraulic device to close the rope tension on the winch device to control the hydraulic cylinder to push out the gangway when the gangway is connected to the inner side, the speed of the two winch mechanisms is synchronized, and the turning angle of the gangway is obtained according to the calculated rope, the synchronous speed is adjusted, the speed is reduced at the beginning and end, and the speed is increased in the middle. This application is not limited by the operating level of the personnel, and is fully intelligently controlled.

The invention relates to a method for measuring the weight center of gravity of a super-large structural member, which adopts a suspension method to hoist the super-large structural member and performs calculation by matching with the following formula: obtaining a vertical center ZG value of the super-large structural member. According to the measuring method, a mode of combining horizontal hoisting and inclined hoisting is adopted, and the average value is calculated in a mode of taking the average value through three times of hoisting, so that the weight center-of-gravity data of the super-large structural member can be obtained, and accurate data values are provided for ocean transportation, subsequent lightering, installation and other work of the super-large structural member.

The utility model discloses a marine steel pipe pile transport frock, including two frock stand columns, multiple pairs of layer branch leg, bottom layer support pad and multiple high layer support pads, bottom layer support pad is the horizontal strip beam body of setting, and its top surface has multiple arc through grooves along its length direction equidistance and is set up, two frock stand columns are fixed at the both ends of bottom layer support pad, multiple pairs of layer branch leg are set up on the opposite side wall of two frock stand columns from bottom to top interval, and multiple high layer support pads are set up on multiple pairs of layer branch leg respectively, every high layer support pad includes a horizontal strip beam body, and its top surface and bottom surface have multiple arc through grooves along its length direction equidistance and are set up respectively, and the both ends of beam body are equipped with the connecting lug board connected with a pair of layer branch leg, this marine steel pipe pile transport frock can realize the layering of batch steel pipe pile on barge, not only good integrity and stability, and be applicable to different diameter or the steel pipe pile of variable diameter, and the barge operation efficiency is high, and the cost is low.

A long-distance underwater transportation method for immersed tubes, the steps of which are as follows: S1. After the prefabrication of the immersed tube segments is completed, preparations before launching are carried out; S2. Water is injected into the dry dock, and the immersed tube floats under the action of buoyancy to complete the launching of the immersed tube from the dock; S3. The towing barge tows the immersed tube and floats it along the waterway in the shallow sea area; S4. After the towing barge tows the immersed tube into the deep sea area, the immersed tube is towed to the installation position; S5. Before the immersed tube enters the installation position, the immersed tube floats up, and after floating up, the freeboard height is adjusted and the towing cable is adjusted; S6. The towing barge tows the immersed tube and floats it along the waterway to the designated installation position, and after basic positioning, mooring is carried out. By submerging the immersed tube segments for underwater transportation, the present invention avoids the damage to the structure caused by the extreme deep-sea environmental loads during the transportation process, realizes the long-distance transportation of the immersed tube across the deep sea area, and the present invention realizes the reuse of the existing immersed tube tunnel prefabrication factory, saving the investment in new projects and the construction period of the prefabrication yard.

The utility model relates to a multi-ship mooring arrangement structure. A first broadside of a transfer barge is connected with a broadside of an ocean bulk cargo ship in a mooring mode, and a second broadside of the transfer barge is connected with a cargo barge in a mooring mode. A first tail cable and a first tail winch device are arranged at the tail of the transfer barge, a first transverse cable and a first midship winch device are arranged in the middle of the first broadside, and a first bow cable and a first bow winch device are arranged at the bow of the first broadside; a second tail cable and a corresponding second tail winch device are arranged at the tail part of a second broadside of the transfer barge, a second transverse cable and a corresponding second midship winch device are arranged in the middle of the second broadside, and a second bow cable and a corresponding second bow winch device are arranged at the bow part of the second broadside; the breaking forces of the first tail cable and the second tail cable, the first transverse cable and the second transverse cable, and the first bow cable and the second bow cable are different in design; the first tail winch device and the second tail winch device, the first midship winch device and the second midship winch device, and the first bow winch device and the second bow winch device are different in quality design.

The present invention relates to a system and method for uncovering and removing pipeline from the seafloor using a subsea trenching system using pressurized water to uncover pipe, a subsea shear carried by a barge to cut lengths of the pipeline, and a grapple carried by a barge to lift cut lengths of pipeline for placement on a pipe haul and recovery barge.