JP5982340B2 - Cargo handling method between cargo ship and land side equipment, cargo handling system, marine hose extension ship - Google Patents

Description

  The present invention relates to a cargo handling method between a cargo ship and a land-side facility, a cargo handling system, and a marine hose, which are used when handling fluid cargo such as crude oil and natural gas between a storage tank and a cargo ship. It is related to the extension ship.

  Tanker ships, natural liquefied gas carriers (LNG ships), and the like are used for transporting fluid cargo such as crude oil and natural gas. These cargo ships have been increased in size in consideration of transportation efficiency, and fluid cargo can be lifted and loaded from a cargo tank to a storage tank installed on land or offshore, or fluid cargo can be loaded from a storage tank to a cargo ship. ing.

  When using these large cargo ships such as Very Large Crude Carriers (VLCCs), such as very large tankers (VLCC), in places where cargo handling equipment connected to the storage tank is installed. Because it is difficult to carry cargo by directly berthing the cargo ship, and for safety reasons, do not berth to the general quay and berth at the sea berth, which is a cargo handling terminal on the ocean. The cargo-side ship-side cargo handling pipe is connected to the connection port of the land-side cargo-handling pipe formed by the sea-floor pipeline laid on the sea floor and connecting the sea berth and the storage tank, By using the land-side cargo handling piping and the ship-side cargo handling piping, the cargo handling equipment of the cargo ship is used for lifting and cargo handling (see, for example, Patent Document 1).

  As an example of this sea berth, it is a floating oil handling facility that is connected to a subsea oil field via a riser pipe and that can be used to ship oil by mooring a tanker. There has been proposed a circular floating oil handling facility that is provided so as to be able to turn horizontally around a center line (see, for example, Patent Document 2).

  In other words, in the prior art, when performing unloading and loading operations for transferring fluids such as liquids and gases between an onshore or offshore storage tank and a cargo ship, the land equipment side provided in advance is used. A cargo ship moves to a place where there is a land side cargo handling pipe, for example, to sea berth, and the ship side cargo handling pipe is connected to a connection port of the land side cargo handling pipe of the cargo handling facility.

  However, in the conventional technology, a cargo ship such as a large tanker moves to a place where the land-side cargo handling piping on the side of the land equipment such as sea berth is provided, and during the cargo handling, the cargo ship moves to a mooring facility attached to the land-side equipment. Since it is assumed that the ship is moored or anchored at its anchor (anchor), a deep-draft cargo ship such as an ultra-large tanker is limited by the water depth of its water area. The situation that cannot move to a certain place has come to occur.

  In stormy weather, a cargo ship moored or anchored may collide with the cargo handling equipment of the land-side equipment, or it may be a relay cargo handling that connects the ship-side cargo handling piping and the land-side cargo handling piping. There is a risk that the piping will be bent severely or a large tension will be applied, causing damage to the relay cargo handling piping. There may also be situations where the ship must be moved to a safe area.

In order to solve these problems, the present inventors have escaped from the technical idea of “the cargo ship moves to a place where the land-side cargo handling piping of the land-side equipment is located” and performs “safety”. A marine hose that can be connected to or connected to the land-side cargo handling piping of the land-side equipment by the marine hose extension ship is extended from the land-side cargo handling piping of the land-side equipment to the cargo ship that is staying in the area. I thought about the technical idea that the cargo can be safely handled by using as a cargo handling piping for relay connecting the cargo handling piping on the ship side and the cargo handling piping on the land side.

  In other words, “Create a quiet area by building a breakwater, or create a permanent mooring facility or area for mooring a cargo ship by using the quiet area that is generated topographically. Changing the conventional idea of mooring in mooring facilities or anchoring in the mooring area, and anchoring the cargo ship to the cargo handling facility, "to cargo ships that are anchored or stopped at any place, The cargo handling piping for relay is extended from the land side cargo handling piping of the land side equipment by a marine hose extension ship, and this cargo handling piping for relay is connected to the cargo handling equipment on the cargo ship side and relayed with a cargo ship that is shaken by wind waves I thought about changing the direction to the idea that "unloading and unloading pipes for unloading are integrated to enable safe cargo handling."

  As an example of a cargo handling method using a marine hose that moves fluid on the ocean, for example, a hose body and a float that provides buoyancy to the hose body arranged at predetermined intervals in the longitudinal direction of the hose body, Ships loaded with cargo are moored at sea or on land using a ship handling hose for loading cargo from other tanks to an onshore tank, and in this state, at least from the ship to the land is installed with a ship handling hose. After that, a cargo handling method for cargo handling using an engine of a ship has been proposed (for example, see Patent Document 3).

  In addition, there is no ship that can develop marine hoses, such as the marine hose extension ship considered by the present inventors, but there is a submarine cable laid ship as a reference ship for this marine hose extension ship. As an example of a cable laying ship, for example, in order to reduce the construction period and cost of the submarine cable landing work, two or more cable tanks for accommodating the submarine cables and a submarine cable drawn from the cable tank are provided in a predetermined manner. A first cable guide to be assembled at a position, a lashing device for winding a restraining wire around the submarine cable assembled by the first cable guide, and the submarine cable integrated by the lashing device to a predetermined The cable engine that pulls out at speed and the sea that is pulled out from the cable engine Cable layer which has a stun chute to drop into the sea from the bow or stern to induce cable has been proposed (e.g., see Patent Document 4).

  Further, as an apparatus for stopping a cargo ship at an arbitrary place, for example, a method and an apparatus for holding a dynamic position of a ship by being coupled to a cargo ship as shown in FIGS. , See Patent Document 5).

JP 2008-56293 A JP-A-9-193888 JP 2001-278400 A JP-A-8-168149 US Patent No. 8,028,638

The present invention has been made in view of the above-described situation, and its purpose is between a cargo ship staying in a safe area and a storage tank on land or sea even under severe weather and sea conditions. To provide a cargo handling method between a cargo ship and a land-side facility and a cargo handling system capable of safely and efficiently unloading and loading fluid cargo such as crude oil and natural gas. is there.

In order to achieve the above object, the cargo handling method between the cargo ship of the present invention and the land-side equipment is the cargo ship that performs cargo handling between the cargo ship and the land-side equipment of the onshore or offshore storage tank. In a cargo handling method between facilities, a marine hose extension ship equipped with a reel on which a marine hose can be wound and equipped with a winding device for accommodating a part or the whole of the marine hose, A pipe transport step for transporting the other end of the marine hose connected to or connected to the land-side cargo handling piping on the land-side equipment side to the cargo ship while the marine hose is extended from the reel; Using the pipe connection step for connecting the marine hose directly or indirectly to the ship side cargo handling pipe of the cargo ship, the marine hose, and the ship side cargo handling pipe connected to the marine hose, A loading / unloading step for performing unloading or unloading, a piping separation step for separating the marine hose from the ship-side loading piping after the end of loading or unloading, and moving toward the land-side equipment, It includes a pipe accommodation step of accommodating a part or all of the marine hose separated in the pipe separation step in the accommodation part of the marine hose extension ship, or accommodating in the land side accommodation part of the land side facility. Is the method.

  In addition, this land-side equipment means land-side cargo handling equipment such as sea berths in places where cargo handling equipment such as sea berths and port facilities are substantial. When there is no facility, it means a storage tank on the land side.

  According to this method, a marine hose that can be connected to or connected to land-side cargo handling piping on the land-side equipment side by a marine hose extension ship is connected to the land-side by a marine hose extension ship. Since this marine hose is expanded from the equipment side and used as a relay cargo handling pipe connecting the ship side cargo handling pipe and the land side cargo handling pipe, the cargo ship remains in the deep water area, and Cargo handling can be performed in a state where the cargo ship is far away from the land-side equipment.

  For this reason, it is possible to prevent the cargo ship from colliding with the cargo handling equipment on the land side equipment side, or damage to the relay cargo handling pipe between the ship side cargo handling pipe and the land side cargo handling pipe. Even in stormy weather, it is necessary to safely and efficiently lift and load fluid cargoes such as crude oil and natural gas between cargo ships staying in safe areas and storage tanks on land or sea. Can do.

Alternatively, the cargo handling method between the cargo ship of the present invention and the land-side equipment for achieving the above object includes a cargo ship performing cargo handling between the cargo ship and the land-side equipment of an onshore or offshore storage tank, and In the cargo handling method between land side facilities, a piping conveyance step for conveying the other end side of the marine hose that is connected to or connectable to the land side cargo handling piping on the land side equipment side to the cargo ship; A cargo connection step for directly or indirectly connecting the conveyed marine hose to a ship side cargo handling pipe of the cargo ship, the marine hose, and the ship side cargo handling pipe connected to the marine hose. Or, a cargo handling execution step for performing unloading cargo handling, a pipe separation step for separating the marine hose from the ship side cargo handling piping after completion of cargo handling or after suspension of cargo handling, and moving toward the land side equipment, A part of the marine hose separated in the pipe separation step is accommodated in an accommodation part of the marine hose extension ship, or a pipe accommodation step of accommodating in a land side accommodation part of a land side facility, and the cargo A device mounting step of mounting an external fixed point holding device for giving a fixed point holding function to the ship to the cargo ship, and in the piping connection step, the transported marine hose is connected to the device side piping of the external fixed point holding device. It connects to the said ship side cargo handling piping via.
According to this method, since the apparatus includes a device mounting step of mounting an external fixed point holding device for giving a fixed point holding function to the cargo ship, the cargo ship can be safely held in a preset region even under stormy weather. As a result, cargo handling can be carried out more safely, and the preset area can be made smaller, and the navigation restriction area for other cargo ships and fishing boats that do not carry out cargo handling using this land side equipment can be set. It can be narrowed.
In the piping connection step, the transported marine hose is connected to the ship side cargo handling piping through the equipment side piping of the external fixed point holding device, so the equipment side piping and the other end of the marine hose mounted on the marine hose extension ship Since the joint part with the side can be configured separately from the joint part of the cargo handling ship side of the cargo ship so that it can be more easily coupled and separated, the joint between the equipment side pipe and the other end of the marine hose can be joined. Can be performed more easily.
In this case, the other end of the apparatus side piping opposite to the marine hose is joined to the ship side cargo handling piping. This joining operation can be easily performed because the external fixed point holding device is temporarily attached to the cargo ship and integrated with the cargo ship.
In the above cargo handling method between the cargo ship and the land-side facility, the marine hose extension ship action range is preset if the cargo ship is held within the preset offshore setting area during cargo handling. It is possible to optimize the length, weight, take-up device, etc. of the marine hose to be installed, and it is not necessary to provide unnecessary facilities on the marine hose extension ship.

  In the cargo handling method between the cargo ship and the land-side facility, the land-side cargo handling provided in an offshore sea berth connected to the storage tank side by a pipeline in the piping conveyance step. For marine hoses that are connected to or connectable to piping, when a sea berth is provided, it is usually difficult to berth directly on the land due to water depth, etc. This cargo ship is often shallow, so if you want to increase the size of the cargo ship used for transportation, or if you are one or two kilometers away from the sea berth but there is a place where the wind wave is calmer than sea berth, etc. The cargo handling method between the shore and the land side equipment is particularly effective.

Handling system between cargo ships and land-side equipment for achieving the above object, performs the handling between the cargo ship and land or offshore storage tank, between the cargo ship and land-side facilities In the cargo handling system, it is provided with a reel around which the marine hose can be wound and is equipped with a winding device for accommodating a part or the whole of the marine hose, while self-navigating, while the marine hose is extended from the reel, A marine hose extension ship that transports the other end of the marine hose connected to or connectable to the land side cargo handling piping on the land side equipment side to the cargo ship, and the cargo by the marine hose extension ship The marine hose is transported to a ship and connected directly or indirectly to the ship-side cargo handling piping of the cargo ship.

  According to this configuration, the marine hose can be connected to or connected to the land-side cargo handling equipment side by the marine hose extension ship with respect to the cargo ship staying in the safe area by the marine hose extension ship. The marine hose can be used as a relay cargo handling pipe connecting the ship side cargo handling pipe and the land side cargo handling pipe, so that the cargo ship can stay in a deep water area. In addition, cargo handling can be performed with the cargo ship being far away from the land-side cargo handling facility.

Alternatively, the cargo handling system between the cargo ship and the land-side equipment to achieve the above-mentioned purpose is a cargo handling system between the cargo ship and the land-side equipment that performs the cargo handling between the cargo ship and the onshore or offshore storage tank. In the cargo handling system, the ship is self-navigating with a reel on which a marine hose can be wound, and one end is connected to or connected to the land-side cargo handling pipe on the land-side equipment side while the marine hose is extended from the reel. A marine hose extension ship that conveys the other end of the marine hose to the cargo ship, and the marine hose extension ship, to which the marine hose extension ship is transferred to the cargo ship, and is directly or indirectly connected to the ship side cargo handling piping of the cargo ship. The marine hose, and can be attached to the cargo ship, and by this attachment, an external fixed point holding device for giving a fixed point holding function to the cargo ship, and the other end of the marine hose and the Configured to provide a apparatus-side pipe for relaying between the side cargo piping to the external fixed point maintenance device.
According to this configuration, it can be mounted on a cargo ship, and is configured with an external fixed point holding device that gives a fixed point holding function to the cargo ship. It is possible to safely hold the position, so that the cargo can be handled more safely and the preset area can be made smaller, and other cargo ships and fishing boats that do not perform cargo handling using this land side equipment It is possible to narrow the navigation restriction area.
Further, in the cargo handling system between the cargo ship and the land-side equipment described above, the external fixed point holding device includes a device-side pipe that relays between the other end of the marine hose and the ship-side cargo handling pipe. Then, the joint part between the equipment side piping and the other end of the marine hose mounted on the marine hose extension ship is configured separately from the joint part of the cargo handling ship side cargo handling pipe, making it easier to connect and separate Therefore, the apparatus side piping and the other end of the marine hose can be joined more easily.

  Further, in the cargo handling system between the cargo ship and the land side equipment, the land side cargo handling pipe connected to the land side equipment side through a pipeline is connectable to the land side of the marine hose. If it is configured with a sea berth having a section, the marine hose extension ship can be extended from this sea berth and the travel distance can be shortened, so the range of activities of the marine hose extension ship can be expanded. it can. Moreover, even when an existing sea berth is provided, the cargo ship used for transportation can be made larger.

Further, the marine hose extension ship of the present invention for achieving the above object includes a reel on which the marine hose can be wound and a winding device for accommodating a part or the whole of the marine hose. Self-propelled, one end is connected to the land-side cargo handling piping on the land-side equipment side of a storage tank on land or offshore, or the other end of the marine hose is used as a cargo ship while the marine hose is extended. Configured to transport.

  According to this configuration, the cargo handling method between the cargo ship and the land-side facility can be performed more quickly and efficiently.

  According to the cargo handling method between the cargo ship and the land-side facility of the present invention, the cargo handling system, and the marine hose extension ship, the marine hose extension ship can A marine hose that can be connected to or connected to the land-side cargo handling piping on the land-side equipment side by the hose extension ship is extended from the land-side equipment side, and this marine hose is connected between the ship-side cargo handling piping and the land-side cargo handling piping. Since cargo handling is performed using cargo handling piping, cargo handling can be performed while the cargo ship stays in a deep water area and the cargo ship is far away from the land-side equipment.

  Therefore, it is possible to prevent the cargo ship from colliding with the cargo handling equipment of the land side equipment and damage to the cargo handling pipe for relay between the ship side cargo handling pipe and the land side cargo handling pipe. Even under stormy weather, fluid cargo such as crude oil and natural gas can be lifted and loaded safely and efficiently between cargo ships staying in safe areas and storage tanks on land or sea. it can.

  As a result, it is possible to use a calm water area even under stormy weather, so it is not necessary to construct a new port facility for offshore civil engineering work for a large cargo ship, and a cargo handling line can be constructed safely. In addition, cargo handling is possible even in stormy weather, so even during periods of heavy weather such as in winter, the period during which cargo can be handled can be further expanded, and the cargo handling time can be shortened, increasing the number of cargo handling operations and storage. The ability to pay out tanks (production) can be strengthened.

It is the figure which showed typically the structure of the cargo handling system between the cargo ship and the land side equipment in 1st Embodiment which concerns on this invention, and is a figure which shows the state which has a marine hose extension ship in the land side . In the cargo handling system between the cargo ship of FIG. 1 and the land side equipment, it is a figure which shows the state by which the marine hose extension ship arrives at the cargo ship and the marine hose which is a floating hose, and the ship side cargo handling piping are connected. In the cargo handling system between the cargo ship and the land side equipment of FIG. 1, it is a figure which shows the state by which the marine hose extension ship arrives at the cargo ship and the marine hose which is a submarine hose, and the ship side cargo handling piping are connected. The figure which showed typically the structure of the cargo handling system between the cargo ship and the land side equipment in 2nd Embodiment which concerns on this invention, a marine hose expansion ship is on the land side, and an external fixed point holding | maintenance apparatus is It is a figure which shows the state which exists in the middle of the land side and the ship side. In the cargo handling system between the cargo ship and the land side equipment of FIG. 4, the state where the marine hose extension ship is in the middle of the land side and the ship side and the external fixed point holding device reaches the cargo ship and is installed. It is. FIG. 5 is a diagram showing a state where the marine hose extension ship reaches the cargo ship and the marine hose that is a submarine hose and the ship side cargo handling piping are connected in the cargo handling system between the cargo ship and the land side equipment of FIG. 4. It is the figure which showed typically the structure of the cargo handling system between the cargo ship and land side equipment in 3rd Embodiment which concerns on this invention. It is the figure which showed typically the structure of the cargo handling system between the cargo ship and the land side installation in 4th Embodiment which concerns on this invention. It is a figure which shows an example of arrangement | positioning of the area | region, sea berth, and storage tank which were preset. It is a perspective view which shows typically the structure of the external fixed point holding | maintenance apparatus of a prior art. It is a figure which shows the state just before mounting | wearing of the external fixed point holding | maintenance apparatus of a prior art. It is a figure which shows the state after mounting | wearing with the external fixed point holding | maintenance apparatus of a prior art. It is a figure which shows the state after mounting | wearing with the external fixed point holding | maintenance apparatus of a prior art from another direction.

  Hereinafter, a cargo handling method between a cargo ship and a land-side facility, a cargo handling system, and a marine hose extension ship according to an embodiment of the present invention will be described with reference to the drawings. These drawings schematically show the structure of the cargo handling system and do not necessarily show the actual structure.

  First, a cargo handling system (hereinafter referred to as a cargo handling system) between a cargo ship and land-side equipment according to a first embodiment of the present invention will be described with reference to FIGS.

  The cargo handling system 1A of the first embodiment is a cargo handling system that performs cargo handling between a cargo ship 20 and an onshore or offshore storage tank 10, and a land side cargo handling pipe on the land side equipment 11 side of the storage tank 10. A marine hose extension ship 30 that conveys a marine hose 41 having one end connected to 11a to the cargo ship 10 and a marine hose that is conveyed to the cargo ship 20 and connected directly or indirectly to the ship-side cargo handling piping 30 of the cargo ship 20. 41.

  This marine hose extension ship 30 is provided with a hose reel (accommodating portion) 31 on which a marine hose 41 can be wound and is self-propelled, and is connected to a land-side cargo handling pipe 11a on the land-side equipment 11 side of a storage tank 10 on land or offshore. The other end of the marine hose 41 is transported to the cargo ship 20 while the marine hose 41 having one end connected or connectable is stretched.

  When the marine hose extension ship 30 moves, the marine hose 41 does not necessarily have to be connected to the land-side cargo handling pipe 11a on the land-side equipment 11 side of the storage tank 10 at one end. It only has to be connected. That is, the marine hose 41 may be connected to one end side of the land-side cargo handling pipe 11a.

  When a floating hose 41a as shown in FIG. 2 is employed, a fixed anchor is laid out every few hundreds of meters (for example, every 200 m), and the flow stop 42 by the fixed anchor is installed and expanded. On the other hand, when the submarine hose 14b as shown in FIG. 3 is employed, the floating hose portion 41A, the submarine hose portion 41B, and the floating hose portion 41A are connected. The total length of the marine hose 41 (= 41a, 41b) is usually about 1000 m to 2000 m.

  A cargo handling method (hereinafter referred to as a cargo handling method) between the cargo ship and the land-side equipment implemented by the cargo handling system 1A having this configuration includes a pipe conveyance step, a pipe connection step, a cargo handling execution step, and pipe separation. It is comprised including a step and a piping accommodation step.

  In this cargo handling method, the cargo ship 20 enters the preset area Ra as shown in FIG. 9 and feeds the anchor chain 22 connecting the anchors 21 from the cargo ship 20 so as to stay in the area Ra. Stay anchored with 21 and anchor chain 22. Along with this anchorage, one end side is connected to the land-side cargo handling pipe 11a on the land-side facility 11 side of the storage tank 10 while the marine hose 41 is being extended by the marine hose extension ship 30 equipped with the marine hose 41 in the pipe conveyance step. The other end of the marine hose 41 that is open or connectable is moved to the cargo ship 20. After this movement, the other end side of the moved marine hose 41 is directly or indirectly connected to the ship-side cargo handling pipe 23 of the cargo ship 20 in a pipe connection step.

  Next, when one end side of the marine hose 41 is not connected to the land side cargo handling piping 11a on the land side equipment 11 side, the marine hose 41 is connected to the marine hose 41 and the marine hose 41 in the cargo handling execution step. Using the ship-side cargo handling piping 23, cargo handling or lifting cargo handling is performed.

  After this cargo handling is completed, or after cargo handling is interrupted due to stormy weather, etc., the marine hose 41 is separated from the ship-side cargo handling piping 23 in the piping separation step, and further, the piping is moved while moving toward the land-side equipment 11 in the piping accommodation step. A part or all of the marine hose 41 separated in the separation step is mounted on the marine hose extension ship 30. The marine hose extension ship 30 moves the marine hose 41 to the land side equipment 11 side while winding up the marine hose 41 on the hose reel 31 that is a housing part, and the one end side of the marine hose 41 is land side cargo handling piping 11a on the land side equipment 11 side. The marine hose 41 is partly or entirely accommodated in the marine hose extension ship 30. Further, part or all of the marine hose 41 may be accommodated in a land-side accommodation portion such as a hose reel (not shown) provided in the land-side equipment 11. Then call at the nearest base port.

  According to the cargo handling system 1A and the cargo handling method of the first embodiment, the marine hose extension ship 30 allows the marine hose extension ship 30 to connect the land-side equipment 11 to the cargo ship 20 staying in the safety area Ra. A marine hose 41 that can be connected to or connected to the land-side cargo handling piping 11a is extended from the land-side equipment 11 side, and this marine hose 41 is connected to the ship-side cargo handling piping 23 and the land-side cargo handling piping 11a. Since cargo handling can be performed using cargo handling piping, cargo handling is performed with the cargo ship 20 staying in the deep region Ra and the cargo ship 20 being far away from the land-side equipment 11. be able to.

  Therefore, it is possible to prevent the cargo ship 20 from colliding with the cargo handling equipment of the land side equipment 11 and damage to the relay cargo handling pipe between the ship side cargo handling pipe 23 and the land side cargo handling pipe 11a. Even under stormy weather and sea conditions, fluid cargo such as crude oil and natural gas can be safely and efficiently transported between the cargo ship 20 staying in the safe area Ra and the land-side equipment 11 of the storage tank 10 on land or sea. In addition, it is possible to carry out unloading or loading.

  The cargo handling system 1A and the cargo handling method of the first embodiment are preferably used in a relatively shallow water area where the position of the cargo ship 20 can be maintained by anchorage. However, the wave limit due to anchorage is lower than the cargo handling system 1B and cargo handling method of the second embodiment using the external fixed point holding device 70 described below.

  Next, a cargo handling system according to a second embodiment of the present invention will be described with reference to FIGS. The cargo handling system 1B of the second embodiment can be mounted on the cargo ship 20, and is configured to include an external fixed point holding device 70 that gives the cargo ship 20 a fixed point holding function. The external fixed point holding device 70 is docked on a cargo ship 20 such as a VLCC in a sea area having a water depth of 40 to 50 m or more, and the cargo ship 20 set in advance in the region Ra by the navigation and position holding machine of the external fixed point holding device 70. Move and hold the position.

  The external fixed point holding device 70 is preferably configured by providing the marine hose 41 with a device-side piping 71 that relays between the other end and the ship-side cargo handling piping 23. With this configuration, the device-side piping 71 The joint part with the other end side of the marine hose 41 mounted on the marine hose extension ship 30 may be configured separately from the joint part of the ship-side cargo handling pipe 23 of the cargo ship 20 so as to be more easily coupled and separated. Since it can do, joining of apparatus side piping 71 and the other end side of marine hose 41 can be performed more easily.

  As the external fixed point holding device 70, a device as shown in FIGS. 10 to 13 which has already been put into practical use and can be used can be used, for example, as described in US Pat. No. 8,028,638. As shown in FIG. 10, the external fixed point holding device 70 has an L-shape and includes a bridge 70a, a contact member 70b, and a thruster 70c. In addition to being able to float and sink, self-navigation and fixed-point holding are possible by operating the thruster 70c, and these operations can be performed on the bridge 70a.

  The external fixed point holding device 70 has a height of 42 m, a draft of 17.0 m, and a light cargo weight of about 4200 tons, and is usually placed at the nearest port or sea berth 70. Is done. In addition, when using it in another place, the external fixed point holding | maintenance apparatus with a short self-cruising distance is towed by the marine hose expansion ship 30, and moves.

  As shown in FIG. 11, the external fixed point holding device 70 approaches the one side of the cargo ship 20 in a slightly sunk state, and inserts an L-shaped lower projecting portion below the ship bottom. As shown in FIGS. 12 and 13, the thruster 70c is used to place the contact member 70b in contact with the side of the cargo ship 20 and the bottom of the ship while viewing the relative position with the cargo ship 20 on the bridge 70a. While moving the fixed point holding device 70, it floats a little. The external fixed point holding device 70 is attached to the cargo ship 20 by this floating. After the external fixed point holding device 70 is mounted on the cargo ship 20, the cargo ship 20 integrated with the external fixed point holding device 70 is held at a fixed point by the fixed point holding control of the external fixed point holding device 70 by the thruster 70c. Can do.

  Further, when the external fixed point holding device 70 is separated from the cargo ship 20, the external fixed point holding device 70 is sunk from the state shown in FIGS. Move to a state as shown in FIG.

  The cargo handling method in the cargo handling system 1B having this configuration is a method of carrying cargo while holding the cargo ship 20 within a preset range Ra of the ocean during cargo handling. The marine hose 41 can be set in advance, the length, weight, take-up device and the like of the marine hose 41 can be optimized.

  Since the normal cargo ship 20 does not have a fixed point holding (dynamic positioning system: DPS) function, by attaching the external fixed point holding device 70 to the cargo ship 20, the cargo ship 20 holds the fixed point. Add functionality.

  That is, before the pipe transfer step or in parallel with the pipe transfer step, the cargo ship 20 is immediately outside the range of the preset offshore setting area Ra as shown in FIG. The fixed point holding device 70 is self-propelled to encounter the cargo ship 20. Thereafter, the external fixed point holding device 70 is mounted on the cargo ship 20 in the device mounting step. Thereafter, it is the same as the cargo handling method of the first embodiment in the cargo handling system 1A of the first embodiment, but after the pipe accommodation step of the cargo handling method of the first embodiment or the pipe accommodation step. At the same time, the external fixed point holding device 70 is separated from the cargo ship 20 in the device separation step.

  Therefore, in the cargo handling method of the second embodiment, compared to the cargo handling method of the first embodiment, there is an apparatus mounting step before or in parallel with the piping conveyance step, and The difference is that there is an apparatus separation step after the pipe accommodation step or in parallel with the pipe accommodation step. The other points are the same as the cargo handling method of the first embodiment.

  In the cargo handling system 1B and the cargo handling method according to the second embodiment, the cargo ship 20 can be safely held in the preset area Ra even under stormy weather. The area Ra can be made a small area, and the navigation restriction area of other cargo ships and fishing boats that do not perform cargo handling using the land-side cargo handling equipment 11 can be narrowed.

  In addition, during cargo handling, the cargo ship 20 can be held in a preset range of the offshore setting area Ra, so that the action range of the marine hose extension ship 30 can be set in advance, and the length of the marine hose 41 to be mounted, The weight, the take-up device, etc. can be optimized, so that it is not necessary to provide useless facilities in the marine hose extension ship 30.

  In particular, in a relatively shallow water area, the position of the cargo ship 20 can be maintained by anchoring. Therefore, the cargo handling system 1A and the cargo handling method according to the first embodiment for cargo handling without using the external fixed point holding device 70 are provided. Although advantageous, the wave limit due to anchoring is higher in the cargo handling system 1A and cargo handling method of the first embodiment using the external fixed point holding device 70. In addition, in a relatively deep water area, it becomes difficult to hold the position of the cargo ship 20 due to anchoring. Therefore, the cargo handling system 1B and the cargo handling method of the second embodiment in which cargo handling is performed using the external fixed point holding device 70 are advantageous. Become.

  Next, a cargo handling system (hereinafter referred to as a cargo handling system) between a cargo ship and a land-side facility according to a third embodiment of the present invention will be described with reference to FIG. In the configuration of the cargo handling system 1C of the third embodiment, in addition to the configuration of the cargo handling system 1A of the first embodiment, the land side of the marine hose 41 can be connected and the land side of the storage tank 10 can be connected. A sea berth 60 having a connecting portion 11b of a land-side cargo handling piping 11a connected to the facility 11 by a submarine pipeline (or a floating pipeline) 61 is provided.

  The submarine pipeline 61 is usually laid on the seabed in a state where a bare pipe is used or a concrete is wound around the outer periphery. As this laying method, for example, there are a method in which a submarine pipe is directly buried, a method in which a submarine pipe is installed on the bottom of the sea, and a concrete block having a U-shaped cross section is installed thereon as a weight.

  Further, a cargo handling system (hereinafter referred to as a cargo handling system) between the cargo ship and the land-side facility according to the fourth embodiment of the present invention will be described with reference to FIG. In the configuration of the cargo handling system 1D of the fourth embodiment, in addition to the configuration of the cargo handling system 1B of the second embodiment, the land side of the marine hose 41 can be connected and the land side of the storage tank 10 can be connected. A sea berth 60 having a connecting portion 11b of a land-side cargo handling piping 11a connected to the facility 11 by a submarine pipeline (or a floating pipeline) 61 is provided.

  In the configuration of the cargo handling systems 1C and 1D of the third and fourth embodiments, the marine hose stretcher 30 can be extended from the sea berth 60, and the travel distance can be shortened. The range of activities of the marine hose extension ship 30 can be expanded. Moreover, even when the existing sea berth 60 is provided, the cargo ship used for transportation can be made larger.

  The cargo handling method between the cargo ship and the land-side facility of the present invention, the cargo handling system, and the marine hose extension ship are the marine hose extension ship and the marine hose extension ship with respect to the cargo ship staying in the safe area. A marine hose that can be connected to or connected to the land-side cargo handling piping on the land-side equipment by the ship is extended from the land-side equipment side, and this marine hose is connected between the ship-side cargo handling piping and the land-side cargo handling piping. Since piping is used for cargo handling, cargo can be handled while the cargo ship stays in a deep water area, and the cargo ship is far away from the land-side equipment. It can be used for cargo handling between a cargo ship that handles fluid cargo capable of transporting gas pipes such as gas and natural gas, and land-side equipment.

DESCRIPTION OF SYMBOLS 10 Storage tank 11 Land side equipment 11a Land side cargo handling piping 11b Land side cargo handling piping connection part (entrance / exit)
20 Cargo ship 21 anchor
22 Anchor chain
23 Ship-side cargo handling piping 30 Marine hose extension ship 31 Reel 41 Marine hose 41a Floating hose (marine hose)
41b Submarine hose (marine hose)
42 Flow Stop 50 Land 51 Water Bottom 52 Water Surface 60 Seaverse 61 Subsea Pipeline 70 External Fixed Point Holding Device 71 Equipment Side Piping

Claims (8)

In a cargo handling method between a cargo ship and a land-side facility that performs cargo handling between the cargo ship and the land-side equipment of an onshore or offshore storage tank,
While a marine hose is provided with a reel on which a marine hose can be wound and a take-up device for accommodating a part or the whole of the marine hose is mounted, the marine hose is extended from the reel by a marine hose extension ship. A pipe transport step for transporting the other end of the marine hose that is connected to or connectable to the land-side cargo handling piping on the land-side equipment side to the cargo ship;
A pipe connection step for directly or indirectly connecting the conveyed marine hose to a ship-side cargo handling pipe of the cargo ship;
Using the marine hose and the ship-side cargo handling pipe connected to the marine hose, a cargo handling execution step for performing cargo handling or lifting cargo handling,
A pipe separating step for separating the marine hose from the ship-side cargo handling pipe after the end of the handling or after the suspension of the handling;
While moving toward the land side equipment, a part or all of the marine hose separated in the pipe separation step is accommodated in the accommodation part of the marine hose extension ship, or in the land side accommodation part of the land side equipment. A cargo handling method between a cargo ship and a land-side facility, comprising a piping accommodation step for accommodating. In a cargo handling method between a cargo ship and a land-side facility that performs cargo handling between the cargo ship and the land-side equipment of an onshore or offshore storage tank,
A pipe transport step for transporting the other end of the marine hose, which is connected to or connectable to the land-side cargo handling piping on the land-side equipment side, to the cargo ship;
A pipe connection step for directly or indirectly connecting the conveyed marine hose to a ship-side cargo handling pipe of the cargo ship;
Using the marine hose and the ship-side cargo handling pipe connected to the marine hose, a cargo handling execution step for performing cargo handling or lifting cargo handling,
A pipe separating step for separating the marine hose from the ship-side cargo handling pipe after the end of the handling or after the suspension of the handling;
While moving toward the land side equipment, a part or all of the marine hose separated in the pipe separation step is accommodated in the accommodation part of the marine hose extension ship, or in the land side accommodation part of the land side equipment. Including a piping housing step for housing;
A device mounting step of mounting an external fixed point holding device for giving a fixed point holding function to the cargo ship to the cargo ship;
In the piping connection step, the cargo handling method between the cargo ship and the land-side equipment is characterized in that the conveyed marine hose is connected to the ship-side cargo handling piping via the equipment-side piping of the external fixed point holding device. .   3. The cargo handling method between a cargo ship and a land-side facility according to claim 1 or 2, wherein the cargo ship is held in a range of a preset offshore setting area during cargo handling.   In the piping conveyance step, the marine hose is a marine hose that is connected to or connectable to the land-side cargo handling piping provided in an offshore sea berth connected to the storage tank side by a pipeline. The cargo handling method between the cargo ship and the land-side facility according to any one of claims 1 to 3. A cargo handling system between a cargo ship and a land-side facility that performs cargo handling between a cargo ship and an onshore or offshore storage tank, and includes a reel on which a marine hose can be wound, and a part or all of the marine hose. The marine is equipped with a take-up device for housing the vehicle, and is self-propelled, and one end of the marine hose is connected to or connectable to the land-side cargo handling piping on the land-side equipment side while the marine hose is extended from the reel. A marine hose extension ship that conveys the other end of the hose to the cargo ship, and the marine hose that is conveyed to the cargo ship by the marine hose extension ship and connected directly or indirectly to a ship-side cargo handling piping of the cargo ship. handling system between cargo ship and land-side equipment, characterized in that it comprises and. In a cargo handling system between a cargo ship and a land-side facility that performs cargo handling between a cargo ship and an onshore or offshore storage tank, the ship is self-navigating with a reel on which a marine hose can be wound. A marine hose extension ship that conveys the other end of the marine hose, which is connected or connectable to the land-side cargo handling piping on the land-side equipment side, to the cargo ship while being extended from the reel, and the marine With the marine hose transported to the cargo ship by a hose extension ship and connected directly or indirectly to the ship side cargo handling piping of the cargo ship,
Attached to the cargo ship, and equipped with an external fixed point holding device that gives the cargo ship a fixed point holding function.
A cargo handling system between a cargo ship and a land-side facility, characterized in that a device side pipe for relaying between the other end of the marine hose and the ship side cargo handling pipe is provided in the external fixed point holding device.   The sea berth which has a connection part of the land side cargo handling piping which can connect the land side of the marine hose, and is connected with the land side equipment side with a pipeline is given. A cargo handling system between a cargo ship and land-side equipment. Land-side cargo handling on the land-side equipment side of an on-shore or offshore storage tank equipped with a reel capable of winding a marine hose and equipped with a winding device for accommodating a part or all of the marine hose A marine hose stretcher ship that conveys the other end side of the marine hose to a cargo ship while stretching the marine hose that is connected or connectable to one end of a pipe.

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