Mooring system

Abstract

The present invention comprises: a floating body floating on the sea surface; a mooring anchor seated on the seabed; a weight body positioned underwater between the floating body and the mooring anchor; and a plurality of mooring lines for mooring the floating body and having a closed curve shape. The mooring lines include: a first portion, in which a central lower part catches on a weight body mooring line catching part of the weight body; a second portion which passes through a weight body vertical passage in the weight body, and in which a central lower part catches on an anchor mooring line catching part of the mooring anchor; and a third portion which passes through a floating body vertical passage in the floating body and is connected to the first portion and the second portion, and in which a central upper portion catches on a floating body mooring line catching part provided on the floating body.

Description

mooring system

[0001] The present invention relates to a mooring system for mooring various types of floating bodies (or marine floating structures) floating on the sea surface, and more particularly, to a mooring system in which a floating body, a mooring anchor, and a weight are connected by a plurality of mooring lines in a closed curve shape.

[0002] Various types of floating structures are known, floating on the sea surface. Floating foundations for floating offshore wind power are a representative example.

[0003] Such a floating body can be moored by being connected to a mooring anchor fixed to the seabed by a mooring line.

[0004] There are various types of mooring anchors used, such as gravity anchors, drag-embedment anchors, and suction anchors.

[0005] As for mooring methods, taut mooring, semi-taut mooring, and TLP (tension leg platform mooring) are used.

[0006] The TLP mooring method is achieved by applying strong tensile force to vertical mooring lines called 'tendons', and has the advantage of being able to stably maintain floating marine structures even in rough sea conditions compared to the typical taut mooring or semi-taut mooring.

[0007] However, in order to maintain the tension in the TLP mooring method, the distance between the float and the mooring anchor must be kept constant, but there is a problem that it is difficult to maintain the tension when the position (height) of the float changes due to the difference in tides.

[0008] The biggest problem in mooring systems is how to connect mooring lines to mooring anchors.

[0009] As a technology related to this, Korean Patent No. 10-1572938, “Gravity mooring device for floating structure” (registered on November 24, 2015) has been proposed.

[0010] Conventional technology involves providing a metal ring on a gravity anchor, which is a concrete structure, and connecting a mooring line to the metal ring.

[0011] However, this method has limitations in the bonding strength between the metal ring and the concrete structure, so there is a risk that the metal ring may detach from the concrete structure if excessive tensile force is applied to the metal ring.

[0012] In addition, since mooring lines are usually made of metal materials such as wire rope or chain, the thickness of the mooring line must be selected taking into account corrosion that occurs when the mooring line is in contact with seawater for a long period of time.

[0013] If a mooring line is to be used only for a short period of time when corrosion does not occur, the mooring line is designed with tensile stress in mind and can be relatively thin. However, if a mooring line is to be used for a long period of time when corrosion does occur, the mooring line must be designed with corrosion in mind along with tensile stress and must be considerably thicker.

[0014] Furthermore, even when selecting a thick mooring line, it is necessary to replace it after a certain period of use. However, this requires the diver to disconnect the old mooring line from the deep-water mooring anchor and then reconnect a new mooring line to the anchor at a greater depth. Consequently, mooring line replacement is a relatively difficult task, making it difficult to perform on a frequent basis.

[0015] As mentioned above, because the replacement of mooring lines is difficult, mooring lines are replaced at relatively long intervals, and therefore, the mooring lines must be very thick to take into account corrosion that occurs during the long interval.

[0016] Since such very thick mooring lines do not bend easily, there is a problem in that it is not easy to connect the mooring lines to mooring anchors located in deep water.

[0017] The present invention has been devised to solve the problems of the prior art as described above, and proposes a mooring system in which a floating body, a mooring anchor, and a weight are connected by a plurality of mooring lines in a closed curve shape, so that the restoring force of the floating body can be increased by utilizing the weight of the weight, the tensile force applied to the mooring line can be maintained even when the water level changes due to the difference in tides, the shape of the mooring line can be changed even in the event of an external shock such as a typhoon, thereby minimizing local shock, and the mooring line can be easily replaced.

[0018] In addition, the present invention proposes a mooring system that can prevent tilting of a heavy object or floating object by using the tensile force applied to a mooring line.

[0019] In addition, the present invention proposes a mooring system in which a mooring line can be connected to a weight and a mooring anchor with a very large supporting force.

[0020] In order to solve the above problem, the present invention provides a mooring system comprising a float floating on the sea surface by buoyancy, a mooring anchor settled on the seabed, a weight positioned underwater between the float and the mooring anchor, and a plurality of mooring lines connecting the float and the weight to moor the float: the weight has a mooring line hooking portion for a weight to be hooked to a lower portion of the mooring line and a plurality of vertical passages for the weight to be vertically penetrated by the mooring line; the mooring anchor has a mooring line hooking portion for an anchor to be hooked to a lower portion of the mooring line; the float has a mooring line hooking portion for a float to be hooked to an upper portion of the mooring line and a plurality of vertical passages for the float to be vertically penetrated by the mooring line; each of the mooring lines has a closed curve shape; The above mooring line is characterized by including a first portion extending upward at both ends from a central lower portion that is hung on the mooring line hook for the weight body, a second portion extending upward at both ends from a central lower portion that is hung on the mooring line hook for the anchor and passing through a vertical passage for the weight body, and a third portion extending downward at both ends from a central upper portion that is hung on the mooring line hook for the floating body and passing through the vertical passage for the floating body, and being connected to the first portion and the second portion so that the mooring line forms a closed curve.

[0021] In the above, the sum of the distance (L1) between the float and the weight and the distance (L2) between the float and the mooring anchor is constant, and it is preferable that the distance (L2) between the float and the mooring anchor changes according to the water level.

[0022] In the above, it is preferable that the weight body includes a concrete body for the weight body and a vertical guide tube for the weight body made of stainless steel built into the concrete body for the weight body to form a vertical penetration passage for the weight body.

[0023] In another aspect of the present invention, there is provided a mooring system comprising a floating body floating on the sea surface by buoyancy, a mooring anchor settled on the seabed, a weight positioned underwater between the floating body and the mooring anchor, and a plurality of mooring lines connecting the mooring anchor and the floating body to the weight body for mooring the floating body: the weight body has a U-shaped weight passage formed therein for a lower portion of the mooring line to be hooked; the mooring anchor has a U-shaped anchor passage formed therein for a lower portion of the mooring line to be hooked; and each of the mooring lines has a closed curve shape; The above mooring line is characterized by including a first portion extending upward at both ends from a central lower portion that is hung on the U-shaped passage for the weight body, a second portion extending upward at both ends from a central lower portion that is hung on the U-shaped passage for the anchor, and a third portion that is connected to the first portion and the second portion so that the mooring line forms a closed curve while extending downward at both ends from a central upper portion that is hung on a mooring line hook portion for a floating body provided on the floating body.

[0024] In the above, the sum of the distance (L1) between the float and the weight and the distance (L2) between the float and the mooring anchor is constant, and it is preferable that the distance (L2) between the float and the mooring anchor changes according to the water level.

[0025] In the above: the weight body includes a concrete body for the weight body and a stainless steel U-shaped guide tube for the weight body embedded in the concrete body for the weight body to form a U-shaped passage for the weight body; the mooring anchor includes a concrete body for the anchor and a stainless steel U-shaped guide tube for the anchor body embedded in the concrete body for the anchor to form a U-shaped passage for the anchor; this is preferable.

[0026] In the above: the weight body is formed with a concrete body for the weight body and a plurality of vertical penetration passages for the weight body that vertically penetrate the concrete body for the spar; the floating body is formed with a plurality of vertical penetration passages for the floating body that vertically penetrate the floating body; the second part of the mooring line is arranged to pass through the vertical penetration passages for the weight body; and the third part of the mooring line is arranged to pass through the vertical penetration passages for the floating body; this is preferable.

[0027] As described above, the present invention can increase the restoring force of a floating body by lowering the center of gravity of the floating body using the weight of the weight body.

[0028] In addition, the present invention can maintain the tensile force applied to the mooring line as it is by changing the shape of the mooring line even when the water level changes due to the difference between high and low tides, and can minimize local shock by changing the shape of the mooring line even when there is an external shock such as a typhoon.

[0029] In addition, the present invention adopts a mooring line in the form of a closed curve, making it very easy to replace the mooring line.

[0030] In addition, the present invention can prevent a weight or a floating body from tilting by a mooring line that is tautly extended in a vertical direction and also restore the weight or the floating body to a horizontal state.

[0031] In addition, the present invention can dramatically increase the bonding strength between a mooring line and a weight and between a mooring line and a mooring anchor.

[0032] Figure 1 is a conceptual cross-sectional view of a mooring system according to a first embodiment of the present invention;

[0033] Figure 2 is a conceptual perspective view showing the structure of Figure 1;

[0034] Figure 3 is a conceptual perspective view showing the main structure of the weight body, mooring anchor, and floating body in Figure 2.

[0035] Figure 4 is a drawing showing the change in position of the floating body and mooring anchor according to the change in water level.

[0036] Figure 5 is a drawing expressing a state in which tilting of a weight and a floating body is prevented by a mooring line.

[0037] Fig. 6 is a conceptual cross-sectional view of a mooring system according to a second embodiment of the present invention.

[0038] Below, with reference to the attached drawings, embodiments of the present invention are described in detail so that those skilled in the art can easily implement them. However, the present invention may be implemented in various different forms and is not limited to the embodiments described herein. In the drawings, irrelevant parts have been omitted for clarity of description, and similar reference numerals have been assigned to similar parts throughout the specification.

[0039] Throughout the specification, whenever a part is said to "include" a component, this does not mean that it excludes other components, but rather that it may include other components, unless otherwise stated.

[0040] First, a first embodiment of the present invention will be described.

[0041] Figure 1 is a conceptual cross-sectional view of a mooring system according to a first embodiment of the present invention.

[0042] Figure 2 is a conceptual perspective view showing the structure of Figure 1, and for one of the four mooring lines, the state of passing through a weight and a mooring anchor is depicted as a hidden line.

[0043] Figure 3 is a conceptual perspective view showing the main structures of the weight body, mooring anchor, and floating body in Figure 2.

[0044] Figure 4 is a drawing showing changes in the positions of floating bodies and mooring anchors according to changes in water level.

[0045] Figure 5 is a drawing showing a state in which tilting of a weight and a floating body is prevented by a mooring line.

[0046] This mooring system is composed of a weight body (100), a mooring anchor (200), a floating body (300), and a mooring line (400).

[0047] A floating body (300, floating unit) floats on the sea surface due to buoyancy.

[0048] The floating body (300) can be made of metal, concrete, or a mixture of metal and concrete, and typically has a buoyancy chamber inside.

[0049] The floating body (300) is provided with a plurality of floating body mooring line hooks (311) and a plurality of floating body vertical penetration passages (312).

[0050] The mooring line hooking portion (311) for a floating body is a portion that guides the movement of the mooring line (400) while the upper portion of the mooring line (400) is hooked. In this embodiment, as an example of the mooring line hooking portion (311) for a floating body, a fairlead provided on the floating body (300) is presented.

[0051] However, the mooring line hook (311) for the floating body can be applied to anything as long as it can guide the movement of the mooring line (400) while the upper part of the mooring line (400) is hung.

[0052] A vertical penetration passage (312) for a floating body is formed so that a mooring line (400) can vertically penetrate the floating body (300).

[0053] In order to form a vertical penetration passage (312) for a floating body, a vertical guide pipe (312a) for a floating body is provided in the floating body (300).

[0054] The vertical guide tube (312a) for the floating body is a stainless steel tube provided in the floating body (300) to form a vertical penetration passage (312) for the floating body.

[0055] The mooring anchor (200) is anchored to the seabed.

[0056] A plurality of mooring line hooks (211) for anchors are formed on the mooring anchor (200).

[0057] The mooring line hooking portion (211) for multiple anchors is a portion that guides the movement of the mooring line (400) while the lower portion of the mooring line (400) is hooked. In this embodiment, as an example of the mooring line hooking portion (211) for multiple anchors, a U-shaped anchor penetration passage (211) is formed in the mooring anchor (200).

[0058] According to the embodiment, the mooring line hook (211) for the anchor can be applied to anything that can guide the movement of the mooring line (400) while the lower middle part of the mooring line (400) is hooked, and can be implemented in the form of a pulley, a fairlead, etc.

[0059] The mooring anchor (200) can be made of metal or concrete.

[0060] When the mooring anchor (200) is made of concrete, the mooring anchor (200) may include a concrete anchor body (210) and a U-shaped anchor guide tube (211a) built into the anchor body.

[0061] The concrete body (210) for an anchor can be manufactured so that a void is formed inside it or so that no void is formed inside it. In the case of the concrete body (210) for an anchor with a void formed therein, it is preferable to fill the void with a filler (sand, gravel, etc.).

[0062] The U-shaped guide tube (211a) for the anchor is a U-shaped tube made of stainless steel built into the concrete body (210) for the anchor to form a U-shaped penetration passage (211) for the anchor.

[0063] Although a gravity anchor is shown as a mooring anchor (200) in this embodiment, a penetration anchor, a suction anchor, etc. can also be used as a mooring anchor (200).

[0064] A weight unit (100) is positioned underwater between a floating body (300) and a mooring anchor (200), and is spaced apart from each of the floating body (300) and the mooring anchor (200).

[0065] The weight (100) has the property of sinking in water unless there is a special external force.

[0066] A plurality of weight body mooring line hooks (111) and a plurality of weight body vertical penetration passages (112) are formed in the weight body (100).

[0067] The mooring line hooking portion (111) for a heavy body is a portion that guides the movement of the mooring line (400) while the lower portion of the mooring line (400) is hooked. In this embodiment, as an example of the mooring line hooking portion (111) for a heavy body, a U-shaped passage (111) for a heavy body is formed in the weight body (100).

[0068] According to the embodiment, the mooring line hook (111) for a heavy body can be applied to anything that can guide the movement of the mooring line (400) while the lower middle part of the mooring line (400) is hooked, and can be implemented in the form of a pulley, a fairlead, etc.

[0069] A vertical penetration passage (112) for a heavy object is formed so that a mooring line (400) can penetrate vertically.

[0070] The weight body (100) can be made of metal or concrete.

[0071] When the weight body (100) is made of concrete, the weight body (100) may include a concrete body for the weight body (110), a U-shaped guide tube (111a) for the weight body built into the concrete body, and an upper and lower guide tube (112a) for the weight body.

[0072] The concrete body (110) for a heavy object can be manufactured so that a void is formed inside it or so that no void is formed therein. In the case of the concrete body (110) for a heavy object with a void formed therein, it is preferable to fill the void with a filler (sand, gravel, etc.).

[0073] The U-shaped guide pipe (111a) for a heavy body is a U-shaped pipe made of stainless steel built into a concrete body (110) for a heavy body to form a U-shaped penetration passage (111) for a heavy body.

[0074] The vertical guide pipe (112a) for the weight is a stainless steel pipe built into the concrete body (110) for the weight to form a vertical penetration path (112) for the weight.

[0075] Mooring lines (400, mooring cables) are used to connect a mooring anchor (200), a floating body (300), and a weight (100) to moor the floating body (300).

[0076] In this mooring system, a plurality of mooring lines (400) (four mooring lines in this embodiment) are provided to moor one floating body (300), and each of the mooring lines (400) has a closed curve shape.

[0077] Each mooring line (400) can be divided into a first part (410), a second part (420), and a third part (430) depending on the part to which it is attached.

[0078] The first part (410) is a part that is hung on a weight body (100), the second part (420) is a part that is hung on a mooring anchor (200), and the third part (430) is a part that is hung on a floating body (300).

[0079] The first part (410) is a part where both ends extend upward from the central lower part that is hung on the U-shaped penetration path (111) for the weight body (100).

[0080] The second section (420) is a section extending upwards at both ends from the central lower part that is hung on the U-shaped penetration passage (211) for anchoring of the mooring anchor (200) and passes through the vertical penetration passage (112) for weight of the weight (100).

[0081] The third section (430) is a section that extends downwards from the central upper section that is hung on the mooring line hook (311) for the floating body of the floating body (300) and passes through the vertical penetration passage (312) for the floating body of the floating body (300).

[0082] The third section (430) is connected to the first section (410) and the second section (420) so that the mooring line (400) forms a closed curve. That is, when the third section (430) is connected between the first section (410) and the second section (420), the mooring line (400) forms a closed curve.

[0083] A mooring line (400) of this type has a closed curve shape with one first section (410), one second section (420), and two second sections (430), but the number can be changed as long as a closed curve shape is formed.

[0084] The following description is provided with reference to Fig. 4.

[0085] Since the mooring line (400) has a closed curve shape and is continuously subjected to tension, the mooring line (400) is always maintained in a state of tension.

[0086] Therefore, the sum (L1+L2) of the distance (L1) between the floating body (300) and the weight (100) and the distance (L2) between the floating body (300) and the mooring anchor (200) is always maintained constant.

[0087] Meanwhile, since the floating body (300) floats on the sea surface due to buoyancy, the position of the floating body (300) changes according to the water level, and the position of the mooring anchor (200) is fixed to the sea floor.

[0088] Therefore, the distance (L2) between the floating body (300) and the mooring anchor (200) changes depending on the water level.

[0089] As a result, the distance (L2) between the floating body (300) and the mooring anchor (200) changes depending on the water level, and accordingly, the distance (L1) between the floating body and the weight (100) also changes.

[0090] In other words, if L2 decreases, L1 increases by that amount, and if L2 increases, L1 decreases by that amount.

[0091] The U-shaped guide tube (111a) for the weight provided on the weight (100) and the vertical guide tube (112a) for the weight, the U-shaped guide tube (211a) for the anchor provided on the mooring anchor (200), and the vertical guide tube (312a) for the floating body provided on the floating body (300) are all parts that come into contact with the mooring line (400) and are parts where friction occurs when the mooring line (400) moves, and are all made of stainless steel.

[0092] This is to enable smooth movement of the mooring line (400), protect the concrete body for the heavy object (110) or the concrete body for the anchor (210), and prevent corrosion even after long-term use.

[0093] Meanwhile, at least one of the weight body (100), the mooring anchor (200), and the floating body (300) can be manufactured using the technology described in Korean Patent Registration No. 10-2292821 (technology invented by the present inventor). The contents described in Korean Patent Registration No. 10-2292821 are considered to be incorporated into this specification, and a detailed description thereof is omitted.

[0094] Describes the operation of this mooring system.

[0095] < Improved restoring force by weight (100) >

[0096] When the weight body (100) is connected to the floating body (300), the center of gravity of the floating body (300) is lowered, thereby increasing the restoring force of the floating body (300). Accordingly, even if the floating body (300) tilts, it can be easily restored to its original horizontal state.

[0097] - Typically, the restoring force of a ship is expressed as the relationship between the center of buoyancy and the center of gravity, and the lower the center of gravity, the higher the restoring force is considered to be.

[0098] < Response to tidal differences and external shocks >

[0099] This mooring system can respond to tidal differences. That is, even when the water level changes, the shape of the mooring line (400) changes to match the water level, so that the tensile strength of the mooring line (400) can be maintained.

[0100] Furthermore, even when a very large shock, such as a tsunami or typhoon, is applied to the floating body (300), the mooring system can alleviate the local shock applied to the mooring line (400) by changing the shape of the mooring line (400) in response to the shock.

[0101] < Easy replacement of mooring line (400) >

[0102] Since the mooring line (400) of this mooring system has a closed curve shape, the mooring line (400) can be easily replaced.

[0103] This describes a case where one of the four mooring lines (400) is replaced. At this time, it must be possible to moor a floating body (300) with three mooring lines (400).

[0104] (In some cases, it may be desirable to moor with 6 to 8 mooring lines (400) and replace one of them.)

[0105] The mooring line (400) to be replaced is cut from the upper part of the floating body (300), and a new mooring line (400) is connected to one end of the mooring line (400) to be replaced. In other words, the mooring line (400) to be replaced and the new mooring line (400) are connected to form a continuous line.

[0106] Afterwards, by pulling the other end of the mooring line (400) to be replaced and removing the mooring line (400) to be replaced, the new mooring line (400) can be positioned in the original position of the mooring line (400) to be replaced.

[0107] Afterwards, the mooring line replacement work is completed by connecting both ends of the new mooring line (400).

[0108] In this way, since the mooring line replacement work is performed on the upper part of the float (300), underwater work for replacing the mooring line is unnecessary, and the overall replacement cost can be significantly reduced.

[0109] In addition, the cost of replacing mooring lines is reduced, and the mooring lines can be replaced at frequent intervals, thus freeing the user from corrosion problems. As a result, the mooring lines can be made thinner because only the mooring tensile force can be considered in the design of the mooring line thickness.

[0110] Additionally, since the mooring line can be made thinner, it becomes much easier to connect the mooring line to a mooring anchor, weight, or floating body.

[0111] <Prevention of tilting of a weight (100) or floating body (300) by a mooring line>

[0112] In this system, the mooring line (400) passes through the vertical penetration passage (112) for the heavy body and the vertical penetration passage (312) for the floating body while having sufficient tensile strength.

[0113] In this state, when the weight (100) or the floating body (300) tilts, the mooring line (400) that is tautly extended in the vertical direction comes into contact with the weight (100) or the floating body (300), thereby preventing the weight (100) or the floating body (300) from tilting and allowing the weight (100) or the floating body (300) to return to a horizontal state.

[0114] Figure 5 conceptually illustrates how tilting of a weight (100) or a floating body (300) is prevented by a mooring line (400).

[0115] < Very large support capacity due to U-shaped penetration >

[0116] In this system, the mooring line (400) is hung on the weight body (100) and the mooring anchor (200) through the U-shaped passage (111) for the weight body formed inside the concrete body (110) for the weight body and the U-shaped passage (211) for the anchor formed inside the concrete body (210) for the anchor, so the mooring line (400) is connected to the weight body (100) and the mooring anchor (200) with a very large supporting force.

[0117] < Application to floating offshore wind power generation >

[0118] The floating body of the present invention can be applied as a floating foundation for floating offshore wind power generation, and at this time, a wind turbine must be installed on the upper part of the floating body.

[0119] Since high restoring force can be achieved by manufacturing a float at a dock and connecting a weight to its bottom in advance, the work of installing a wind turbine on top of the float with the weight connected can be carried out at the dock. After that, the float with the wind turbine pre-installed is transported to the installation site, and at the installation site, only the work of mooring the float to a mooring anchor is carried out.

[0120] In other words, the overall cost can be reduced because there is no need to install wind turbines on top of floating bodies at sea.

[0121] Hereinafter, a second embodiment according to the present invention will be described.

[0122] This embodiment is the same as the first embodiment except that a plurality of weight bodies (100) are provided.

[0123] Depending on the embodiment, a plurality of mooring anchors (200) may also be provided.

[0124] The scope of the present invention is indicated by the claims set forth below rather than the detailed description above.

[0125] The present invention can be used to moor various types of floating bodies (or marine floating structures) floating on the sea surface.

Claims

1. A mooring system comprising a floating body floating on the sea surface due to buoyancy, a mooring anchor settled on the seabed, a weight positioned underwater between the floating body and the mooring anchor, and a plurality of mooring lines connecting the mooring anchor, the floating body, and the weight to moor the floating body: The above weight body is formed with a mooring line hook portion for the weight body to be hung on the lower part of the mooring line and a plurality of vertical passages for the weight body to be vertically penetrated by the mooring line; The above mooring anchor is formed with a mooring line hook portion for the anchor to hook the lower part of the mooring line; The above float is formed with a mooring line hook portion for the float to be hung on the upper portion of the mooring line and a plurality of vertical penetration passages for the float to be vertically penetrated by the mooring line; Each of the above mooring lines has a closed curve shape; The mooring line includes a first portion extending upward at both ends from a central lower portion that is hung on the mooring line hook for the weight body, a second portion extending upward at both ends from a central lower portion that is hung on the mooring line hook for the anchor and passing through a vertical passage for the weight body, and a third portion extending downward at both ends from a central upper portion that is hung on the mooring line hook for the floating body and passing through the vertical passage for the floating body, and being connected to the first portion and the second portion so that the mooring line forms a closed curve; A mooring system featuring:

2. In paragraph 1, A mooring system characterized in that the sum of the distance (L1) between the float and the weight and the distance (L2) between the float and the mooring anchor is constant, and the distance (L2) between the float and the mooring anchor changes according to the water level.

3. In paragraph 1, A mooring system characterized in that the weight body includes a concrete body for the weight body and a stainless steel vertical guide pipe for the weight body built into the concrete body for the weight body to form a vertical penetration passage for the weight body.

4. A mooring system including a floating body floating on the sea surface due to buoyancy, a mooring anchor settled on the seabed, a weight positioned underwater between the floating body and the mooring anchor, and a plurality of mooring lines connecting the mooring anchor, the floating body, and the weight to moor the floating body: The above weight body is formed with a U-shaped passage for the weight body to be hung at the lower part of the above mooring line; The above mooring anchor has a U-shaped through hole formed for the U-shaped anchor to be hung at the lower part of the mooring line; Each of the above mooring lines has a closed curve shape; The above mooring line includes a first portion extending upward at both ends from a central lower portion that is hung on the U-shaped passage for the weight body, a second portion extending upward at both ends from a central lower portion that is hung on the U-shaped passage for the anchor, and a third portion that is connected to the first portion and the second portion so that the mooring line forms a closed curve while extending downward at both ends from a central upper portion that is hung on a mooring line hook portion for a floating body provided on the floating body; A mooring system featuring:

5. In paragraph 4, A mooring system characterized in that the sum of the distance (L1) between the float and the weight and the distance (L2) between the float and the mooring anchor is constant, and the distance (L2) between the float and the mooring anchor changes according to the water level.

6. In paragraph 4: The above weight body includes a concrete body for the weight body and a stainless steel U-shaped guide tube for the weight body built into the concrete body for the weight body to form a U-shaped passage for the weight body; The above mooring anchor comprises a concrete body for the anchor and a stainless steel U-shaped guide tube for the anchor built into the concrete body for the anchor to form a U-shaped passage for the anchor; A mooring system featuring:

7. In paragraph 4: The above weight body is formed with a concrete body for the weight body and a plurality of vertical penetration passages for the weight body that penetrate the concrete body for the middle body in the vertical direction; The above floating body is formed with a plurality of vertical penetrating passages for the floating body that penetrate the floating body in the vertical direction; The second part of the above mooring line is arranged to pass through the vertical penetration passage for the weight body; The third part of the above mooring line is arranged to pass through the vertical penetration passage for the floating body; A mooring system featuring:

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