anchor

Abstract

The present invention provides an anchor for installing an anchor into the mooring ground in the penetrating direction, comprising a claw, a shank connected to the claw, and an anchor connector on the shank for attaching the claw to a mooring rope or mooring chain, wherein the shank comprises a left shank leg and a right shank leg, the left shank leg comprising a left connecting member for the anchor connector and a left engaging body located on and protruding from the left connecting member, the right shank leg comprising a right connecting member for the anchor connector and a right engaging body located on and protruding from the right connecting member, which engages with and cooperates with the left engaging body by mutual insertion in the insertion direction, and the left engaging body and the right engaging body have a polygonal cross-section in the direction lateral to the insertion direction.

Description

[Technical Field]

[0001] The present invention relates to an anchor for mooring heavy marine or offshore structures such as drilling platforms and floating wind turbines to a seabed mooring ground. [Summary of the Invention]

[0002] Such an anchor is generally composed of a fluke and a shank connected to the fluke. In conventional methods, the anchor is fully assembled on land and then transported by an anchor handling vessel to the mooring ground. Alternatively, there is a method where the fluke and shank are assembled as subassemblies on the anchor handling vessel, and the anchor is assembled immediately before being dropped into the sea. In particular, in the commissioning of floating wind turbines for offshore wind farms, economies of scale are utilized, and a large number of anchors are loaded to the offshore commissioning site at one time.

[0003] An object of the present invention is to provide an anchor that can be efficiently transported and assembled.

[0004] According to a first aspect, for installing an anchor into a mooring ground in a penetration direction, the present invention comprises: a fluke; a shank connected to the fluke; and an anchor connector on the shank for attaching the fluke to a mooring rope or a mooring chain, wherein the shank includes a left shank leg and a right shank leg, the left shank leg includes a left base connected to the fluke and joining to a left connecting member for the anchor connector, and a left engaging body located on the left connecting member and protruding from the left connecting member, the right shank leg includes a right base connected to the fluke and joining to a right connecting member for the anchor connector, and a right engaging body located on the right connecting member, protruding from the right connecting member, and cooperating with and engaging with the left engaging body by mutual insertion in an insertion direction, and the left engaging body and the right engaging body each have a polygonal cross section transverse to the insertion direction.

[0005] The anchor according to the present invention comprises a shank formed with a left shank leg and a right shank leg, and the shank can be pre-assembled by forming a subassembly of the anchor by cooperating the left engaging body of the left shank leg and the right engaging body of the right shank leg. Since both engaging bodies have a polygonal cross-section, the left shank leg and the right shank leg efficiently maintain their relative position to facilitate handling with respect to the anchor claw. For example, this subassembly can be connected to the anchor claw on an anchor handling vessel. Since the left shank leg and the right shank leg can be handled individually before assembling the shank, they can be stored efficiently, and a large number of anchors can be shipped to the sea trial area.

[0006] In one embodiment, the polygonal cross-section is a triangular or rectangular cross-section.

[0007] In one embodiment, the left-side engaging body and the right-side engaging body are prismatic in shape over the length in the insertion direction.

[0008] In one embodiment, at least one of the left-side engaging body and the right-side engaging body is provided with a containment chamber for enclosing the other left-side engaging body and the right-side engaging body, which have a polygonal cross-section and are inserted into the left-side engaging body and the right-side engaging body, which have a polygonal cross-section.

[0009] In one embodiment, the left engaging body and the right engaging body are formed in a polygonal structure from steel plates.

[0010] In one embodiment, the left-side engaging body and the right-side engaging body are hollow.

[0011] The embodiments described above work well in marine and underwater environments.

[0012] In one embodiment, the left-side engaging body has a left-side distal end that abuts against the right-side connecting member, or the right-side engaging body has a right-side distal end that abuts against the left-side connecting member. The abutment of the left-side distal end or the right-side distal end defines and ensures a predetermined distance between the left-side connecting member and the right-side connecting member in the anchor connector.

[0013] In one embodiment, the left-side connecting member has a left-side mounting hole, the right-side connecting member has a right-side mounting hole, and the anchor includes a tension rod or tension bolt that extends through the left-side and right-side mounting holes and holds the left-side engaging body and the right-side engaging body inserted into each other.

[0014] In one embodiment, a tension rod or tension bolt extends through the left and right engaging bodies. The subassemblies of the left and right shank legs can be fixed to each other at the positions of the engaging bodies.

[0015] In one embodiment, the insertion direction extends laterally with respect to the penetration direction.

[0016] In one embodiment, the insertion direction extends laterally with respect to the longitudinal plane of symmetry of the anchor.

[0017] In one embodiment, the left base and the right base extend toward the claw from their respective left connecting member and right connecting member.

[0018] In one embodiment, the cooperating left-side engaging body and right-side engaging body extend between the left-side connecting member and the right-side connecting member, spaced apart from the anchoring connector.

[0019] In one embodiment, the anchor coupling portion includes a shackle hinged to a left coupling member and a right coupling member.

[0020] In one embodiment, the left base is formed by a left plate portion having a linear left base main surface extending from the left connecting member to the claw, and the right base is formed by a right plate portion having a linear right base main surface extending from the right connecting member to the claw. Thus, the shank legs can be efficiently stored in racks or stacks, for example, so that the base main surfaces are parallel to each other. In this way, a large number of anchors can be shipped to the sea trial area. For example, multiple identical left claw legs can be stored in a rack, and multiple identical right claw legs can also be stored in a rack. Alternatively, sets of left and right claw legs can be arranged so that the base main surfaces are parallel to each other and ultimately contact each other over most of their opposing surfaces.

[0021] In one embodiment, the left base main surface and the right base main surface extend parallel to each other along the claw.

[0022] In one embodiment, the left plate portion merges with the left connecting member at a transition angle, and the right plate portion merges with the right connecting member at the same transition angle.

[0023] In one embodiment, the left plate portion merges with the left connecting member at a transition angle along the left transition line, and the right plate portion merges with the right connecting member at the same transition angle along the right transition line, with the left transition line and the right transition line extending parallel to each other.

[0024] In one embodiment, the anchor comprises a left claw connector between the left base and the claw, and a right claw connector between the right base and the claw. This allows the subassembly to be connected to the claw on an anchor handling vessel.

[0025] In one embodiment, the left claw connector comprises at least one left mounting lug on the left base, at least one left insertion slot in the claw for inserting at least one left mounting lug, and at least one left mounting pin for insertion through at least one left mounting lug and claw; the right claw connector comprises at least one right mounting lug on the right base, at least one right insertion slot in the claw for inserting at least one right mounting lug, and at least one right mounting pin for insertion through at least one right mounting lug and claw.

[0026] In one embodiment, the claw comprises a central penetration plate extending between the left shank leg and the right shank leg, and left outer penetration plates and right outer penetration plates connected to the central penetration plate at the left shank leg and the right shank leg, respectively, and oriented downward from there toward the anchor coupling at an angle of 10 to 20 degrees relative to the central penetration plate.

[0027] In one embodiment, the left transition line and the right transition line extend parallel to the central entry plate.

[0028] According to a second aspect, the present invention provides a method for assembling an anchor. The anchor comprises a fluke for installing the anchor into the anchoring ground in the penetration direction, a shank connected to the fluke, and an anchor connector on the shank for attaching the fluke to a mooring rope or a mooring chain. The shank comprises a left shank leg and a right shank leg. The left shank leg has a left base connected to the fluke and joining to a left connecting member for the anchor connector, and a left engaging body located on the left connecting member and protruding from the left connecting member. The right shank leg has a right base connected to the fluke and joining to a right connecting member for the anchor connector, and a right engaging body located on the right connecting member, protruding from the right connecting member, and engaging and cooperating with the left engaging body via mutual insertion in the insertion direction. The left engaging body and the right engaging body have a polygonal cross-section transverse to the insertion direction. The method of the present invention comprises the steps of: moving the left shank leg and the right shank leg towards each other in the insertion direction such that the left engaging body and the right engaging body engage and cooperate with each other; and attaching the left shank leg and the right shank leg to the fluke, wherein the mutually engaged left engaging body and right engaging body maintain the relative positions of the left shank leg and the right shank leg. The method of the present invention has the aforementioned advantages.

[0029] Various aspects and features described and illustrated in the present specification can be applied individually wherever possible. These individual aspects, particularly the aspects and features described in the appended dependent claims, can be made the subject of divisional patent applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be described based on exemplary embodiments illustrated in the accompanying drawings.

[0031] [Figure 1A] Figure 1A is an isometric front view of an anchor according to an embodiment of the present invention. [Figure 1B] Figure 1B is an isometric rear view of an anchor according to an embodiment of the present invention. [Figure 1C] Figure 1C is a straight front view of an anchor according to an embodiment of the present invention. [Figure 1D]Figure 1D is a linear side view of an anchor according to one embodiment of the present invention.

[0032] [Figure 2A] Figure 2A is an exploded side view of the anchor as shown in Figures 1A to 1D. [Figure 2B] Figure 2B is a detailed exploded rear view showing the anchor assembly according to Figures 1A to 1D.

[0033] [Figure 3A] Figure 3A is a front view of the cross-section shown in Figure 1A, showing two identical claws compactly stacked to form the two anchors shown in Figures 1A to 1D, using the method shown in Figure 2. [Figure 3B] Figure 3B is a side view of the cross-section shown in Figure 1A, showing two identical claws compactly stacked to form the two anchors shown in Figures 1A to 1D, using the method shown in Figure 2.

[0034] [Figure 4] Figures 4A and 4B are top and side views of the two stacked shank legs forming the anchor shown in Figures 1A to 1D, as shown in Figure 2.

[0035] [Figure 5] Figures 5A and 5B are side and front views of a compact row of identical left-side shank legs for forming the anchor shown in Figures 1A to 1D in the manner shown in Figure 2.

[0036] [Figure 6] Figures 6A and 6B are side and front views of a compact row of identical right-side shank legs for forming the anchor shown in Figures 1A to 1D in the manner shown in Figure 2. [Modes for carrying out the invention]

[0037] Figures 1A to 1D show an anchor 1 according to one embodiment of the present invention. The anchor 1 is used to secure heavy offshore or marine structures, such as drilling platforms or floating wind turbines, to a seabed mooring ground for extended periods, sometimes for many years. The typical deadweight of the anchor 1 is 1 to 50 tons. The mooring ground may consist of sand, clay, mud, or a combination thereof.

[0038] The anchor 1 comprises a claw 10 and a shank 70 inclined diagonally forward relative to the claw 10, with an anchor connector (in this embodiment, a shackle 100 for connecting the anchor 1 to a mooring rope or mooring chain) provided at the end of the shank 70. The anchor 1 is substantially symmetrical with respect to its longitudinal plane of symmetry M, as shown in Figure 1C, except for certain features described later. The anchor 1 is formed to be inserted into the mooring ground in a forward penetration direction P substantially parallel to the longitudinal plane of symmetry M of the anchor 1.

[0039] The claw 10 is constructed from steel plate members welded together. As best shown in Figures 1A to 1C, the claw 10 includes a linear central penetration plate 11 that crosses the longitudinal plane of symmetry M. The central penetration plate 11 has a linear left edge 12 and a linear right edge 13 that extend parallel to each other and are equidistant from the longitudinal plane of symmetry M. The central penetration plate 11 also has a linear left inner penetration edge 15 and a linear right inner penetration edge 16, which extend at the same angle with respect to the longitudinal plane of symmetry M, and extend V-shaped backward from the front ends of the left edge 12 and the right edge 13, respectively, and merge with each other in the longitudinal plane of symmetry M. Between the rear ends of the left edge 12 and the right edge 13, the central penetration plate 11 has a linear central rear edge 17 that extends in a direction that crosses the longitudinal plane of symmetry M.

[0040] The claws 10 are connected to the left edge 12 and right edge 13 of the central penetration plate 11, respectively, and comprise a linear left outer penetration plate 20 and a linear right outer penetration plate 21, which are oriented downward away from the shackle 100 at the same angle C of 10 to 20 degrees relative to the central penetration plate 11. The left outer penetration plate 20 and the right outer penetration plate 21 each comprise a linear left outer penetration edge 22 and a linear right outer penetration edge 23, which extend rearward from the outer ends of the left inner penetration edge 15 and the right inner penetration edge 16, respectively, forming the left penetration plate tip 24 and the right penetration plate tip 25. The left outer penetration plate 20 and the right outer penetration plate 21 each comprise a linear left outer edge 26 and a linear right outer edge 27, respectively, which extend parallel to the longitudinal plane of symmetry M, and are continuous with the left rear edge 28 and the right rear edge 29, respectively, which extend toward the end of the central rear edge 17.

[0041] The claw 10 comprises a linear left beam plate 40 and a linear right beam plate 41 below and along the respective left and right edges 12 and right edges 13 of the central penetration plate 11. The left beam plate 40 and the right beam plate 41 each have a linear left lower edge 42 and a linear right lower edge 43 extending parallel to the longitudinal plane of symmetry M. The left lower edge 42 and the right lower edge 43 fuse to a left penetration tip 46 and a right penetration tip 47, which may be locally formed of hardened steel, via linear left lower penetration edge 44 and a linear right lower penetration edge 45, respectively. The left penetration tip 46 and the right penetration tip 47 project in the penetration direction P from the left penetration plate tip 24 and the right penetration plate tip 25. As best shown in Figure 1C, the left beam plate 40 and the right beam plate 41 have a connection angle D of 10 to 25 degrees with respect to the longitudinal plane of symmetry M, which is 18 degrees in this particular example, as will be described later.

[0042] As best shown in Figure 2A, the claw 10 has a left front insertion slot 50 and a left rear insertion slot 51 that penetrate the left edge 12 of the central penetration plate 11, providing access to the outside of the left beam plate 40. As best shown in Figure 2A, the claw 10 has a right front insertion slot 52 and a right rear insertion slot 53 that penetrate the right edge 13 of the central penetration plate 11, providing access to the outside of the right beam plate 41. The claw 10 has a left reinforcing plate 54 below the left outer penetration plate 20 and a right reinforcing plate 55 below the right outer penetration plate 21, these plates extending parallel and spaced to the left beam plate 40 and the right beam plate 41 on the opposite side of the left insertion slots 50, 51 and the right insertion slots 52, 53. The left beam plate 40 has left mounting holes 56 below the left insertion slots 50, 51, and the right beam plate 41 has right mounting holes 57 below the right insertion slots 52, 53.

[0043] The claw 10 comprises a central rear edge 17 and a rear penetration plate 60 that merges with the left rear edge 28 and the right rear edge 29. The rear penetration plate 60 hangs diagonally downward from the central penetration plate 11 and comprises a straight left lower penetration edge 61 and a straight right lower penetration edge 62. These penetration edges extend at the same angle with respect to the longitudinal plane of symmetry M, extend forward in a V-shape from the rear ends of the left rear edge 28 and the right rear edge 29, and merge with each other on the longitudinal plane of symmetry M.

[0044] The shank 70 is constructed by welding together steel plate members. The shank 70 consists of a left shank leg 71 and a right shank leg 72, which are joined to each other as described later, and are also joined to the claw 10.

[0045] As best shown in Figures 1A, 1C, and 2A, the left shank leg 71 comprises a left base 73 having a linear left base main surface Q across its entire surface, a left shackle mounting plate 81 having a left shackle mounting eye 83 and a left shackle main plate main surface T that is aligned with a linear left transition line 65 at a transition angle U with the left base main surface Q of the left base 73, and a left engaging body 85 projecting laterally from the left shackle mounting plate 81 with respect to the longitudinal symmetry plane M. The left shackle mounting plate 81 having the left shackle mounting eye 83 forms the left connecting member of the shackle 100. In this embodiment, the left shank leg 71 comprises a left front mounting lug 77 having a mounting eye 78 and, spaced therefrom, a left rear mounting lug 79 having a mounting eye 80. The left front mounting lug 77 and the left rear mounting lug 79 both protrude parallel to each other from the left base 73, with their main surfaces located within the left base main surface Q of the left base 73. The left shank leg 71 is provided with a concave, curved left penetration edge 75 that extends along the entire length between the left shackle mounting plate 81 and the left front mounting lug 77.

[0046] The right shank leg 72 comprises a right base 74 having a straight right base main surface R over its entire surface, a right shackle mounting plate 82 having a right shackle mounting eye 84 and a right shackle main plate main surface S that is aligned with a straight right transition line 66 at the same transition angle U as the right base main surface R of the right base 74, and a right engaging body 86 projecting laterally from the right shackle mounting plate 82 with respect to the longitudinal symmetry plane M. The right shackle mounting plate 82 with the right shackle mounting eye 84 forms the right connecting member of the shackle 100. In this embodiment, the right shank leg 72 comprises a right front mounting lug 87 with a mounting eye 88 and a right rear mounting lug 89 with a mounting eye 90, spaced apart from the right front mounting lug 87 and the right rear mounting lug 89, which project parallel to each other from the right base 74 with both main surfaces on the right base main surface R of the right base 74. The right-side shank leg 72 is provided with a concave, curved right-side penetration edge 76 that extends along the entire length between the right-side shackle mounting plate 82 and the right-side front mounting lug 87.

[0047] The left front mounting lug 77, left rear mounting lug 79, left front insertion slot 50, left rear insertion slot 51, and left beam plate 40 form part of the left claw connection of anchor 1. The right front mounting lug 87, right rear mounting lug 89, right front insertion slot 52, right rear insertion slot 53, and right beam plate 41 form part of the right claw connection of anchor 1.

[0048] The left shackle mounting plate 81 and the right shackle mounting plate 82 extend parallel to each other and parallel to the longitudinal plane of symmetry M. Deviating from the symmetry of the anchor 1 with respect to the longitudinal plane of symmetry M, the left engaging body 85 and the right engaging body 86 are different from each other. Both the left engaging body 85 and the right engaging body 86 are prismatic in shape and have the same polygonal or non-circular steel wall, forming a polygonal or non-circular cross-section that is constant in shape and dimensions along its entire length from the left shackle mounting plate 81 and the right shackle mounting plate 82 to the tip. In this embodiment, both the left engaging body 85 and the right engaging body 86 have a triangular cross-section. The left engaging body 85 and the right engaging body 86 are hollow and fit together in the insertion direction G across the longitudinal plane of symmetry M to form a shape lock that keeps the left shank leg 71 aligned with the right shank leg 72. In this embodiment, the hollow right-side engaging body 86 defines a containment chamber 95 for inserting and confining the left-side engaging body 85 in a closed shape against mutual rotation around the insertion direction G. In this embodiment, only one of the left-side engaging body 85 or the right-side engaging body 86 defines the distance between the left-side shackle mounting plate 81 and the right-side shackle mounting plate 82 by its length. In this embodiment, the right-side engaging body 86, which houses the left-side engaging body 85, defines the distance between the left-side shackle mounting plate 81 and the right-side shackle mounting plate 82. The left-side engaging body 85 and the right-side engaging body 86 are held engaged by a tension bolt 93. The tension bolt 93 passes through the left-side mounting hole 91 of the left-side shackle mounting plate 81, through the hollow left-side engaging body 85 and the right-side engaging body 86, and through the right-side mounting hole 92 of the right-side shackle mounting plate 82, and is tightened with a nut 94.

[0049] Shackle 100 is made of steel and has a D-bow 101 that merges with the left end eye 102 and the right end eye 103. Shackle 100 is enclosed between the left shackle mounting plate 81 and the right shackle mounting plate 82. A shackle bolt 104 with an end nut 105 passes through the right shackle mounting eye 84, the right end eye 103, the left end eye 102, and the left shackle mounting eye 83, allowing the D-bow 101 to rotate around the shackle bolt 104.

[0050] As shown in Figures 3A and 3B, multiple identical claws 10 can be efficiently stacked to form a claw stack 130. The claws 10 are open on the bottom and partially nested with each other, but due to the connection angle D, in the claw stack 130, the left lower edge 42 and the right lower edge 43 of the upper claws 10 stand beside the central penetration plate 11, and are positioned on the linear left outer penetration plate 20 and the linear right outer penetration plate 21 of the lower claws 10, respectively. The central penetration plate 11 of the lower claws 10 is compactly positioned between the left beam plate 40 and the right beam plate 41.

[0051] As shown in Figures 4A and 4B, the left shank leg 71 and the right shank leg 72 can be efficiently stacked on top of each other to form a stock in the form of a stack of shank parts 140, and in the projection across the parallel-extending left base main surface Q and right base main surface R, the left base 73 and the right base 74 overlap each other over most of their surfaces, i.e., at least 60% of their surfaces. In the layer formed by stacking the left base 73 on the right base 74, the left front mounting lug 77 and the right front mounting lug 87 form the outermost portion in the projection across the parallel-extending left base main surface Q and right base main surface R. Due to the curvature along the left penetration edge 75 and the right penetration edge 76, the left shackle mounting plate 81 and the right shackle mounting plate 82 are positioned in opposite directions outside the projection across the parallel-extending left base main surface Q and right base main surface R. The left shackle mounting plate 81 and the right shackle mounting plate 82 rise diagonally upward from the left base main surface Q and the right base main surface R, respectively, and abut each other in the contact region 141 where the left shackle mounting plate 81 and the right shackle mounting plate 82 meet at the left base 73 and the right base 74, respectively. The left engaging body 85 and the right engaging body 86 project in the same direction from the left shackle mounting plate 81 and the right shackle mounting plate 82, respectively, projecting toward the left base main surface Q and the right base main surface R. The right shank leg 72, having a longer right engaging body 86, is located above the left shank leg 71, and the distal end of the right shackle mounting plate 82 defines the maximum height of the stack of shank components 140. Alternatively, the left shank leg 71 and the right shank leg 72 can be efficiently stacked so that the left base 73 and the right base 74 are perfectly stacked on top of each other, with the left base main surface Q and the right base main surface R being parallel to each other, forming a stack of shank components where the left shackle mounting plate 81 and the right shackle mounting plate 82 stand diagonally apart in opposite directions. In this alternative stack of shank components, the left base 73 and the right base 74 perfectly overlap each other in projections across the parallel extending left base main surface Q and right base main surface R.

[0052] Alternatively, as shown in Figures 5A and 5B, multiple identical left-side shank legs 71 can be arranged so that their left-side base main surfaces Q are parallel to each other. In this case, the left-side engaging body 85 can abut against the left-side shackle mounting plate 81 of the adjacent left-side shank leg 71. Similarly, as shown in Figures 6A and 6B, multiple identical right-side shank legs 72 can be arranged so that their right-side base main surfaces R are parallel to each other. In this case, the right-side engaging body 86 can abut against the right-side shackle mounting plate 82 of the adjacent right-side shank leg 72. By arranging the base main surfaces Q and R in parallel, the shank legs 71 and 72 can be racked compactly.

[0053] The assembly of anchor 1 from its components is shown in Figure 2. The left shank leg 71 and the right shank leg 72 are not stacked, and are positioned relative to each other so that the left engaging body 85 can be fully inserted into the right engaging body 86 in the insertion direction G. Next, the left mounting lugs 77, 79 and the right mounting lugs 87, 89 are inserted in direction H into the left insertion slots 50, 51 and the right insertion slots 52, 53, respectively, and relative movement of the left shank leg 71 and the right shank leg 72 is permitted to facilitate this insertion. After insertion, the mounting eyes 78, 80 of the left shank leg 71 are aligned with the left mounting hole 56 of the left beam plate 40, and the mounting eyes 88, 90 of the right shank leg 72 are aligned with the right mounting hole 57 of the right beam plate 41, where mounting pins or bolts 58 are inserted. In the assembled state, the left base principal surface Q of the left base 73 and the right base principal surface R of the right base 74 both extend with respect to the longitudinal symmetry plane M at an opening angle E, and this opening angle E is equal to the connecting angle D.

[0054] It should be understood that the above description is intended to illustrate the operation of a preferred embodiment and does not limit the scope of the invention. From the above discussion, it will become clear to those skilled in the art that many variations fall within the scope of the invention.

Claims

1. An anchor comprising a claw, a shank connected to the claw, and an anchor connector on the shank for attaching the claw to a mooring rope or mooring chain, wherein the shank comprises a left shank leg and a right shank leg, The left shank leg comprises a left base portion connected to the claw and joining to the left connecting member for the anchor connector, and a left engaging body located on the left connecting member and protruding from the left connecting member. The right shank leg comprises a right base connected to the claw and joining to a right connecting member for the anchor connector, and a right engaging body located on the right connecting member and protruding from the right connecting member, which engages with and cooperates with the left engaging body by mutual insertion in the insertion direction, wherein the left engaging body and the right engaging body have a polygonal cross-section in the direction lateral to the insertion direction.

2. The anchor according to claim 1, wherein the polygonal cross-section is a triangular cross-section or a rectangular cross-section.

3. The anchor according to any one of claims 1 to 2, wherein the left engaging body and the right engaging body are prismatic in shape over the length in the insertion direction.

4. The anchor according to any one of claims 1 to 3, wherein at least one of the left engaging body and the right engaging body comprises a containment chamber for containing the other inserted left engaging body and the right engaging body having a polygonal cross-section.

5. The anchor according to any one of claims 1 to 4, wherein the left engaging body and the right engaging body are formed in a polygonal structure from steel plates.

6. The anchor according to any one of claims 1 to 5, wherein the left-side engaging body and the right-side engaging body are hollow bodies.

7. The anchor according to any one of claims 1 to 6, wherein the left engaging body has a left distal end that abuts against the right connecting member, or the right engaging body has a right distal end that abuts against the left connecting member.

8. The anchor according to any one of claims 1 to 7, wherein the left-side connecting member has a left-side mounting hole, the right-side connecting member has a right-side mounting hole, and the anchor comprises a tension rod or tension bolt that extends through the left-side mounting hole and the right-side mounting hole and holds the left-side engaging body and the right-side engaging body in a state of being inserted into each other.

9. The anchor according to claim 8, wherein the tension rod or tension bolt extends through the left-side engaging body and the right-side engaging body.

10. The anchor according to any one of claims 1 to 9, wherein the insertion direction extends laterally with respect to the penetration direction.

11. The anchor according to any one of claims 1 to 10, wherein the insertion direction extends laterally with respect to the longitudinal plane of symmetry of the anchor.

12. The anchor according to any one of claims 1 to 11, wherein the left base and the right base extend toward the claw from the respective left connecting member and right connecting member.

13. The anchor according to any one of claims 1 to 12, wherein the cooperating left-side engaging body and right-side engaging body extend between the left-side connecting member and the right-side connecting member at a distance from the anchor connector.

14. The anchor connector according to any one of claims 1 to 13, comprising a shackle hinged to the left-side connecting member and the right-side connecting member.

15. The anchor according to any one of claims 1 to 14, wherein the left base portion is formed of a left plate portion having a straight left base main surface extending from the left connecting member to the claw, and the right base portion is formed of a right plate portion having a straight right base main surface extending from the right connecting member to the claw.

16. The anchor according to claim 15, wherein the left base main surface and the right base main surface extend parallel to each other along the claw.

17. The anchor according to claim 15 or 16, wherein the left plate portion merges with the left connecting member at a transition angle, and the right plate portion merges with the right connecting member at the same transition angle.

18. The anchor according to claim 17, wherein the left plate portion merges with the left connecting member at the transition angle along the left transition line, the right plate portion merges with the right connecting member at the same transition angle along the right transition line, and the left transition line and the right transition line extend parallel to each other.

19. An anchor according to any one of claims 1 to 18, comprising a left claw connecting portion between the left base and the claw, and a right claw connecting portion between the right base and the claw.

20. The anchor according to claim 19, wherein the left claw connecting portion comprises at least one left mounting lug on the left base, at least one left insertion slot in the claw for inserting the at least one left mounting lug, and at least one left mounting pin for insertion through the at least one left mounting lug and the claw, and the right claw connecting portion comprises at least one right mounting lug on the right base, at least one right insertion slot in the claw for inserting the at least one right mounting lug, and at least one right mounting pin for insertion through the at least one right mounting lug and the claw.

21. The anchor according to any one of claims 1 to 20, wherein the claw comprises a central penetration plate extending between the left shank leg and the right shank leg, and a left outer penetration plate and a right outer penetration plate connected to the central penetration plate at the left shank leg and the right shank leg, respectively, and directed downward from there toward the anchor connector at an angle of 10 to 20 degrees with respect to the central penetration plate.

22. The anchor according to claims 18 and 21, wherein the left transition line and the right transition line extend parallel to the central penetration plate.

23. A method for assembling an anchor, the anchor comprising a claw, a shank connected to the claw, and an anchor connector on the shank for attaching the claw to a mooring rope or mooring chain, wherein the shank comprises a left shank leg and a right shank leg, The left shank leg comprises a left base portion connected to the claw and joining to the left connecting member for the anchor connector, and a left engaging body located on the left connecting member and protruding from the left connecting member. The right shank leg comprises a right base connected to the claw and joining to the right connecting member for the anchor connector, and a right engaging body located on the right connecting member and protruding from the right connecting member, which engages with and cooperates with the left engaging body by mutual insertion in the insertion direction, and the left engaging body and the right engaging body have a polygonal cross-section in the direction lateral to the insertion direction. The method comprises the steps of moving the left shank leg and the right shank leg toward each other in the insertion direction so that the left engaging body and the right engaging body engage and cooperate with each other, and attaching the left shank leg and the right shank leg to the claw, wherein the mutually engaged left engaging body and the right engaging body maintain the relative position of the left shank leg and the right shank leg.

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