JP5455836B2 - Floating fish reef equipment - Google Patents

Description

  The present invention relates to a floating fish reef apparatus installed in the ocean.

  Fishes are hard to live on flat riverbeds and seabeds, and have the habit of living on the reefs such as riverbeds, seabed topography, rocks, and coral reefs to protect themselves from natural enemies. Using this habit, artificial reefs are artificially installed on the bottom of the water, making it an ideal place for fish (nest). Artificial fish reefs are formed by combining concrete, stone, wood, thinned wood, shells discarded in the fishery industry, fiber reinforced plastic (FRP), and the like.

  In recent years, an artificial floating fish reef apparatus that collects fish by floating a reef body on the sea surface or in a middle layer below the sea surface, such as the middle-floor floating fish reef described in Patent Document 1, has appeared. The floating fish reef apparatus includes a reef body, an anchor, and a rope. As an example, the reef body is made of fishing nets, ropes, FRP, plastic steel, aluminum, etc., and moored at one point on a rope that extends from an anchor installed on the bottom of a water depth of several hundred to several thousand meters. It is positioned at a water depth of about 20m to 300m below. High-quality fish schools such as skipjack, tuna and yellowtail that migrate offshore are easily collected on the reefs installed in this way.

Registered Utility Model No. 3101433

  Generally, when an object such as a reef or a rope is positioned in the sea or near the sea surface, fish gather around the object. The inventor has obtained knowledge that fish gather in an area of a radius of about 100 to 1 km from the reef body positioned in this way. Therefore, the inventor considered that it would be expected that more fish would gather if the reefs were arranged in a plane.

  In this regard, the floating fish reef device such as the middle-layer floating fish reef described in Patent Document 1 is certainly effective in forming a stable fishing ground in the ocean. However, if one floating fish reef device is installed in the ocean, the reef will swing around the anchor. For this reason, another floating fish reef device cannot be installed in a range where the reef body floats and moves (for example, within a circle having a diameter of 1 mile). As a result, the middle-layer type floating fish reef described in Patent Document 1 must be installed in the ocean with a considerable distance, and is not suitable for forming a wide-area fishing ground that spreads across the surface.

  An object of the present invention is to form a wide-area fishing ground that spreads horizontally using reef bodies floating in water.

The floating fish reef apparatus of the present invention is
A first reef body, a first anchor, a first rope extending from the first anchor and connected to the first reef body, a second reef body, the first reef body, and the A second rope extending from at least one of the first ropes and connected to the second reef body; a second anchor; and extending from the second anchor and the second reef body and the second rope. and a third cord for connecting to at least one of the, further comprising a ring member provided around the circumference of the first rope, the second rope is Ru extending from said ring body.

  According to the present invention, the second reef body can be arranged around the first reef body with the range of floating movement constrained by the second rope and the third rope. A wide-area fishing ground that spreads horizontally can be formed using reef bodies floating in water.

It is a side view of a floating fish reef apparatus. It is a perspective view which shows the attachment method of the 1st reef body with respect to a 1st rope. It is a perspective view which shows another attachment method of the 1st reef body with respect to a 1st rope. (A) And (b) is a side view which shows the installation method of a floating fish reef apparatus. (A) thru | or (c) is a side view which shows the expansion method of a floating fish reef apparatus. It is a typical top view which shows the expanded floating reef apparatus.

  One embodiment will be described with reference to FIGS. FIG. 1 is a side view of the floating fish reef apparatus 101. The floating fish reef apparatus 101 is for collecting the fish F by using the habit that the fish F gathers on the reef body, and is installed in a desired sea area in a state of spreading in the horizontal direction. Anchor 113 (both described later).

  The floating fish reef apparatus 101 includes a first reef body 102, a first anchor 103, and a first rope 104.

  The first reef body 102 is a gabion 102a formed in a long cylindrical shape with fiber reinforced plastic (FRP), rope, steel, aluminum or the like, and a storage body (not shown) accommodated in the gabion 102a, It has a float body 102b that gives buoyancy to the gabion 102a. Further, in order to give buoyancy to the first reef body 102, another buoyancy body (not shown) may be added to the first reef body 102. The first reef body 102 is positioned in the underwater IS while being separated from the seabed BS.

  As the first anchor 103, for example, a weight type using a concrete block is employed. The first anchor 103 has a weight and a structure corresponding to the installation water depth. As another example, the first anchor 103 may be a holding force type. As yet another example, the first anchor 103 may be a chain. The first anchor 103 is placed on the seabed BS.

  The first rope 104 is a rope body having a diameter of several centimeters to several tens of centimeters, and extends from the first anchor 103 and is connected to the first reef body 102. Specifically, an example of the first cord 104 is a rope made of synthetic fiber such as polyethylene. The first rope 104 includes a main rope 104a and a secondary rope 104b. The main rope 104 a is connected to the first anchor 103 by the shank 105. The sub rope 104b extends from the main rope 104a so as to branch into a plurality of branches, and is connected to the lower portion of the first reef body 102. The total length of the first rope 104 including the main rope 104a and the secondary rope 104b is such that the first reef body 102 is at a predetermined water depth position in the underwater IS (for example, a water depth position of about 100 to 200 meters from the sea surface SS). Set to position. A plurality of hooks 104c are provided in the middle of the main rope 104a. The hook 104c extends from the main rope 104a and has a loop shape.

  The floating fish reef apparatus 101 further includes a second reef body 111, a second rope 112, a second anchor 113, and a third rope 114.

  The second reef body 111 is disposed in the underwater IS so as to be separated from the first reef body 102 in the horizontal direction. The second reef body 111 may be the same as the first reef body 102, or may be formed smaller than the first reef body 102.

  The second rope 112 is a rope body that is the same as or thinner than the first rope 104. The length of the second rope 112 is desirably equal to or greater than the length of the first rope 104. A more desirable length of the second cord 112 is about 1.5 times the length of the first cord 104.

  FIG. 2 is a perspective view showing how to attach the first reef body 102 to the first rope 104. As an example, as shown in FIG. 2, a plurality of second ropes 112 extend from the first reef body 102. In this case, a ring body 123 is provided around the main rope 104a. The ring body 123 has a diameter of about several tens of centimeters to 1 meter. As an example, the ring body 123 is formed by bending a fiber rope 123a into a ring shape. More specifically, the fiber rope 123a is passed through the ring-shaped portion 112a formed at the end of the second rope 112, the fiber rope 123a is bent into a ring shape, and both ends of the fiber rope 123a are connected by the connecting member 123b. Formed.

  FIG. 3 is a perspective view showing another method of attaching the first reef body 102 to the first rope 104. As another example, as shown in FIG. 3, a plurality of second ropes 112 extend from the first rope 104. In this case, the secondary rope 104b is passed through the ring-shaped portion 112a of the second rope 112, and the secondary rope 104b is bundled at the upper end portion of the main rope 104a.

  As yet another example, the second rope 112 may be attached to a gabion 102 a constituting the first reef body 102.

  Returning to FIG. The second reef body 111 is attached to at least one of the first reef body 102 and the first rope 104 by the attachment structure described above, and is attached to each of the plurality of second ropes 112 extending therefrom. Here, the second rope 112 tries to move toward the sea surface SS by its own buoyancy. For this reason, the ring body 123 does not fall toward the seabed BS. Moreover, even if the ring body 123 moves upward, it is blocked by the sub rope 104b and the first reef body 102.

  The second anchor 113 is formed in the same manner as the first anchor 103. The weight of the second anchor 113 is equal to or less than the weight of the first anchor 103. The first anchor 103 is spaced apart from the seabed BS.

  The third rope 114 is a rope body having the same length as the first rope 104. One end of the third rope 114 is connected to the second anchor 113 by the shank 115. The other end of the third rope 114 is connected to at least one of the second reef body 111 and the second rope 112. As an example, the end of the third cord 114 is formed in a ring shape, and the second cord 112 is passed therethrough. As another example, a ring body (not shown) may be provided around the circumference of the second cord 112, and the third cord 114 may be attached to the ring body. As yet another example, the third rope 114 may be directly attached to the second reef body 111. As yet another example, the third rope 114 may be attached to a secondary rope (not shown) extending downward from the second reef body 111.

  The floating fish reef apparatus 101 further includes a third reef body 121. The third reef body 121 is hooked by the hooking portion 104c and attached to the sub rope 104b, and is positioned downward with respect to the first reef body 102 in the underwater IS. The second reef body 111 may be the same as the first reef body 102, or may be formed smaller than the first reef body 102.

  FIG. 4A and FIG. 4B are side views showing a method for installing the floating fish reef apparatus 101. In FIG. 4A and FIG. 4B, the third reef body 121 is omitted. The floating fish reef apparatus 101 configured as described above is installed as follows. First, the floating reef apparatus 101 is mounted on one work ship 131, and a plurality of work ship groups 132 including the work ship 131 are positioned in a desired sea area. Subsequently, the first anchor 103, the third reef body 121, and the first reef body 102 are dropped from the work boat 131 onto the sea surface SS in this order. What is important here is that the first anchor 103 and the like are dropped on the sea surface SS while the ring body 123 is attached to the first rope 104 or the second rope 112 is attached to the secondary rope 104b. It is to be done. Thereby, the first anchor 103 falls and reaches the seabed BS, and the first reef body 102 and the third reef body 121 are positioned in the underwater IS. The second rope 112 extends toward the second reef body 111 near the sea surface SS without being dropped from the first reef body 102 located in the sea IS.

  Subsequently, the second reef body 111 and the second anchor 113 are transferred one by one to each work ship 131. Subsequently, the second reef body 111 is dropped on the sea surface SS from each work ship 131, and immediately after that, the individual work ship 131 is moved radially so as to move away from the first reef body 102 (FIG. 4A). ).

  Subsequently, the second anchor 113 is dropped from the individual work boat 131 onto the sea surface SS. The second anchor 113 falls and reaches the seabed BS (FIG. 4B). As a result, the second anchor 113 is arranged on the seabed BS in a circular shape so as to surround the first anchor 103 when seen in a plan view. The second reef body 111 is pulled by the second rope 112 and the third rope 114 to be positioned in the underwater IS, and is arranged in a circle so as to surround the first reef body 102 in plan view.

  In the sea area where the floating fish reef apparatus 101 is installed as described above, fish F (see FIG. 1) gather on the first reef body 102, the second reef body 111, and the third reef body 121. The fish F also gathers on the first rope 104, the second rope 112, and the third rope 114. That is, the sea area where the floating fish reef apparatus 101 is installed is a good fishing ground that spreads widely. At this time, the first reef body 102 becomes the center of the fishing ground.

  FIG. 5A to FIG. 5C are side views showing an expansion method of the floating fish reef apparatus 101. In the floating fish reef apparatus 101, the fishing ground formed by the floating fish reef apparatus 101 can be further expanded by attaching the fourth reef body 133 separately. The expansion method of the floating fish reef apparatus 101 is demonstrated based on Fig.5 (a) thru | or FIG.5 (c).

  First, the claw 135 is attached to the tip of the work cord 134, the work ship 131 is moved, the work cord 134 is pulled, and the claw 135 is hooked on the second cord 112 (FIG. 5A). Since the second rope 112 extends in the horizontal direction, it is easy for the claw 135 to hook the second rope 112.

  Subsequently, the work ship 131 is moved, and the second rope 112 is pulled up toward the sea surface SS (FIG. 5B). As a result, the second reef body 111 rises toward the sea surface SS. At this time, the second anchor 113 (see FIG. 4B) extending from the second reef body 111 and attached to the third rope 114 approaches the first rope 104 and the first anchor 103. When the second rope 112 extends from the ring body 123, the ring body 123 moves along the first rope 104 and approaches the sea surface SS.

  Subsequently, another work ship 131A is positioned in the vicinity of the second reef body 111 pulled up to the vicinity of the sea surface SS (FIG. 5C). On the work boat 131A, a ring body 136, a fourth reef body 133, and a fourth rope 137 connecting them are mounted in advance. A fifth rope 138 extends from the fourth reef body 133. A third anchor 139 is attached to the fifth rope 138. A worker (not shown) boarding the work boat 131 </ b> A performs the work of attaching the ring body 136 to the third rope 114 extending downward from the second reef body 111. This work is performed, for example, by a worker diving into the underwater IS as a diver. Moreover, as another example, it operates by operating the robot (not shown) with which the work ship 131A was equipped.

  Subsequently, the fourth reef body 133 is dropped on the sea surface SS from the work ship 131A, and immediately after that, the work ship 131A is moved radially away from the first reef body 102, and then the third anchor 139 is moved to the sea surface. Drop to SS (FIG. 5C). Thereby, the third anchor 139 falls and reaches the seabed BS. The fourth reef body 133 is pulled by the fourth rope 137 and the fifth rope 138 and positioned in the underwater IS, and surrounds the first reef body 102 and the second reef body 111 in plan view. Line up like a circle.

  FIG. 6 is a schematic plan view showing the expanded floating fish reef apparatus 101. Before the ring body 136 (see FIG. 5C), the fourth rope 137, and the fourth reef body 133 are attached to the floating fish reef apparatus 101, in the sea area where the floating fish reef apparatus 101 is installed, the first reef Fish F (see FIG. 1) gathers on the body 102, the second reef body 111, the third reef body 121 (see FIG. 1), and the like. That is, in the sea area where the floating fish reef apparatus 101 is installed, the first fishing ground L1 is formed so as to surround the first reef body 102 and the second reef body 111 in a plan view. And the ring body 136 (refer FIG.5 (c)), the 4th rope 137, and the 4th reef body 133 are added to the floating fish reef apparatus 101 by the expansion method demonstrated based on Fig.5 (a)-FIG.5 (c). Are attached to the fourth reef body 133, and a second fishing ground L2 wider than the first fishing ground L1 is formed.

  In addition, as shown by the code | symbol ADD1 in FIG. 6, in the expansion method demonstrated based on FIG. 5 (a)-FIG.5 (c), the 3rd rope 114 (FIG.5 (c) extended from the 2nd reef body 111 is shown. A plurality of the fourth ropes 137 may be attached to (see)). In this case, it is desirable that the fourth reef body 133 attached to each of the fourth ropes 137 be positioned so as to be separated from any of the other fourth reef bodies 133 and the second reef bodies 111. .

  Further, as indicated by reference numeral ADD2 in FIG. 6, the expansion method described based on FIGS. 5A to 5C is applied, and the fourth rope 137 extending in the horizontal direction in the underwater IS is attached to the claw 135 ( The fifth cord 138 extending from the fourth reef body 133 by hooking in FIG. 5 (a), FIG. 5 (b), etc.) and lifting the fourth reef body 133 toward the sea surface SS (FIG. 5 (c)). You may attach new ropes, reefs and anchors to the In this case, a fishing ground wider than the second fishing ground L2 is formed.

  With reference to FIG. 5A, FIG. 5B, FIG. 5C, and FIG. 6, a method of collecting the floating fish reef apparatus 101 will be described. From the viewpoint of environmental measures and resource saving, it is required to remove and collect reefs that have passed the useful life (generally about 10 years). When collecting each part of the floating fish reef apparatus 101 positioned in the underwater IS or the seabed BS, first, the work boat 131 is moved to move the reef body farthest from the first reef body 102 (for example, the fourth reef). A cord (for example, the fourth cord 137) extending horizontally from the reef body of the body 133) is hooked by the claws 135, and this reef body (in this case, the fourth reef body 133) and an anchor connected thereto (in this case) The third anchor 139) is pulled up and recovered toward the sea surface SS. Subsequently, the ring body (in this case, the ring body 136) connecting the reef body (in this case, the fourth reef body 133) is removed. At this time, since the ring body 136 is movable along the third rope 114, the reef body, the anchor, and the ring body can be easily collected. In this manner, the reef bodies are sequentially collected from those located at locations away from the first reef body 102, and finally the first reef body 102 and the third reef body 121 are collected.

  Thus, according to the floating fish reef apparatus 101, the first reef body 102 is disposed in a desired sea area, the second reef body 111 is disposed around the first reef body 102, and the second reef body 102 is disposed. The range in which the reef body 111 floats and moves can be restrained by the second rope 112 and the third rope 114. Thereby, a wide-area fishing ground spreading in the horizontal direction is formed by reef bodies (first reef body 102, second reef body 111, third reef body 121, etc.) floating in the underwater IS. The floating fish reef apparatus 101 includes a rope extending horizontally in the underwater IS. For this reason, the operation | work which attaches a new reef body (for example, 4th reef body 133) to the floating fish reef apparatus 101 so that it may spread from the 1st reef body 102 can be easily performed by a small facility (work boat 131 grade | etc.,). The floating fish reef apparatus 101 can be expanded to be a huge one spreading like a spider web. In addition, the collection work of the floating fish reef apparatus 101 is facilitated.

  Further, when the ring body 123 is positioned around the circumference of the first rope 104 and the second rope 112 is extended from the ring body 123, the second rope 112 moves along the first rope 104. For this reason, expansion and recovery of the floating fish reef apparatus 101 are facilitated. In this case, since the second cable 112 is attached to the first cable 104 via the ring body 123, the structure of the first cable 104 is not complicated.

  Further, when the third reef body 121 is attached in the middle of the first rope 104, the fishing ground can be developed not only in the horizontal direction but also in the vertical direction, and various fish F can be collected.

  Note that the second rope 112 extending from the first rope 104 may be plural or singular. If it is singular, the fishing grounds are developed in a straight line.

DESCRIPTION OF SYMBOLS 101 Floating fish reef apparatus 102 1st reef body 103 1st anchor 104 1st rope 111 2nd reef body 112 2nd rope 113 2nd anchor 114 3rd rope 121 3rd reef body 123 Ring body

Claims (3)

The first reef body;
A first anchor;
A first cord extending from the first anchor and connected to the first reef body;
A second reef body,
A second rope extending from at least one of the first reef body and the first rope and connected to the second reef body;
A second anchor;
A third cord extending from the second anchor and connected to at least one of the second reef body and the second cord;
Equipped with a,
A ring body provided around the circumference of the first rope;
The floating fish reef apparatus , wherein the second rope extends from the ring body . There are a plurality of the second ropes,
The second reef body is provided in each of the second ropes,
The floating fish reef apparatus according to claim 1. A third reef body attached in the middle of the first rope;
The floating fish reef apparatus according to claim 1 or 2.

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