Vessel-type float and vessel-type float system

Abstract

To provide a container-type float that can simplify the floating and sinking of buoyant objects in water. [Solution] A container-type float having a hollow portion for storing air inside, a first end and a second end opposite the first end, to which a buoyant object to which buoyancy is added can be connected, the hollow portion having a first injection port 21, and when placed in a body of water, the buoyancy added to the buoyant object 30 varies depending on the amount of water that enters through the first injection port.

Description

[Technical Field]

[0001] The present invention relates to a vessel-type float and a vessel-type float system. [Background technology]

[0002] Marine aquaculture is a method of cultivating fish, shellfish, and other marine products using facilities installed on the surface of the ocean or large lakes. There are various types of marine aquaculture using floats. For example, frame raft aquaculture is a method of cultivating shellfish and seaweed using ropes, nets, or aquaculture cages suspended on floats or frame rafts on the ocean surface, and is characterized by utilizing natural nutrient supplies. On the other hand, floating frame net aquaculture is suitable for fish farming, and by maintaining the net at an appropriate depth, it provides an environment in which fish can grow healthily. Furthermore, floating long-line aquaculture allows for the cultivation of shellfish using long lines floating on the ocean surface, enabling large-scale farming and efficient harvesting. In addition to these farming methods, water quality control devices monitor the water quality of the farming environment and help maintain optimal oxygen levels, salinity, and temperature. Mooring systems are used to securely fix the farming equipment in place and protect it from waves and currents. Furthermore, feeding devices are important in fish farming and are used to ensure even and efficient feeding. The combination of these technologies and methods enables marine aquaculture to produce high-quality seafood in an efficient and environmentally friendly manner. The flexibility and efficiency of float-based aquaculture technology are essential factors for aquaculture farmers and make a significant contribution to the sustainable use of marine resources. The advancement and application of these technologies plays an important role in the development of marine aquaculture and holds great potential for further advances in the management and use of marine resources in the future.

[0003] Patent documents 1 to 3 show marine aquaculture techniques that utilize floats. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2004-113003 [Patent Document 2] Jikko No. 56-81669 [Patent Document 3] Special Publication No. 2013-523136 Summary of the Invention [Problem to be solved by the invention]

[0005] In marine aquaculture, it is desirable to sink fishing gear below the sea surface during stormy weather. Various fishing gear, such as rafts, cages, and fishponds, are used in marine aquaculture. These equipment are at risk of damage during bad weather, particularly stormy weather accompanied by strong winds and high waves. Therefore, when stormy weather is predicted, it is necessary to protect the fishing gear by sinking it below the sea surface. This is often achieved by adjusting floats used to stabilize the aquaculture equipment. Moving the equipment below the sea surface prevents damage or loss to the fishing gear and ensures the safety of the cultured organisms (see, for example, Patent Documents 2 and 3). However, this sinking process is technically complex, and moving the equipment requires time and effort, posing a significant operational challenge for aquaculture farmers. [Means for solving the problem]

[0006] The container-type float of the present invention has a hollow portion for storing air inside, a first end and a second end opposite the first end, a buoyant object to which buoyancy is to be added can be connected to the second end, the hollow portion has a first injection port, and when placed in a body of water, the buoyancy added to the buoyant object varies depending on the amount of water that enters through the first injection port. [Effects of the Invention]

[0007] This makes it easy to float and sink buoyant objects in water. [Brief explanation of the drawings]

[0008] [Figure 1a] Example of the present invention (one inlet type) [Figure 1b] Example of the present invention (one inlet type) [Figure 1c] Example of the present invention (one inlet type) [Figure 1d] Example of the present invention (one inlet type) [Figure 1e] Example of the present invention (one inlet type) [Figure 1f] Example of the present invention (one inlet type) [Figure 1g] Example of the present invention (one inlet type) [Figure 1h] Example of the present invention (one inlet type) [Figure 1i] Example of the present invention (one inlet type) [Figure 1j] Example of the present invention (one inlet type) [Figure 1k] Example of the present invention (one inlet type) [Figure 1l] Examples of the present invention (one inlet type and two inlet type) [Figure 2a] Example of the present invention (with penetration member) [Figure 2b] Example of the present invention (with penetration member) [Figure 2c] Example of the present invention (with penetration member) [Figure 3a] Example of the present invention (two injection ports type) [Figure 3b] Example of the present invention (two injection ports type) [Figure 3c] Example of the present invention (two injection ports type) [Figure 3d] Example of the present invention (two injection ports type) [Figure 3e] Example of the present invention (two injection ports type) [Figure 4a] Example of the present invention (with internal slide float) [Figure 4b] Example of the present invention (with internal slide float) [Figure 4c] Example of the present invention (without internal slide float) [Figure 4d] Example of the present invention (with internal slide float) [Figure 4e] Example of the present invention (with internal slide float) [Figure 5a] Example of the present invention (with internal slide float and float cable) [Figure 5b] Example of the present invention (with internal slide float and float cable) [Figure 5c] Example of the present invention (with internal slide float and float cable) [Figure 5d] Example of the present invention (with internal slide float and float cable) [Figure 6a] Example of the present invention (with external slide float) [Figure 6b] Example of the present invention (with external slide float) [Figure 6c] Example of the present invention (with external slide float) [Figure 6d] Example of the present invention (with external slide float) [Figure 6e] Example of the present invention (with external slide float) [Figure 6f] Example of the present invention (with external slide float) [Figure 6g] Example of the present invention (with external slide float) [Figure 7a] Examples of the present invention (variations) [Figure 7b] Examples of the present invention (variations) [Figure 7c] Examples of the present invention (variations) [Figure 7d] Examples of the present invention (variations) [Figure 7e] Examples of the present invention (variations) [Figure 7f] Examples of the present invention (variations) [Figure 7g] Examples of the present invention (variations) [Figure 8a] Example of the present invention (longline) [Figure 8b] Example of the present invention (longline) [Figure 8c] Example of the present invention (longline) [Figure 8d] Example of the present invention (longline) [Figure 8e] Example of the present invention (longline) [Figure 8f] Example of the present invention (longline) [Figure 8g] Example of the present invention (longline) [Figure 9a] Example of the present invention (longline) [Figure 9b] Example of the present invention (longline) [Figure 9c] Example of the present invention (longline) [Figure 9d] Example of the present invention (longline) [Figure 9e] Example of the present invention (longline) [Figure 10a] Example of the present invention (fish farming raft) [Figure 10b] Example of the present invention (fish farming raft) [Figure 10c] Example of the present invention (fish farming raft) [Figure 11a] Example of the present invention (aquaculture cage) [Figure 11b] Example of the present invention (aquaculture cage) [Figure 11c] Example of the present invention (aquaculture cage) [Figure 11d] Example of the present invention (aquaculture cage) [Figure 12a] Example of the present invention (aquaculture cage) [Figure 12b] Example of the present invention (aquaculture cage) [Figure 13a] Example of the present invention (pier 1) [Figure 13b] Example of the present invention (pier 1) [Figure 13c] Example of the present invention (Pier 2) [Figure 13d] Example of the present invention (Pier 2) [Figure 13e] Example of the present invention (Pier 2) [Figure 13f] Example of the present invention (Pier 2) [Figure 13g] Example of the present invention (pier or aquaculture raft) [Figure 14] Example of the present invention (fouling prevention film) [Figure 15] Example of the present invention (fence) [Figure 16a] Example of the present invention (float) [Figure 16b] Example of the present invention (float) [Figure 16c] Example of the present invention (float) [Figure 16d] Example of the present invention (float) [Figure 16e] Example of the present invention (float) [Figure 17a] Example of the present invention (photo) [Figure 17b] Example of the present invention (photo) [Figure 17c] Example of the present invention (photo) [Figure 17d] Example of the present invention (photo) [Figure 17e] Example of the present invention (photo) [Figure 18a] Example of the present invention (vessel-type float system) [Figure 18b] Example of the present invention (vessel-type float system) [Figure 19a] Example of the present invention (vessel-type float system) [Figure 19b] Example of the present invention (vessel-type float system) [Explanation of symbols]

[0009] 10. Hollow part of the container-type float 10c Bottom hollow part 11 First end 12 second end 15 Float Cap 16 Float internal weight 21 First inlet 21a First inlet 21b First inlet 22 Second Inlet 25 Closed inlet 26 Drain 28 Intake and Exhaust 30 Buoyant Objects 31 Buoyant object (cage) 32 Buoyant object (pier) 33 Buoyancy object (anti-pollution membrane) 34 Fence 35 Connection point with buoyant object 38 Hanging Cable 40 Penetration member 45 Inlet of infiltration element 50 Internal slide float (free) 52 Internal slide float (connected) 53 Float Cable 54 External slide float 56 Upper float stopper 57 Lower float stopper 58 Long line / aquaculture cable 100 Container type float / 1st float / 2nd float / 3rd float 200 Container-type float system 205 Float Weight 210 Hollow Pipe 220 Hollow pipe inlet 255 External Float 256 Upper float stopper 257 Lower float stopper 260 Hollow Pipe Float DETAILED DESCRIPTION OF THE INVENTION

[0010] An embodiment of the present invention will be described in detail with reference to the drawings. First, let's explain the principle behind container-type floats. According to Archimedes' principle, an object in a fluid experiences an upward force (buoyancy) equal to the weight of the fluid displaced by that object. For example, if a hollow container with a volume of one liter is submerged in water, the container experiences a buoyancy equivalent to approximately one kilogram (to be precise, the weight of the container itself must also be taken into account). This is roughly equal to the weight of one liter of water displaced by the container in the water. By utilizing this principle, buoyancy can be effectively imparted to fishing gear or other buoyant objects by hanging them from the bottom of the container. This method contributes to improving the operability of fishing gear, its stability in the water, and its ease of handling. The container-type float of the present invention (hereinafter referred to as "float") is intended for use in bodies of water such as the sea, lakes, brackish waters, etc. Although the following description uses the terms sea surface and seabed for convenience, the scope of application of the present invention is not limited to use in the sea but is widely applicable to bodies of water such as lakes and brackish waters. The buoyant objects of the present invention include not only fishing gear such as cables, containers, aquaculture cages, and aquaculture rafts, but also general components used in water areas such as piers, pollution prevention membranes, fences, and weights. When these components (buoyant objects) are placed in water, they will sink toward the bottom of the water area due to their own weight, but their position in the water can be controlled by using floats. Such floats may also be called sink-float floats, mooring floats, container-type sink-float floats, container-type mooring floats, etc.

[0011] The float of the present invention has a hollow portion for storing air. The hollow portion is provided with a first inlet through which water can enter from the outside (*Depending on the embodiment, a second inlet may also be provided). The float has a first end (upper end) and a second end (lower end) opposite the first end. It is intended that a buoyant object be placed (hanged) at the lower end of the float. When the water surface is calm, water is less likely to enter through the first inlet on the float. Specifically, the distance between the water surface and the first inlet is high enough compared to the wave height. When the weather worsens and the waves get higher, water will enter the hollow part of the float through the first inlet. By adjusting the position of the first inlet, the height of the waves that will enter the float can be selected. When water accumulates in the hollow portion of the float, the float becomes heavier in proportion to the amount of water, and as the amount of air it can store decreases, the buoyancy that the float can provide to a buoyant object decreases. The position (particularly the vertical position) of the buoyant object connected to the float also fluctuates in the sea in response to fluctuations in buoyancy. The float of the present invention can adjust the amount of water that enters the hollow portion of the float through various means, as described in detail below, and can freely control the buoyancy provided to the buoyant object.

[0012] The hollow portion of the float of the present invention does not need to be sealed as long as it can provide buoyancy to a buoyant object connected to (or suspended from) the second end (lower end). The air in the hollow portion is connected to the outside air (atmosphere) through a first inlet or the like provided in the container. When the float of the present invention is placed in a body of water, the second end (bottom end) is located vertically below and the first end (top end) is located above. A weight or the like may be placed near the bottom end to adjust the balance and position of the float.

[0013] The float of the present invention is preferably made of a material that is highly weather-resistant and water-resistant, and is highly resistant to saltwater environments, sunlight, and mechanical shocks. Float shapes and sizes vary depending on the farming method used and the type and weight of equipment, making it possible to select the float that best suits the specific farming conditions. The preferred shape of the float is a cylindrical or rectangular tube, but is not limited to these. Furthermore, plastics such as high-density polyethylene, PVC, and polystyrene are commonly used as materials. These materials are lightweight yet strong, and are resistant to corrosion by seawater. However, the container-type float of the present invention is not limited to these examples, and any material and structure that includes the specific features of the present invention and can impart a certain level of buoyancy to a buoyant object may be used.

[0014] <Example 1-1> This Example 1 will be explained using Figures 1a to 1c. These figures depict a container-type float 100 having a hollow portion 10 between a first end 11 (upper end) and a second end 12 (lower end). A buoyant object connection point 35 is provided at the second end of the float 100, from which a buoyant object 30 can be suspended. In the figures, the buoyant object 30 is suspended via a cable 38. In this embodiment, a first inlet 21 is provided on the side of the float between the first end 11 and the second end 12 . As shown in Figure 1a, the buoyant object 30 is anchored at a predetermined position below the water surface without sinking to the bottom due to the buoyancy of the float 100. In this case, the buoyant object 30 is held in the opposite direction to gravity by the buoyant force from the float 100. As a result, in Figure 1a, the buoyant object 30 is submerged a certain distance d below the water surface. This distance d depends on the weight of the buoyant object 30 suspended from the float 100. 1b shows the float 100 placed in water when the waves are high. At this time, water gradually flows into the hollow portion 10 of the float 100 from the first inlet 21, and the weight of the flowing water causes the float 100 to sink further. This reduces the buoyancy that the float 100 can provide to the buoyant object 30, causing the buoyant object to sink. 1c shows that the hollow portion 10 of the float 100 has further filled with water, causing the entire float to sink completely below the water surface. In this situation, the float 100 and the buoyant object 30 will automatically sink below the water surface without human control due to rough weather or a turbulent water surface. In FIG. 1c, the first inlet is submerged below the water surface, and the space between the first inlet 21 and the second end 12 of the hollow portion 10 is filled with water. In this case, the air remaining between the first end 11 and the first inlet 21 becomes the main source of buoyancy. In other words, if the hollow portion 10 of the float were completely filled with water, the weight of the float and its buoyancy would cancel each other out, causing the float to sink. However, if there is air between the first end 11 and the first inlet 21 as in FIG. 1c, it is possible to add buoyancy to the buoyant object 30 equal to the weight of water equivalent to the volume of this air.

[0015] The installation position, shape, and size of the first inlet 21 can be selected in a variety of ways depending on the purpose. If the first inlet 21 is located away from the first end 11, water will easily enter the float 100. Conversely, if the first inlet 21 is located closer to the first end 11, water will be less likely to enter the float 100. This means that by changing the height of the inlet, the height of the waves at which the float sinks can be controlled. Figure 1d shows an example in which the first water inlet is installed at various positions between the first end and the second end. In the embodiment shown on the right side of Fig. 1d, the float 100 includes an internal slide float 50 to accommodate a state in which the hollow portion of the float 100 is completely filled with water. This internal slide float 50 is a mechanism for maintaining the buoyancy of the float 100 even when the hollow portion is filled with water (Note: Details of the internal slide float 50 will be described in detail in another embodiment). Furthermore, increasing the size of the inlet makes it easier for water to enter the float 100. On the other hand, decreasing the size of the inlet makes it more difficult for water to enter. In other words, by adjusting the size of the water inlet, it is possible to adjust the time it takes for the float 100 to sink. Figure 1e shows four embodiments with different sizes of the first inlet.

[0016] FIG. 1f shows the float 100 of the embodiment of FIG. 1d, with a buoyant object 30 suspended from it, and the hollow portion from the second end 12 (bottom end) to the first inlet 21 filled with water. This illustration shows the float 100 sinking below the water surface depending on the amount of water in the hollow portion. This shows that by adjusting the position of the first inlet, the buoyant object 30 can be made to sink to a desired position. Also, in the embodiment of FIG. 1f(4), the hollow portion is completely filled with water, so the float cannot obtain buoyancy and sinks to the bottom of the water. However, as in the embodiment of FIG. 1f(5), it is possible to prevent the float from sinking to the bottom of the water by previously placing an internal slide float 50 inside.

[0017] Figures 1g and 1h show embodiments in which the length of the float 100 is changed and the distance from the lower end 12 of the first inlet 21 is kept constant, thereby unifying the flooded wave height and enabling the float to adjust the water depth after flooding. Figure 1g shows that even when water is filled up to the first inlet, sufficient buoyancy exists for the buoyant object 30, and the buoyant object is located at the same water depth in all embodiments. Figure 1h shows an embodiment in which the weight of the buoyant object 30 is increased compared to Figure 1g. Figure 1h(1) has the largest amount of air between the first inlet and the first end (upper end) 11 of the three embodiments, resulting in the greatest buoyancy. Because the buoyancy is sufficient for the weight of the buoyant object 30, the first inlet remains slightly sunken in the embodiment of Figure 1h(1). Meanwhile, Figures 1h(2) and 1h(3) show the buoyant object 30 sinking further due to its weight. FIG. 1h shows that the choice of float 100 allows the buoyant object 30 to be positioned in various locations in the ocean.

[0018] FIG. 1i shows an embodiment having a float-integrated weight 16 located inside the float 100 (near the second end (lower end) 12). In all embodiments, the shape of the float 100 and the position of the first injection port are the same, but the weight of the weight 16 differs. The heavier the weight, the deeper the float 100 can be made to sink. By arranging the float-integrated weight 16 in this way, the position of the float 100 in the water can be adjusted. In this embodiment, the weight is located inside the float 100, but a weight that can be installed on the outside of the outer wall of the float 100 may also be used.

[0019] Figure 1j shows an example of a variation of the injection port. In Figure 1j(1), the inlet is configured as a check valve. Water that enters through this inlet 21 (check valve) does not exit from this inlet. The float 100 has multiple holes, and depending on the usage situation, unused holes can be sealed with lids or plugs to prevent water from entering, and only the holes that are in use can function as injection ports. Figure 1j(2) shows an example in which three of the four holes on the side of the float 100 are sealed with lids, and the second hole from the top is used as the first injection port 21. In this way, the position of the first injection port can be easily changed depending on the usage situation of the float 100. As shown in Figure 1j(3), the first injection port 21 can also be provided at the top of the float 100, and in this case, the hole at the top can be closed at any time with a float cap 15. If the first injection port is provided at the top of the float, when the float 100 sinks below the water surface, the hollow portion 10 of the float will fill with water, causing it to lose buoyancy and sink to the bottom. For this reason, it is recommended that a buoyancy means such as an internal slide float be installed inside the float 100, as in the embodiment shown in Figure 1f(5).

[0020] Figure 1k shows an embodiment of a float 100 with injection ports already installed in three places, two of which are closed and the remaining one is used as the first injection port 21. The right side of Figure 1k shows the float 100 of this embodiment installed in the sea and filled with water from the bottom of the hollow portion 10 to the first injection port 21.

[0021] A preferred example of the position of the first injection port provided on the side of the container-type float 100 will be described using FIG. 11. This embodiment is characterized in that the buoyancy obtained when the float 100 is submerged in water depends on the volume (mainly air) from the first end 11 to the first injection port 21. Therefore, it is essential to appropriately adjust this volume. If the total volume of the hollow portion 10 is V1 and the volume from the first end 11 to the top of the first injection port 21 is V2, V2 is preferably within the range of 10% to 60% of V1. More preferably, V2 is within the range of 20% to 50% of V1. This principle also applies to Example 2, which includes first and second injection ports. In an example using a sliding float, the sliding float itself provides buoyancy, allowing for more flexibility in determining the position of the first injection port.

[0022] <Example 1-2> FIG. 2a shows an infiltration member 40 installed in the first injection port 21 of the float 100. This infiltration member 40 is hollow like a pipe or hose, and has a structure through which water flows. One end of the infiltration member 40 is connected to the first injection port 21, and the other end (other end) is located above the first injection port. Even if there are multiple injection ports, it is possible to provide such an infiltration member 40 for each injection port. When a float 100 equipped with a penetration member 40 is placed in a body of water, water enters the float 100 from the tip of the penetration member 40 (the inlet 45 of the penetration member) rather than from the first injection port 21. For example, when the float 100 is placed approximately vertically on the water surface, the height of the tip of the penetration member 40 can be made different from the height of the first injection port 21, thereby allowing the height of the waves (water) entering the float 100 to be selected. In FIG. 2a, the infiltration member 40 is arranged along the side of the float, but it can also be arranged to penetrate the top of the float as shown in FIG. 2b. In the embodiment on the left side of FIG. 2b, the infiltration member 40 is installed by penetrating the float cup 15 at the top. In this arrangement, the infiltration member 40 located below the first injection port 21 is present in the hollow portion of the float 100. In the embodiment on the right side of FIG. 2b, the infiltration member 40 is connected via the first injection port 21 located next to the float cup 15. Even if one end of the infiltration member 40 is located deep inside the hollow portion of the float 100, as in the embodiment shown in FIG. 2b, that end is considered to be connected to the first injection port 21. The portion of the infiltration member 40 located outside the hollow portion is connected to the first injection port 21.

[0023] Figure 2c shows three embodiments of the float 100, each differing only in the length of the penetrating member 40. In these embodiments, the position of the first injection port is the same, but the position of the penetrating member inlet 45 is different, resulting in different wave heights penetrating into the hollow portion of the float 100.

[0024] <Example 2> FIG. 3a shows an example of a float 100 with two filler ports. The filler port located at the top is called the first filler port, and the filler port located at the bottom is called the second filler port. The height of the waves that penetrate the hollow portion can be selected depending on the position of the second filler port. Also, the buoyancy when water penetrates up to the first filler port can be adjusted depending on the position of the first filler port. This allows the float's floating behavior and water depth to be adjusted. Three or more inlets may be provided. In this case, the inlet closest to the top end 11 of the float 100 is called the first inlet, and the inlet closest to the bottom end 12 of the float 100 is called the second inlet. Even if there are three or more inlets, the position of the first inlet affects the buoyancy of the float 100 when it sinks, and the position of the second inlet determines the wave height at which the float begins to become submerged. To prevent water from entering through unused holes among the multiple inlets, each inlet can be provided with an opening and closing mechanism such as a lid or plug. A check valve can also be used for the inlets.

[0025] FIG. 3b shows an embodiment in which the first filler port 21 has a large hole size and the second filler port 22 has a small hole size. In this embodiment, because the second filler port is a small hole, water enters through the second filler port during relatively small waves, causing the float 100 to sink slowly. On the other hand, in the case of large waves, water also enters through the first filler port 21. Because the first filler port 21 is larger than the second filler port 22, the float 100 can sink quickly when large waves occur. When the first filler port 21 is close to the top as in FIG. 3b(2), a buoyancy means such as a slide float may be provided inside or outside the float 100 in case the float 100 sinks completely below the water surface.

[0026] FIG. 3c is an illustration showing the float 100 of this embodiment being placed in a body of water and gradually sinking below the water surface. FIG. 3c(1) shows the state in which no water has yet entered the hollow portion 10 of the float 100. FIG. 3c(2) shows the state in which a small amount of water has entered through the first fill port 21 or the second fill port 22, filling the hollow portion. The weight of this water reduces the buoyancy of the float 100, resulting in the buoyant object 30 sinking slightly. FIG. 3c(3) shows the state in which more water has entered, causing the buoyant object 30 to sink deeper. FIG. 3c(4) shows the state in which the float 100 is submerged up to the top end 11, and the hollow portion 10 is filled with water from the bottom end to the first fill port 21. Even under these conditions, the buoyant object 30 can be held in place in the water by the buoyancy of the air from the top end of the float 100 to the first fill port 21. In this way, the float 100 can be automatically and gradually lowered depending on the roughness of the waves on the water surface.

[0027] The four float 100 embodiments shown in Figure 3d differ only in the position of the second inlet 22. By adjusting the position of the second inlet 22 without changing the length of the float, it is possible to adjust the height of the waves that flood the float.

[0028] In the four embodiments of floats 100 shown in Figure 3e, the lengths of the first inlet and first end 11 (top end 11) are different. Each is filled with water up to the first inlet, and the space between the first inlet and the first end 11 is filled with air. The float 100 can add buoyancy to the buoyant object 30 mainly by using this air. By changing the length of the float 100 (the length of the hollow portion 10) and the position of the inlet, the water depth of the float after immersion can be adjusted.

[0029] <Example 3-1> Example 3-1 is an example in which a movable internal slide float is provided along the inner wall of the hollow portion of the float. The float 100 shown in FIG. 4A is characterized by having an internal sliding float 50 inside the hollow portion 10. When the hollow portion 10 is filled with air, the internal sliding float 50 is located at the bottom of the hollow portion 10 due to gravity. When water is supplied through the first inlet 21, water accumulates in the hollow portion 10, and the internal sliding float 50 rises from the bottom of the hollow portion 10 to the water surface due to buoyancy. The internal sliding float 50 is designed to move freely up and down within the hollow portion 10, and its position can be adjusted depending on the amount of accumulated water. Although not specifically shown, in an embodiment having multiple inlets, the internal sliding float 50 has the ability to adaptively change its position depending on the amount of water supplied from each inlet. The previously shown Fig. 1d(4), Fig. 1f(5), and Fig. 3b(2) are variations of this Example 3-1.

[0030] 4b shows the sinking of the float 100 and the movement of the internal slide float 50 when the float 100 of this embodiment is placed in rough waters. In this embodiment, the float 100 has a first inlet 21 at the tip, and the float cap 15 is open, so that water can enter the hollow portion 10 from the outside. Figure 4b(1) shows a state in which water has not yet entered the hollow portion 10 of the float 100. Figure 4b(2) shows a state in which high waves have caused water to enter the hollow portion 10 through the first inlet 21, causing water to accumulate inside the hollow portion 10, and the internal slide float 50 to rise to the surface of the accumulated water. Figure 4b(3) shows a state in which the tip of the float 100 is submerged and the hollow portion 10 is completely filled with water. The internal slide float 50 has risen to the top of the hollow portion due to buoyancy. 4c shows an embodiment that does not use the internal slide float 50. In this embodiment, the first injection port 21 is located at the tip (top end) of the hollow portion, so when the float 100 is completely submerged below the water surface and the hollow portion 10 is filled with water, it will no longer be able to provide buoyancy to the buoyant object 30. As a result, the float 100 and the load object 30 will sink to the seabed without any other buoyancy mechanism.

[0031] FIG. 4d shows five embodiments (1) to (5) of the float 100. For ease of comparison, all elements except the internal slide float 50 remain unchanged. In each embodiment, from (1) to (5), the size of the internal slide float 50 gradually decreases, and the buoyancy of the float 100 also decreases accordingly. Even when the hollow portion 10 is completely filled with water, the float 100 remains stably anchored in the water in embodiments (1) to (4). The specific position of the float 100 in the water can be adjusted depending on the size and other characteristics of the internal slide float 50. In embodiment (5), the buoyancy provided by the internal slide float 50 is insufficient, and the buoyant object 30 attached to the float 100 sinks to the seabed. 4d shows the hollow portion 10 completely filled with water to clearly show the difference in buoyancy depending on the size of the internal slide float 50. However, in cases where the injection port 21 is not submerged below the water surface, as in Examples (1) to (3), the upper part of the hollow portion 10 may not be filled with water and air may remain.

[0032] Figure 4e shows an embodiment of a float 100 that already has four filler ports, with some of the ports closed with plugs, and the topmost filler port is used as the first filler port 21. The closed filler ports 25 are indicated by black circles in the figure. If you want the float 100 to sink at a specific wave height, you can adjust the wave height at which the float sinks by removing the plugs of the filler ports above the desired wave height. Among the embodiments with four filler ports, the embodiment in which all filler ports are open (Figure 4e(4)) will sink the fastest.

[0033] <Example 3-2> In Example 3-2, an internal slide float 52 is arranged in the hollow portion 10 of the float, and this slide float is characterized by being connected by a cable or the like to any position within the hollow portion, such as the lower end of the hollow portion. This is different from the state in which the internal slide float 50 of Example 3-1 is not connected to anything by a cable, and prevents it from jumping out of the hollow portion of the float. In Example 3-2, since the internal slide float 52 is connected to a specific position by a cable, it is possible to adopt a design that intentionally jumps out of the hollow portion 10. This type of design can bring further versatility to the maneuverability of the float 10 in the sea.

[0034] FIG. 5a is an illustration showing a typical example of the float 100 in Example 3-2. The diagram illustrates the process of water gradually entering the hollow portion of the float 100 and the accompanying sinking of the float and the buoyant object 30. In this embodiment, the first injection port 21 is located at the top of the float, but the injection port 21 can also be located at any position on the side of the float. In Figure 5a (1), the hollow portion 10 is not yet filled with water and is filled with air. In Figure 5a (2), a small amount of water has entered, and the float 100 begins to sink depending on the amount of water. In Figure 5a (3), more water has entered the hollow portion 10, and the float 100 is sinking further. In Figure 5a (4), the hollow portion 10 is completely filled with water, and the internal sliding float 52 is positioned above the hollow portion 10 of the float 100 due to its buoyancy. The position of the buoyant object 30 in the water can be fine-tuned by adjusting the length of the float cable 53 connecting the internal sliding float 52 to the hollow portion.

[0035] 5b shows two embodiments with different lengths of the float cable 53, and by changing the length of this float cable 53, it is possible to control whether the internal slide float 52 remains in the hollow portion 10 or is released to the outside when the hollow portion 10 is filled with water. This makes it possible to stably moor the buoyant object 30 at a desired water depth. By using this mechanism, it is possible to adjust the behavior and position of the float 100 and the buoyant object 30 in the water, allowing for flexible use under specific conditions.

[0036] The internal sliding float 52 may have a structure in which two or more floats are connected together. In Fig. 5c, the internal sliding float 52 has a structure in which five floats are connected together, and this design has the advantage of improving the stability of the buoyant object 30 and making it less likely to sway. Such a structure is effective in stabilizing the buoyant object, especially when used in an environment susceptible to the effects of waves.

[0037] In the embodiment shown in Fig. 5d(1), the lower part of the internal sliding float 52 and the upper inner wall of the hollow part 10 are provided with thread crests and valleys that interlock with each other (it does not matter which is the crest / valley). With this structure, when water enters the hollow part 10, the internal sliding float 52 is designed to rotate and rise due to the vibration of the waves. When the waves become even stronger, the internal sliding float 52 separates from the hollow part, as a result of which the sinking of the buoyant object 30 is promoted. On the other hand, Fig. 5d(2) shows an embodiment of the internal sliding float 50 that does not use a float cable 53. These embodiments are designed to further enhance the functionality of the float 100 and optimize its performance in specific marine environments.

[0038] Example 4 Example 4 is an example in which a movable external slide float 54 is provided along the outer wall of the hollow portion 10 of the float 100. The external slide float 54 can move up and down along the outer wall of the hollow portion. An example is shown in FIG. 6a. The external slide float 54 is designed to always be located near the water surface due to its buoyancy. As a result, when water enters the hollow portion 10 of the float 100, the external slide float 54 tries to move upward relative to the hollow portion. However, this upward movement is limited by the upper float stopper 56, and if that limit is exceeded, the external slide float 54 will sink into the water together with the hollow portion 10. A lower float stopper 57 may be provided to prevent the external slide float 54 from falling out from below the hollow portion. The shapes of the upper slide stopper 56 and the lower float stopper 57 are not limited to the doughnut shape shown in Figure 6a. They may have any shape as long as they can limit the range of movement of the external slide float 54. They may also be formed integrally with the outer wall of the hollow portion.

[0039] FIG. 6b is an illustration showing the state when the float 100 of the fourth embodiment is placed in a water area. 6b(1), the bottom end of the hollow portion 10 is slightly filled with water, and the float 100 is slightly submerged. At this time, the external slide float 54 is located near the water surface and is not directly contributing to the provision of buoyancy to the buoyant object 30. In FIG. 6b(2), most of the hollow portion 10 is filled with water, and the upward movement of the external slide float 54 is restricted by the upper float stopper 56, so that the external slide float 54 and the hollow portion 10 are slightly submerged below the water surface. In Figure 6b(3), a heavier buoyant object 30 is suspended from the situation in Figure 6b(2), the float 100 is completely submerged below the water surface, and the hollow portion 10 is filled with water. In this state, it is shown that the float 100 is stably moored in the water by the action of the external slide float 54.

[0040] The position of the upper float stopper 56 can be adjusted as desired by the user. For example, in the embodiment of Fig. 6c, the position of the upper float stopper 56 is set lower than that of Fig. 6b. By adjusting the position of this upper float stopper 56, it is possible to fine-tune the water depth that the buoyant object 30 reaches when the float 100 sinks below the water surface.

[0041] In the embodiment shown in FIG. 6d, the external slide float 54 has an inverted truncated cone shape, and its upward movement is restricted by contact between the lower end of the external slide float 54 and the upper float stopper 56.

[0042] In the embodiment of FIG. 6e, the upper float stopper 56 is omitted, and the external slide float 54 is designed to easily come off the hollow portion of the float 100. Instead, the external slide float 54 is connected to the hollow portion 10 by a float cable 53. With this configuration, when the hollow portion 10 is filled with water and the float 100 sinks, the external slide float 54 separates from the hollow portion and rises to the water surface. By adjusting the length of the float cable 53, it is possible to adjust the position of the buoyant object 30 in the water. Furthermore, by adjusting the buoyancy of the external slide float 54 according to the weight of the float 100 and the buoyant object 30, it is also possible to set the external slide float 54 to sink below the water surface.

[0043] The external slide float 54 may be made up of two or more floats. The external slide float 54 of the container-type float 100 in Fig. 6f is made up of two floats. The external slide float 54 of the container-type float 100 in Fig. 6g is made up of three floats.

[0044] Various variations of the present invention are shown in the fifth embodiment, and these variations are also applicable to the other embodiments. <Example 5-1> Figure 7a shows an embodiment in which a plurality of connection points 35 with a buoyant object are provided. In Figure 7a(1), second ends 12 are arranged at the bottom end and side of the float, and each of them is provided with a connection point 35 with a buoyant object. Figure 7a(2) shows that four connection points 35 with a buoyant object are provided upward from the second end 12. On the other hand, in Figure 7a(3), the bottom of the float 100 is bent, and second ends 12 are arranged at the bottom end and side, and each of them is provided with a connection point 35 with a buoyant object. In wave conditions that do not exceed the buoyancy force, changing the attachment position of the cargo can change the movement of the buoyant body, thereby reducing the swaying transmitted to the cargo. In this way, adjusting the attachment position of the cargo can effectively control swaying.

[0045] <Example 5-2> The container-type float of the present invention is not limited to a cylindrical shape, and various shapes can be adopted. Figure 7b(1) shows a cylindrical container-type float that was also introduced in the above-mentioned embodiment. Figure 7b(2) has a shape with a slightly bulging center. Figure 7b(3) shows a shape that is wider than Figure 7b(1). Figure 7b(4) has a shape that is close to a sphere. Figure 7b(5) is cylindrical, but has a slightly rounded lower part. The float cap 15 is designed to allow water to enter from the outside, and the top end of the float forms the first inlet 21. All of the container-type floats shown in Figure 7b use internal slide floats 50, demonstrating the diversity of container shapes. These shapes can also be applied to other embodiments, such as Example 1 and Example 2. The floats shown in Figure 7b are arranged from left to right in order of least susceptible to wave impact and least susceptible to shaking of the float or buoyant object (load). This means that the shape of the float directly affects its stability against waves and its resistance to the shaking of the buoyant object. Also, the larger the buoyant object 30 in Figure 7b, the faster the float 100 will be submerged in seawater.

[0046] Figure 7c is an illustration of the container-type float viewed from above (from the first end 11 side), and it is not limited to a circle; polygons such as an oval, triangle, square, pentagon, hexagon, octagon, and decagon may also be used. Shapes with rounded corners are also acceptable. Furthermore, although not shown, asymmetric and irregular shapes are also possible.

[0047] <Example 5-3> Fig. 7d shows an embodiment in which the second end 12 has a wide design, and the connection point 35 with the buoyant object also has a correspondingly wide structure. This design is particularly suitable for application to a buoyant object 30 such as an aquaculture cage. Fig. 7d(1) shows the hollow portion 10 in a state where water has not yet been poured into it. Fig. 7d(2) shows the hollow portion 10 in a state where it is filled with water. Note that although the container-type float shown in Fig. 7d uses an internal slide float 50, it can also be applied to other embodiments such as Example 1 and Example 2. The embodiment shown in Figures 7e and 7f is a three-dimensional representation of a container-type float 100. In the embodiment shown in Figure 7f, seawater enters through the first inlet 21, and the float is submerged further in water than in the embodiment shown in Figure 7e. Although a cage is shown as the buoyant object 31, this is not limited to a cage. The shape of the buoyant object 31 is not limited to a cylinder, hemisphere, or rectangle as shown in Figures 7e and 7f, and various other shapes can be used.

[0048] <Example 5-4> The embodiment shown in Figure 7g uses two container-type floats (a first float and a second float) in conjunction with one another. In this configuration, the floats are connected to each other through a hollow bottom portion 10c that connects the bottoms of the floats. When water is injected through the first inlet 21a or the first inlet 21b, the water flows into the hollow portions 10 in both floats via the hollow bottom portion 10c. On the right side of Figure 7g is an illustration showing this embodiment installed on the sea surface. The container-type float shown in FIG. 7g uses the internal slide float 50, but it can also be applied to other embodiments such as the first and second embodiments. That is, Figure 7g shows a container-type float system having a first float and a second float, in which the hollow portion 10 of the first float and the hollow portion 10 of the second float are connected via a bottom hollow portion 10c located at the bottom of both floats.

[0049] Examples of applications using the above-described first to fifth embodiments are shown below. <Application example 1> Application example 1, in which the container-type float 100 of the present invention is applied to a longline 58, is shown in Figures 8 and 9. In this application example, the aquaculture cages 31 and the aquaculture cables 58 connecting the aquaculture cages 31 correspond to the buoyant object of the present invention. Figure 8a shows the culture cage 31 positioned roughly near the water surface when the water surface is calm. Figures 8b to 8e are illustrations showing how water enters the float 100 during rough seas, causing the culture target 30 to automatically sink into the water. Figures 9a to 9c show how the float 100 gradually sinks. Note that the numerical values ​​for distances shown in Figure 9a are approximate distances between the sea surface and the second inlet 22. These are examples for reference, and the present invention is not limited to these numerical ranges. In Figure 9a, floats 100 provide buoyancy to the aquaculture cages 31 and the aquaculture cables connecting the cages. Here, floats 100 equipped with a first injection port 21 and a second injection port 22 are used, and when the floats 100 are lined up in a row, the distance from the bottom of the hollow portion 10 to the second injection port varies slightly. In particular, float 100 number 7 in Figure 9a sinks first because it is the shortest distance from the sea surface to the second injection port. After float 7 sinks, float 6 sinks next, followed by floats 5, 4, and 3, and so on, in a chain reaction. This allows the numerous aquaculture cages 31 connected to the aquaculture cables to sink in an orderly manner. Also, by manually sinking float number 7 100, the other adjacent floats can be successively sunk. The examples shown in Figures 8f and 8g are examples in which the container-type float 100 introduced in Example 5-3 is applied to a longline 58. In the example shown in Figure 7f, seawater enters through the first injection port 21, and the example is submerged further underwater than the example shown in Figure 8f.

[0050] That is, Figures 9a to 9c show a container-type float system having a first float 100, a second float 100 and a third float 100, in which the containers of each float are approximately the same shape, the distance between the first end 10 and the first injection port 21 of each float is approximately the same, the distance between the first end 11 and the second injection port 22 of the first float 100 is greater than the distance between the first end 11 and the second injection port 22 of the second float 100, and the distance between the first end 11 and the second injection port 22 of the second float 100 is greater than the distance between the first end 11 and the second injection port 22 of the third float 100. For example, in Figure 9c, the container-type float 100 shown as number 7 is arranged as the first float, number 6 as the second float, and number 5 as the third float. The second float is located between the first and third floats. In the illustration, the containers of these floats have approximately the same shape, but this is not necessarily limited to approximately the same shape.

[0051] The embodiment shown in FIG. 9d is an example in which the float 100 in the embodiment shown in FIG. 9a has only the first injection port 21 as an injection port. That is, Figure 9d shows a container-type float system having a first float 100 and a second float 100, in which the distance 21 between the first end 11 of the first float 100 and the first inlet is greater than the distance between the first end 11 of the second float 100 and the first inlet 21. For example, in Figure 9d, the seventh container-type float 100 is the first float, and the sixth float is the second float. Alternatively, the sixth container-type float 100 may be the first float, and the fifth float may be the second float 100. In the illustration, the containers of these floats have approximately the same shape, but this is not necessarily limited to approximately the same shape.

[0052] Similarly, Figure 9d shows a container-type float system having a first float, a second float and a third float, in which the distance 21 between the first end 11 of the first float 100 and the first inlet is greater than the distance between the first end 11 of the second float 100 and the first inlet 21, and the distance between the first end 11 of the second float 100 and the first inlet 21 is greater than the distance between the first end 11 of the second float 100 and the first inlet 21. For example, in Figure 9a, the container-type float 100 shown as number 7 is arranged as the first float, number 6 as the second float, and number 5 as the third float. The second float is located between the first and third floats. In the illustration, the containers of these floats have approximately the same shape, but this is not necessarily limited to approximately the same shape. Furthermore, Figure 9e shows an example in which the container-type float 100 introduced in Example 3-1 and Figure 4b, which has an injection port 21 at the top of the float, is applied to a longline 58. Here, the longline 58 corresponds to the buoyant object of the present invention. The cover of the injection port 21 is removed when the float 100 is in use.

[0053] <Application example 2> Application example 2, in which the container-type float 100 of the present invention is applied to a fish farming raft, is shown in Figures 10a and 10b. In this application example, the fish farming raft corresponds to the buoyant object of the present invention. The number of floats 100 is not limited to four, and can be set to any number. Not only the float 100 of Example 1, but also the floats 100 of other Examples can be applied. Figure 10c shows an example in which the container-type float 100 introduced in Example 3-1 and Figure 4b is applied to a fish farming raft. The hollow part 10 of the container-type float can be attached to a standing net or sheet.

[0054] <Application example 3> Application example 3, in which the container-type float 100 of the present invention is applied to an aquaculture cage, is shown in Figures 11a to 11d. In this application example, the aquaculture cage corresponds to the buoyant object of the present invention. In Figure 11a(1), the float 100 is installed on the top surface of the aquaculture cage, and when the waves are calm, the first injection port 21 is closed with a plug. In preparation for rough water, the float 100 is set upright with the first injection port 21 open, as shown in Figure 11a(2). When the waves become rough, the float 100 sinks below the water surface as shown in Figure 11a(3), allowing the aquaculture cage to safely evacuate below the water surface. An internal slide float 50 may be used as shown in Figure 11b. A pair of floats 100 may be used in one culture cage 31 as shown in Figure 11c. Figure 11d shows an application example in which two container-type floats 100 are connected (see Example 5-4), and in this way the floats 100 can be arranged in various positions in the culture cage 31. The shape of the float 100 is not limited to a cylindrical shape and can also be a shape as shown in Figure 7d. Not only the float 100 of the first embodiment but also the floats 100 of other embodiments can be applied.

[0055] <Application Example 4> Application Example 4 is shown in Figure 12. In this application example, an aquaculture cage corresponds to the buoyant object of the present invention. Figure 12a shows that a float 100 is arranged so as to penetrate near the center of the aquaculture cage when viewed from above. Figure 12b illustrates an embodiment in which aquaculture cages 31 arranged in this manner are connected by a cable. In the upper part of Figure 12b, the float 100 is filled with air, so that the aquaculture cage 31 is located near the water surface. On the other hand, in the middle part of Figure 12b, the hollow portion 10 of the float 100 is filled with water, so that the aquaculture cage 31 sinks below the water surface. The lower part of Figure 12b is an illustration from a top view. Not only the float 100 of Example 1, but also floats 100 of other examples can be applied. Furthermore, the container-type float 100 of the present invention can be applied not only to aquaculture cages but also to aquaculture rafts, fishing reefs, breeding reefs, and garbage collection rafts.

[0056] <Application example 5> Application example 5, in which the container-type float 100 of the present invention is applied to a pier, is shown in Figure 13. In this application example, the pier corresponds to the buoyant object of the present invention. Figure 13a is an illustration seen from above, and Figure 13b is an illustration seen from the side. In this application example, the float 100 adds buoyancy to the pier. In this illustration, 14 floats 100 are arranged on each side of the pier. These floats 100 are connected to each other at the bottom of their hollow spaces, and when looking at a particular float, it is clear that its structure is shared with the other floats. In particular, as shown in Figure 13b, the three floats located on the far right are provided with second inlets 22. These inlets are located in different positions for each float, and the second inlet 22 of the rightmost float is located at the lowest position, allowing water to enter more easily than the other floats 100. Figures 13b(2) and 13b(3) show how this arrangement causes the floats on the far right to gradually sink. The first inlet 21 and second inlet 22 can also be check valves to prevent water from escaping from the hollow spaces. This application example can be applied not only to the float 100 of Example 1 but also to the floats 100 of other Examples. Also, the number of floats 100 is not limited to the example in this illustration, and various numbers can be set.

[0057] 13c to 13f show a further application example 5 in which the container-type float 100 of the present invention is applied to a pier. In this example, the floats 100 are placed at the four corners of the pier, and the positions of the first injection ports installed on each float 100 are arranged in ascending order, representing the gradual sinking of the pier.

[0058] FIG. 13g is a three-dimensional illustration of an embodiment in which floats 100 are arranged at the four corners of a pier or aquaculture raft (a buoyant object 30). The container-type float 100 of the present invention can be applied not only to piers but also to aquaculture rafts, frame rafts, fish cages, etc.

[0059] <Application Example 6> Application Example 6, in which the container-type float 100 of the present invention is applied to a pollution prevention membrane, is shown in Figure 14. In this application example, the pollution prevention membrane corresponds to the buoyant object of the present invention. The float 100 is used to float the pollution prevention membrane on the water surface, and plays a role in preventing the diffusion of pollutants. Furthermore, the container-type float 100 of the present invention can be applied not only to anti-pollution membranes but also to sheets and fences, as well as to fishing gear and fishing reefs, tide-changing fences, garbage-catching fences, sand-prevention fences, wave-break fences, and scour-prevention fences, etc.

[0060] <Application Example 7> Figure 14 shows examples of applications of the container-type float 100 of the present invention to various water fences. The fences mentioned here include various fences used in water areas, such as safety fences for swimming beaches, fences to prevent sharks from entering, and fences to keep jellyfish out. Such fences are suitable for use at swimming beaches and in port civil engineering works. In particular, they have the function of automatically sinking during bad weather, allowing the fence to remain in place for a period of time.

[0061] <More variation examples> In the embodiments described so far, the first injection port 21 has been provided in one location. The first injection port 21 may be provided in two or more locations as long as the distance from the first end 11 is the same, as shown in Figures 16a to 16d. In Figures 16a to 16b, the first injection port 21 is provided in two locations. In Figure 16c, the first injection port 21 is provided in three locations. In Figure 16d, the first injection port 21 is provided in four locations. The same applies to the second inlet 22.

[0062] Figure 16e shows different shapes of the connection point 35 with the buoyant object. Specifically, in Figure 16e(1), the connection point 35 is expressed as a hole. In Figure 16e(2), the connection point 35 is depicted as a groove provided on the container, and in Figure 16e(3), the connection point 35 is depicted as a protrusion provided on the container. The connection point with the buoyant object is not limited to being strictly point-like, and includes various shapes.

[0063] The length of the float and the length of the hollow portion of the float may be any length as long as it can impart a predetermined buoyancy to the object to be buoyed. The size and shape of the inlet may be any as long as it allows water to enter from the outside. As mentioned above, there may be any number of inlets, as long as they are one or more. The first injection port does not have to be located on the side of the float, but can also be located on the top (top end). Whether the first injection port at the top end is open or closed, the buoyancy of the float itself will be roughly the same as long as water does not enter the hollow part from the outside.

[0064] FIG. 17 shows an example of an actual photograph of the container-type float 100 of the present invention. The float in FIG. 17 a corresponds to Example 1, and the first injection port 21 is provided at a position slightly away from the first end 11 . 17b has four injection ports on the side surface. The port closest to the first end 11 is the first injection port 21, and the port furthest from it is the second injection port 22. The float of Figure 17c has a first inlet 21 and a second inlet, the size of the hole in the second inlet being smaller than the size of the hole in the first inlet. The float in FIG. 17d is provided with a first inlet 21 at the first end (top end). The float in FIG. 17e is provided with a first inlet 21 near the first end (top end).

[0065] Example 6 18a, 18b, 19a and 19b show an example of a floating-sinking vessel type float 200 that uses the principles of the vessel type floats shown above. In the container-type float 100 shown so far, a buoyant object to which buoyancy is added can be connected to the second end of the float 100. In the container-type float system 200, a hollow pipe 210 is connected to the side of the hollow portion 10, and multiple culture cages 31 (buoyant objects) are connected to the hollow pipe 210. The hollow pipe 210 is hollow, and buoyancy can be added to the culture cages 31 by filling the pipe with air. The hollow pipe 210 in Figures 18a and 19a is filled with air, and the culture cages 31 are placed near the sea surface. As shown in Figure 19a, another float 260 may be provided to the hollow pipe 210 or the culture cages 31. The container-type float system 200 has a first inlet 21 at its top. When the container-type float system 200 is placed on the water surface, water will enter through the first inlet 21 during rough seas and the like, causing the container-type float system 200 (the container portion having the hollow portion 10) to sink in water according to the amount of water that enters. 18a and 18b, the injection port 220 of the hollow pipe 210 is disposed outside the hollow portion 10. When the hollow portion 10 sinks as shown in Fig. 18b, the injection port 220 of the hollow pipe 210 also sinks to the water surface, and the hollow pipe 210 fills with water. As the buoyancy of the hollow pipe 210 weakens, the culture cage 31 also sinks deeper. 19a and 19b, the hollow pipe inlet 220 is connected to the inside of the hollow section 10. When the inside of the hollow section 10 is filled with water, the water enters the hollow pipe 210 through the hollow pipe inlet 220, causing the culture cages 31 to sink. 18a and 18b are arranged on the side of the hollow portion 10, and a hollow pipe 210 is provided between them. The hollow pipe 210 may not be fixed to the side of the hollow portion 10, but may be movable between the upper float stopper 256 and the lower float stopper 257. The float weight 205 and the external float 255 are used to balance the overall buoyancy. These components may be substituted with other components or may not be present at all. The hollow pipe 210 corresponds to a longline in an aquaculture system using cages, etc. Any hollow pipe may be used as the hollow pipe 210 as long as it is a hollow pipe. A pump may be separately provided to control the flow of air or water in and out of the hollow pipe.

[0066] Example 6 can be generally stated as follows. In a container-type float system using a container-type float having a hollow portion for storing air inside, The container-type float has a first end and a second end opposite to the first end, the first end has a first inlet; A buoyant object is connected to the hollow portion via a hollow pipe. A container-type float system in which the buoyancy applied to the buoyant object varies depending on the amount of water that enters through the first inlet when the container-type float is placed in a water area.

[0067] The illustrations in the drawings shown so far are merely schematic illustrations, and the scale of the dimensions of the actual structure does not necessarily match the scale of the drawings. Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, as well as within the scope of the invention described in the claims and their equivalents.

Claims

1. In a container-type float having a hollow portion for storing air inside, a first end and a second end opposite the first end; a buoyant object to which buoyancy is applied can be connected to the second end, the hollow portion has a first inlet; A container-type float in which, when placed in a body of water, the buoyancy applied to the buoyant object varies depending on the amount of water that enters through the first inlet.

2. 2. The container-type float according to claim 1, wherein the first inlet is provided between the first end and the second end.

3. 2. A container-type float as described in claim 1, wherein when the first inlet is submerged below the water surface and the space between the first inlet and the second end of the hollow portion is filled with water, the air between the first end and the first inlet becomes the main source of buoyancy.

4. 2. The container-type float according to claim 1, further comprising a slide float movable along the inner wall or outer wall of the hollow portion.

5. 5. The container-type float according to claim 4, wherein the slide float changes its position depending on the amount of water that has entered through the first inlet.

6. 2. A container-type float as described in claim 1, wherein when the first end is submerged below the water surface, a slide float movable along the inner wall of the hollow portion moves from the first end to the outside of the container.

7. 2. The container-type float according to claim 1, wherein the volume of the hollow portion from the first end to the upper end of the first injection port is 10% to 60% of the volume of the hollow portion.

8. 2. The container-type float according to claim 1, further comprising an intrusion member, one end of said intrusion member being connected to said first inlet and the other end of said intrusion member being located above said first inlet.

9. 2. The container-type float of claim 1, further comprising a second inlet between the first inlet and the second end.

10. 2. The vessel-type float of claim 1, further comprising a weight near said second end.

11. 2. The container-type float according to claim 1, wherein the buoyant object is a cable, a container, an aquaculture raft, a pier, a pollution prevention membrane, a fence, a weight, or a fishing gear.

12. In a container-type float system having a first float and a second float, A container-type float system in which the first float and the second float are any of the container-type floats described in any one of claims 1 to 11, and the hollow portion of the first float and the hollow portion of the second float are connected via a bottom hollow portion located at the bottom of both floats.

13. In a container-type float system having a first float and a second float, The first float and the second float are any of the container-type floats described in any one of claims 1 to 11, A container-type float system in which the distance between the first end of the first float and the first inlet is greater than the distance between the first end of the second float and the first inlet.

14. A container-type float system including a first float, a second float, and a third float, The first float, the second float, and the third float are any of the container-type floats described in any one of claims 1 to 11, the second float is disposed between the first float and the third float; a distance between the first end of the first float and the first inlet is greater than a distance between the first end of the second float and the first inlet; The distance between the first end of the second float and the first inlet is greater than the distance between the first end of the third float and the first inlet; Container-type float system.

15. A container-type float system including a first float, a second float, and a third float, The first float, the second float, and the third float are floats according to claim 9, The second float is disposed between the first float and the third float. the law of nature, the distance between the first end of each float and the first inlet is approximately the same; a distance between the first end of the first float and the second inlet is greater than a distance between the first end of the second float and the second inlet; The distance between the first end of the second float and the second inlet is greater than the distance between the first end of the third float and the second inlet; Container-type float system.

16. In a container-type float system using a container-type float having a hollow portion for storing air inside, The container-type float has a first end and a second end opposite to the first end, the first end has a first inlet; A buoyant object is connected to the hollow portion via a hollow pipe. A container-type float system in which the buoyancy applied to the buoyant object varies depending on the amount of water that enters through the first inlet when the container-type float is placed in a water area.

Images