Underwater fish cage with elastic ropes
Elastic ropes submerged aquaculture cages address material damage, sunlight exposure, and operational costs by acting as shock absorbers, enhancing fish protection and safety while maintaining oxygen levels and reducing personnel risks.
Patent Information
- Application Number
- PCT/TR2025/050433
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-05-01
- Publication Date
- 2025-11-20
AI Technical Summary
Current aquaculture cage systems face issues such as material damage from strong winds and waves, fish exposure to sunlight and predators, and high operational costs due to submersion requirements, leading to stock loss and safety risks for personnel.
The use of elastic ropes (Bungee ropes) to suspend fish and mussel farming cages underwater, acting as shock absorbers to minimize wave impact and eliminate the need for bird nets, while reducing operational costs and enhancing safety.
The system effectively dampens wave forces, protects fish from sunlight and predators, maintains oxygen levels, and reduces operational costs by minimizing material damage and personnel risks, ensuring stable fish cultivation.
Smart Images

Figure TR2025050433_20112025_PF_FP_ABST
Abstract
Description
[0001] UNDERWATER FISH CAGE WITH ELASTIC ROPES
[0002] Technical Field
[0003] The invention relates to an underwater fish cage with elastic ropes in which fish farming cages and mussel farming systems are suspended and submerged by elastic ropes in seas and lakes.
[0004] The invention subject to the patent is the use of floating fish cages used in fish farming in seas and lakes, by covering the top of the nets with a net, tying them with elastic ropes at 2-meter intervals along the floating cage pipes and suspending them 3-5 meters under water. The elastic ropes (Bungee rope) will act as shock absorbers between the floating cage pipes on the surface and the submerged covered fish net. Due to the laws of physics, most of the effect of wave motions on the water surface gradually decreases from the surface and fades at a depth of approximately twice the wavelength. The covered cage net suspended to that depth and the fish inside it will not be affected by the floating pipes that will move according to the rhythm of the waves on the water surface, thanks to the elastic ropes in between. Wave forces will thus be dampened, and the physical effects of the weight and friction forces created by the cage net on the cage pipes will be minimized.
[0005] State of the Art
[0006] The consumption of fish, mussels, algae (seaweed) and other aquatic and marine organisms, which we generally call aquatic products, and which live in natural waters such as oceans, seas, lakes, dam lakes and rivers, as food and their use in industrial areas is increasing day by day. Natural stocks are not sufficient to meet the increasing consumption needs. The need for industrial production has arisen due to reasons such as weather conditions, hunting bans during the reproduction periods of these organisms, determination of stocks using advanced technologies in hunting, and the decrease in natural stocks as a result of wrong and illegal hunting. Aquaculture is the reproduction, raising, harvesting and marketing of all marine and aquatic organisms in controlled areas isolated in their natural habitats such as seas, lakes-ponds, rivers or in terrestrial areas by creating pools.
[0007] Aquaculture is used to meet the increasing demand in a way that will least affect the natural aquatic ecosystem, instead of overfishing practices that disrupt the balance of marine life and threaten the natural ecosystem.
[0008] For aquaculture, it is necessary to create cultivation areas first. Areas created by enclosing a section in seas, lakes, ponds and rivers are the most natural areas. Pools and tanks are used in terrestrial production. Floating cage systems are used for fish in seas, lakes and dam lakes, and net bags and tassel ropes suspended from ropes supported by buoys are used for bivalves and algae. In this way, the produced organism can be housed, fed and cared for in a certain area in a controlled manner.
[0009] In the cages used in aquaculture, there are bags made of nets suspended from HDPE (high density polyethylene) pipes that provide buoyancy. There are cage systems in different geometric shapes. The majority of cages used in the industry are circular and have a diameter of 20-50 meters. Net bag depths are generally 12-25 meters. Floating pipes are used as single, double or triple, and the pipes are fixed to each other with plastic or metal clamps called brackets at intervals of approximately two meters to form a circular shape. In open water farming, cages and other floating systems are fixed by connecting them to the “mooring system” anchored to the water bottom with all its elements made of HDPE pipes in order to protect them from the movements of waves, winds and currents. The cylindrical shape of the net, which is suspended from the floatation pipes, is maintained by the weight ropes and weights attached to the floatation pipes, which are suspended from the outer edge of the net. Weights can be attached to each rope individually, or they can be used as a single piece in the form of weight pipes filled with metal cables. A bird net is placed on top of the cage to prevent the fish from jumping out and to protect the fish from predators such as birds. This net, called a bird protection net, is kept from sinking into the water by a floating stand placed in the center of the pool. The bird net is stretched over the cage by attaching it to the uprights on the floating pipes from the edges. In the cultivation of mussels and seaweed, long-line rope systems anchored to the sea bottom using floating buoys are used. These cultivated organisms are allowed to live and reproduce by clinging to the bag net or tassel ropes hung on the ropes. The growing and maintenance processes are carried out on the ropes suspended by buoys.
[0010] Floating cage systems currently in use pose risks in terms of aquaculture conditions. Due to strong winds and waves, currents or ice caused by bad weather conditions, material damages such as unraveling or breaking of sling ropes connected to the mooring (anchoring system), breaking of cage brackets, breaking or bending of cage pipes, unraveling or breaking of ropes connecting the cage net to the float pipes, unraveling or breaking of weight ropes, tearing or dismantling of cage nets occur and as a result of these damages, great losses can be experienced as valuable fish stocks escape into the sea. For example, assuming that there are approximately 300 tons of fish in a cage with a diameter of 40 meters, if all the fish in that cage were to be lost, the material damage would be over 1-1 .5 million USD. Similar risks arise from the wearing out or tearing of bird nets, which are placed on the cage like a lid to protect against predatory birds, or the loss of function of the bird net stand due to deformation or breakage. In the current systems, fish stocks are in constant contact with the water surface and due to this “phase”, which is rarely found by nature, they are exposed to sunlight directly, which can cause color deformations, darkening and sunburns and trigger skin diseases, decrease in market value due to color deformation and darkening (for example; red fish like coral), exposure to predatory bird attacks when they come to the surface, and fish escaping from the surface in extremely wavy weather (depending on the fish species). Especially hungry fish spend long periods of time on the surface and during feeding (automatically or manually) the entire stock competes on the surface. Competition between fish during feeding can cause scale losses and injuries. It is frequently experienced that the first few meters of the cage net close to the surface are covered with algae (biofouling) due to intense light, which reduces water permeability and therefore reduces circulation and oxygen levels inside the cage, increases the weight load of the nets as a result of algae growth and puts extra load on the floating cage pipes, and the increased net weight makes other manipulations such as changing the net and applying pesticides difficult or even impossible. During rainy weather, fish near the water surface become stressed due to lightning during the night, and major problems such as deaths due to compression at the bottom of the net and stock losses due to triggering diseases occur. During the day and night, fish stocks approach the surface depending on their species, and even prefer surface water during the daytime because of competition between them when feeding is done from the surface. Fish stocks that are accustomed to swimming close to the surface become more easily observed and accessible to those with bad intentions. The relatively unprotected stocks in the open sea are exposed to fish theft and sabotage by nets thrown into the cage from the surface. Unfortunately, such thefts can occur all over the world. During a storm, personnel responsible for system security are forced to take risks and go out to sea for control despite bad weather conditions. Instant interventions are required for broken ropes and broken pipes, which increases the risk of accidents and life safety for personnel.
[0011] One of the most effective methods to protect the stock from these effects listed above would be to submerge the cage system or cage nets under into water. However, this process requires high technology, intensive labor, high investment and working capital in current designs and trials. Many attempts are being carried out in other producing countries and various models have been developed for this purpose. However, the additional costs and operational difficulties brought by the cage immersion process have not found sufficient response in the market and have not yet become widespread.
[0012] Current submerging cage designs and applications in use or in pilot phases around the world present various operational challenges. The majority of cage systems, which can be submerged or completely submerged at any time in various designs, require high investment costs. Some of the submerging cage systems pump water into the buoyancy pipes of the cages to survive storms and waves, thus submerging all cage pipes and uprights under water. In this design, since the buoyancy pipes of the cages are filled with water, it is necessary to use high capacity buoys in addition to standard mooring buoys. The submerging and surfacing processes require the involvement of divers and equipped operation boats. Some other immersed cage designs are very costly and contain steel and similar reinforced structural elements, thus carryingthe risk of accidental sinking due to their weight and requiring high tonnage operating vessels. As a result, the need for an underwater cage system (Bungee FishCage) suspended by elastic ropes, which eliminates the disadvantages of the current designs beingtested and in use and can be easily adapted to the standard cages with single, double or triple pipes of different diameters currently in use, has made the development in the current technical field necessary.
[0013] Brief Description of the Invention
[0014] The present invention relates to the use of floating cage systems that meet the above- mentioned requirements, minimize the mentioned disadvantages and provide some additional advantages by suspending the nets to the cage pipe with elastic ropes and submerging them under water. For similar purposes, it concerns the suspension of cultivation ropes or bags of mussel species and seaweed cultivation systems with elastic ropes.
[0015] The purpose of the invention is to provide solutions to all the problems in the known state of the art such as predatory birds on the surface, strong surface water movements, security risks, high cost and difficulty level, by completely submerging the net containing fish or the suspended mussel system in water thanks to the added elastic ropes, which can be easily adapted to the floating cage and mussel farming systems in use around the world, based on the known state of the art.
[0016] The main purpose of the invention is to ensure that all kinds of irregularities and pressure in physical tensions are absorbed and minimized thanks to the shock absorber function provided by elastic ropes between the floating cage pipes and the net cage to which the weight ropes are attached, and thus to prevent major damages such as cage breakage, rope unraveling and ruptures, stock losses due to net tears.
[0017] Another purpose of the invention is to eliminate the need for a bird net and therefore a bird net stand by completely immersing the covered cage net suspended by elastic ropes into water.
[0018] Another purpose of the invention is to reduce the negative effects of day-night water temperature differences and intense light on the surface by immersing the systems. Another purpose of the invention is to prevent damage to the cage pipes and fishing nets exposed to the wave crests and troughs that occur due to regular and irregular sinusoidal wave movements in stormy and wavy weather, by means of elastic ropes that act as shock absorbers. In the standard equipment in use, the floating cage pipes and the fishing net connected to the pipes move together and the main resistance is the load of the friction force of the net created during the upward movement of the net at the time of wave rise. The cage pipes on the surface used in the invention, which carry all the weight, move independently of the suspended fish cage depending on the horizontal and vertical effects of wave movements, and thus feel the frictional load of the cage net at a minimum level. At the depth to which the fishing net is suspended (approximately twice the maximum wave height), it imposes a load equal to its own weight on the floating pipes and remains at a constant depth. Elastic ropes absorb regular and irregular wave movements on the surface by acting as shock absorbers.
[0019] Another purpose of the invention is to prevent the fish from being affected by direct sunlight by lowering the net of the submerged fish cage to a depth of approximately twice the wave height, thus preventing the formation of color deformations, darkening and sunburns and the triggering of skin diseases.
[0020] Another purpose of the invention is to ensure that the market value of the stock is preserved in this respect by reducing the color deformation and darkening of the fish.
[0021] Another purpose of the invention is to prevent fish from being exposed to predatory bird attacks by preventing them from coming to the surface.
[0022] Another purpose of the invention is to enable fish to be fed in their natural habitat by feeding them underwater (automatic feeding by pumping water).
[0023] Another purpose of the invention is to prevent fish from escaping from the surface in extremely wavy seas by keeping the cage underwater.
[0024] Another purpose of the invention is to prevent biofouling on the nets to a great extent by greatly reducing the higher light effect on the surface and to ensure that the water permeability of the nets is less affected and the oxygen level in the water is better preserved. Another purpose of the invention is to prevent the increase in the weight of the nets and the problem of extra load on the floating cage pipes by eliminating the problem of increasing the weight of the nets and preventing other manipulations such as changing the net and spraying from becoming difficult, thanks to the decrease in algae.
[0025] Another purpose of the invention is to ensure that the fish are less affected by sudden light stress caused by lightning by keeping the cage under water and shading it with the cover net.
[0026] Another purpose of the invention is to ensure that the stocks that remain unprotected in the open sea during the night are protected from theft attempts by cutting off the contact of the cage net with the surface, and to prevent the loss of goods that may occur through theft to a great extent.
[0027] Another purpose of the invention is to reduce the necessity of the personnel responsible for the system safety to go out to sea for control despite difficult weather conditions during a storm, thanks to the fact that the system submerged with elastic ropes is safer in terms of design and structure compared to the systems used in the current technique, to prevent accidents and life safety problems that may occur during instant intervention for broken ropes and broken pipes, and to provide a system that requires much lower intervention rates for the personnel and therefore has lower risk rates.
[0028] Another purpose of the invention is to minimize the cost and maintenance-repair needs compared to existing submersible cage systems, thanks to the structure and design of the system submerged with elastic ropes.
[0029] Another purpose of the invention is to stabilize the weight in the water and to prevent the stock from falling off the ropes due to shaking by reducing the wave effect of mussel species and seaweed production ropes in stormy weather.
[0030] Another purpose of the invention is to prevent the rope breakage of mussel species and seaweed production ropes by reducing the wave effect in stormy weather, and to ensure that the main rope is activated and continues to carry the stock in case the flexible rope breaks. The structural and characteristic features of the invention and all its advantages will be understood more clearly with the figures given below and the detailed explanation written by making references to these figures, therefore the evaluation should be made by taking these figures and detailed explanations into consideration.
[0031] Brief Description of the Figures
[0032] In order to best understand the structure of the present invention and its advantages together with the additional elements, it should be evaluated together with the figures explained below.
[0033] Figure-1 is a schematic general view of the fish cage submerged with elastic ropes.
[0034] Figure-2 is a schematic general view of the position of the fish cage submerged with elastic ropes underwater.
[0035] Figure-3 is the schematic general view of the elastic element being mounted between the carrier cage pipe and the net circle line.
[0036] Figure-4 is the detailed view of the elastic element.
[0037] Figure-5 is the schematic general view of the fish cage submerged with elastic ropes in a preferred embodiment of the invention.
[0038] Figure-6 is a schematic general view of the position of the fish cage submerged with elastic ropes underwater in a preferred embodiment of the invention.
[0039] Figure-7 is the schematic general view of the assembly of the elastic element between the carrier cage pipe and the net circle line in a preferred embodiment of the invention.
[0040] Figure-8 is the detailed view of the elastic element on the sideline in a preferred embodiment of the invention.
[0041] Figure-9 is the detailed view of the elastic element on the surface line in a preferred embodiment of the invention.
[0042] Figure-10 is a cross-sectional view of the system called "Long Line" used in the cultivation of mussel species and algae in a preferred application of the invention. Figure-11 is the detail view showing the positioning of the elastic ropes and fixed ropes carrying the mussels and algae in a preferred application of the invention.
[0043] Reference Numbers
[0044] 100. Cage assembly submerged with elastic ropes
[0045] 101. Carrier inner cage pipe
[0046] 102. Carrier outer cage pipe
[0047] 103. Bracket for connecting carrier pipes
[0048] 104. Weight rope
[0049] 105. Weight
[0050] 106. Rope clamp
[0051] 107. Net circle line
[0052] 108. Net rope
[0053] 109. Fish net
[0054] 110. Surface rope
[0055] 111. Cover net
[0056] 112. Weight connection rope
[0057] 113. Cover net rope
[0058] 114. Railing
[0059] 115. Buoy
[0060] 116. Bracket
[0061] 117. Elastic element
[0062] 118. Intermediate connection rope
[0063] 119. Air access ring 201 . Mussel / seaweed buoy
[0064] 202. Buoy connection rope
[0065] 203. Fixed mussel / seaweed rope
[0066] 204. Flexible mussel / seaweed rope
[0067] 205. Mussel / seaweed group
[0068] A. Sea
[0069] Detailed Description of the Invention
[0070] The fish net (109), the inner cage pipe (101) and the cage assembly (100) submerged with elastic ropes and connected to the outer cage pipe (102) for use in a submerged manner in fish farming in seas (A) and lakes, which is the subject of the invention in this detailed description, are explained only as an example for a better understanding of the subject and in a way that does not create any limiting effect.
[0071] The cage assembly (100) submerged with elastic ropes shown in Figure 1 was developed to eliminate the disadvantages of high cost and difficulty of use of the existing immersed cage applications in the current state of the art. The mentioned cage assembly (100) submerged with elastic ropes can be easily adapted to the majority of cage systems currently in use in seas (A) and lakes, which are widely used in the field of aquaculture all over the world, at low cost. The mentioned cage assembly (100) submerged with elastic ropes provides advantages not only for open sea (A) conditions exposed to storms and waves but also for sheltered bay and fjord areas.
[0072] The cage assembly (100) submerged with elastic ropes shown in Figure 2 is immersed under / into water in the sea (A) or lake. The said cage assembly (100) submerged with elastic ropes comprises: positioned at the top of the cage, the carrier (floater) inner cage pipe (101) which remains on the surface when the cage assembly (100) is submerged with the elastic ropes, and the carrier (floater) outer cage pipe (102) surrounding the outside of this carrier inner cage pipe (101 ); weights (105) connected to the cage assembly (100) submerged with elastic ropes by means of weight ropes (104) to keep the cage assembly (100) submerged with elastic ropes in a tight position underwater; the fish net (109) which prevents the fish inside from escaping; the cover net (111 ) which covers the upper part of this fish net (109); elastic element (117) which prevents the fish net (109) from being affected by sea (A) movements when the cage assembly (100) submerged with elastic ropes is immersed in water by stretching / oscillating. The cover net (111 ) of the cage assembly (100) submerged with said elastic ropes is suspended by a buoy (115) positioned on the water surface in order to maintain its conical shape upwards. The said weight ropes (104) extend along the net circle lines (107) from the weights (105) located at the bottom of the cage assembly (100) submerged with elastic ropes to the carrier inner cage pipe (101 ) and carrier outer cage pipe (102) located at the top. The connection between the weight ropes (104) and the lowest net circle line (107) is provided by the weight connection rope (112), and the connection between the net circle lines (107) arranged along the fish net (109) is provided by the intermediate connection rope (118).
[0073] The carrier inner cage pipe (101 ) and the carrier outer cage pipe (102) shown in Figure-3 are connected to each other by means of the carrier pipe connection bracket (103). The net circle lines (107) positioned on the fish net (109) from the said carrier inner cage pipe
[0074] (101 ) and the carrier outer cage pipe (102) towards the sea (A) bottom ensure that the fish net (109) is kept in a certain form. The weights (105) located at the bottom of the cage assembly (100) submerged with elastic ropes are connected to the weight rope (104) by means of the rope clamp (106).
[0075] On the weight rope (104) and net rope (108) shown in Figure-4, elastic elements (117) are positioned at the level of the carrier pipe connection bracket (103) that connects the carrier inner cage pipe (101 ) and the carrier outer cage pipe (102) to each other, located on the uppermost part of the cage assembly (100) that remains on the sea (A) surface, submerged with elastic elements (117). The said elastic element (117) is made of stretchable material (Bungee rope). Marine type flexible rope designs currently in production have approximately 100% flexibility length. The thickness and flexing capacities of the elastic elements (117) will be selected by calculating the cage diameters, the loads of the fish net (109) and the cover net (111 ) and the attached weights (105). The lengths of the weight ropes (104) and the net ropes (108) between the surface and the cage net are 80% longer than the elastic elements (117). The elastic elements (117) will be equipped with elastic ropes at two-meter intervals around the immersed cage assembly (100) and will suspend the immersed fish net (109) and the weight ropes (104) to which it is attached. In calm and waveless weather, the elastic element (117) carries the system with a tension of 10-20%. The thickness of the elastic elements (117) will be designed in accordance with these criteria. The tensions and relaxations caused by all kinds of regular and irregular wave movements on the surface act as shock absorbers by stretching and contracting the elastic elements (117) and ensure that the fish net (109) attached to the weights (105) can remain at a constant depth. If the tension ratios of the elastic ropes (117) reach 80% when the wave heights become too high, the carrier loads will be imposed on the weight rope (104) and the net rope (108). Therefore, the stress ratio of the elastic elements (117) will be limited to 80% and their damage will be prevented. If a rupture occurs, the carrier loads will be loaded onto the weight rope (104) and the net rope (108). If any wear or tear is detected during dive checks, the damaged elastic elements will be replaced. In thisway, the suspended cylindricalfish net (109) and the fish inside of it are safely kept at a constant depth without being affected by the vertical and horizontal movements of the carrier inner cage pipe (101) and the carrier outer cage pipe (102).
[0076] Figure 5 shows the application of the invention designed for Trout and Salmon. Species such as Trout and Salmon need to come to the surface at certain times and take air into their mouths in order to inflate their air sacs that provide their balance in the water. For the cultivation of such fish requiring air, an air access ring (119) is positioned on the surface of the cage assembly (100) submerged with elastic ropes. Here, the upper cover net (111) and its carrier ropes are fixed to the air access ring (119). The fish inside the cage will be able to reach the surface whenever they want through this corridor.
[0077] The cage assembly (100) submerged with elastic ropes shown in Figure 6 is structurally the same, except that a corridor is created at the top part, which allows the fish to reach the water surface whenever they want. In order to create the said channel, the cover net (111 ) is lifted up to the water surface and connected to a railing (114) on the surface. This small cage at the center should be covered with bird netting above the railing (114) level.
[0078] The railing (114) of the air access ring (119) shown in Figure 7 is positioned approximately 1 meter above the water level and can be covered with a bird protection net. The brackets (116), the air access rings (119) and the railing (114) move as a whole, like a small cage, and the connections between the carrier inner cage pipe (101) and the carrier outer cage pipe (102) are provided by surface ropes (110) equipped with elastic elements (117).
[0079] The elastic element (Bungee rope) (117) is positioned in the section where the carrier pipe connection bracket (103) which connects the carrier inner cage pipe (101) and the carrier outer cage pipe (102) to each other, on the uppermost part of the cage assembly (100) submerged with elastic ropes that remains on the sea (A) surface, is located on the weight rope (104) and net rope (108) shown in Figure 8. The elastic elements (117) suspend the fish net (109) and the weight ropes (104) attached to it, which are submerged around the cage assembly (100) with all elastic ropes at two-meter intervals. The tensions and relaxations caused by all kinds of regular and irregular wave movements on the sea (A) or lake surface act as shock absorbers by stretching and contracting the elastic elements
[0080] (117) and ensure that the fish net (109) attached to the weights (105) can remain at a constant depth.
[0081] In Figure 9, the connection of the surface rope (110) and the elastic element (117) stretched at certain intervals along the cage diameter on the surface between the float carrier inner cage pipe (101 ), the carrier outer cage pipe (102) and the air access ring (119) is shown. Thanks to this surface rope (110) and the elastic element (117), the air transportation cage will be able to maintain its position in the middle of the main cage in accordance with the horizontal tensions.
[0082] In a preferred embodiment of the invention shown in Figure 10, in the cage assembly (100) submerged with elastic ropes called "Long Line" used in the cultivation of mussel species and seaweed, the mussel / seaweed group (205) is suspended from the mussel / seaweed floats (201 ) on the surface and the buoy connection ropes (202) connectingthem to each other, with fixed mussel / seaweed ropes (203) and flexible mussel / seaweed ropes (204). Similarly, flexible mussel / seaweed ropes 204 can be used to reduce horizontal tensions between mussel / seaweed floats (201 ).
[0083] The mussel / seaweed group (205) shown in Figure 11 will remain unaffected by the wave movements on the sea surface at the depth it is submerged, thanks to the flexible mussel / seaweed ropes (204). The mussel / seaweed group (205) will be submerged to a depth of approximately twice the maximum wave height that can be experienced in the geography where the facility is located. The fixed mussel / seaweed ropes (203) are approximately 80% longer than the flexible mussel / seaweed ropes (204) and if the stretch exceeds this level, the loads are placed on the fixed mussel / seaweed ropes (203). There is a second set of elastic elements (117) positioned on the surface ropes (110) connected by extending to the floating carrier inner cage pipe (101) and the carrier outer cage pipe (102) attached to the connection bracket (103) of the carrier pipes surrounding it from the air access ring (119) on the surface. These surface ropes (110) equipped with elastic elements (117) are tension ropes. The said surface ropes (110) absorb the horizontal tensions on the water surface and ensure that the cover net rope (113), the railing (114) and the air access ring (119) are positioned in the center.
Claims
Claims1. A cage assembly (100) submerged with elastic ropes, used in fish farming in seas (A) and lakes;- suspended from the floating carrier inner cage pipe (101 ) and the carrier outer cage pipe (102) that are connected to each other by the pipe connection bracket (103), remaining on the surface,- consisting of weights (105) connected by weight ropes (104) to keep the cage assembly (100) submerged with elastic ropes in a fixed position under water where it is least affected by wave effects;- fish net (109) to prevent the fish inside from escaping;- the cover net (111) covering the upper part of this fishing net (109); characterized in that- it comprises an elastic element (117) positioned on the upper part of the weight rope (104) and the net rope (108) connected to the carrier pipe connection bracket (103) in order to prevent the fish net (109) from being affected by wave movements when the cage assembly (100) submerged with elastic ropes is immersed in water by stretching / oscillating, and to keep the immersed fish net (109) and the weight ropes (104) to which it is attached suspended along the entire circumference of the cage assembly (100) submerged with elastic ropes.
2. The cage assembly (100) submerged with elastic ropes according to claim 1 , wherein the elastic elements (117) are made of material that can stretch up to twice the maximum length of the waves.
3. The cage assembly (100) submerged with elastic ropes according to claim 2, wherein it comprises a cover net (111 ) at its top, which is connected to the air access circle by being lifted up to the water surface in order to create a line that allows fish needing air in their life cycle such as Salmon and Trout to reach the water surface whenever they require.
4. The cage assembly (100) submerged with elastic ropes according to claim 3, wherein it comprises a floating carrier inner cage pipe (101) attached to the connection bracket (103) of the carrier pipes surrounding it from the air transportation circle (119) on the surface and a second set of elastic elements (117) positioned on surface ropes (110) extended and connected to the carrier outer cage pipe (102).
5. The cage assembly (100) submerged with elastic ropes according to claim 4, wherein the surface ropes (110) are tension ropes equipped with elastic elements (117) that absorb horizontal tensions on the water surface for the central positioning of the cover net rope (113), the railing (114) and the air access ring (119).
6. The cage assembly (100) submerged with elastic ropes according to claim 1 , wherein the mussel / seaweed group (205) comprises the mussel / seaweed float (201 ) on the surface and the buoy connection ropes (202) connecting the mussel / seaweed float (201 ) to each other, and fixed mussel / seaweed ropes (203) for suspension.
7. The cage assembly (100) submerged with elastic ropes according to claim 6, wherein it comprises flexible mussel / seaweed ropes (204) positioned to the buoy connection ropes (202) and fixed mussel / seaweed ropes (203) that support the system and the cultivated products, so as to absorb horizontal and vertical water and wave movements.
Citation Information
Patent Citations
Breeding net cage for large-size finished fish products
CN110313428A
Anti-storm device and marine ranch breeding system
CN114731976A
Fish farming system
NO20220268A
KR20220037504A