EP0215020A1 - Enceinte d'elevage pour pisciculture et autre - Google Patents

Enceinte d'elevage pour pisciculture et autre

Info

Publication number
EP0215020A1
EP0215020A1 EP86901144A EP86901144A EP0215020A1 EP 0215020 A1 EP0215020 A1 EP 0215020A1 EP 86901144 A EP86901144 A EP 86901144A EP 86901144 A EP86901144 A EP 86901144A EP 0215020 A1 EP0215020 A1 EP 0215020A1
Authority
EP
European Patent Office
Prior art keywords
net
fish
cages
farming
farming enclosure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP86901144A
Other languages
German (de)
English (en)
Inventor
Sigmund Fredriksen
Einar Tore Esaiassen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SENJA AQUASERVICE AS
Original Assignee
SENJA AQUASERVICE AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SENJA AQUASERVICE AS filed Critical SENJA AQUASERVICE AS
Publication of EP0215020A1 publication Critical patent/EP0215020A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K61/00—Culture of aquatic animals
    • A01K61/60—Floating cultivation devices, e.g. rafts or floating fish-farms
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81—Aquaculture, e.g. of fish

Definitions

  • a farming enclosure for fish and the like A farming enclosure for fish and the like
  • the present invention relates to a farming enclosure for fish or marine animals, comprising a supporting structure provided at the water surface, to which structure a net is secured for forming one or more net cages constituting one or more dwell ⁇ ing zones under water for the fish.
  • Such farming enclosures require maintenance and overhaul irre ⁇ spective of how the supporting structure is designed.
  • Impregnation represents considerable expense to the farmer, and chemical compounds preventing fouling by algae in some cases may have a detrimental effect on the environment of the fish.
  • Another method of keeping the nets clean is to exchange the nets at certain intervals. It is, however, very demanding to exchange net cages in the present farming systems, and it will cause strain for the fish, because the fish will have to be moved to another net during the cleaning process. This will re ⁇ sult in loss, because of increased demand for labour, loss in efficiency, and reduced production in the plant.
  • Another problem of the present farming enclosures is that they have a structure that is too weak to withstand storm, ice- covering, and foreign bodies in the water. In practice, foreign bodies often penetrate below the buoyancy members damaging the net or destroying both the buoyancy member and the net. In Northern Norway ice-covering of the plant is a considerable problem to farmers of edible fish.
  • the floating structures of the present farming en ⁇ closures are not very mobile. This impedes work with moving and mooring the farming enclosures, e.g. . if fish is to be treated against disease, or slaughtered.
  • a farming enclosure of the kind ment ⁇ ioned above which according to the invention is characterized in that saidfarming enclosure comprises means serving to exchange net while the fish dwells in the net cage or cages.
  • Said means for exchanging net comprise a first and a second reel of net, each provided at one end of the farming enclosures said net reels serving for alternating reeling up and reeling off net along the area of the dwelling zones of the fish.
  • the net reels may be operated by motor or wave power, and the motive pow_er can be controlled manually or automatically.
  • adjustable guide means are provided for adjusting the cage depth and for guiding the net between exchange means.
  • Said guide means may be somewhat resiliently mounted to balance tension in the net cages, and they are also provided with individual adjusting means. ith such a mechanism it will be a simple matter to change the net without having to move the fish to another net cage.
  • the structure also comprises cleaning means for the net, preferably in the area of the net reels. In the same area collecting means may be provided for the waste removed from the net.
  • the structure may be of a kind permitting the net to be pulled from one side of the plant to the other with a velocity of 2-3 m/hour.
  • On the bottom of the net gripping means may be mounted to remove dead fish from the net bottom. Beneath said reels nozzles may be mounted which continuously rinse the net.
  • said net is covered by a portion of the supporting structure.
  • This port ⁇ ion of said structure protects the net and the net cage or cages resp. , not only against waves, but also against foreign bodies in the sea and against cold surface water.
  • the sides of the farming enclosure may, e.g. be submerged approximately 1.25 m below the water surface and this portion of the supporting structure may have a bow profile, preferably at both ends.
  • Such a bow shaped and net protecting structure will also simplify moving the entire structure from one place to another, which is suitable if several farming enclosures are connected to larger assemblies.
  • the exchangeable net is preferably provided in a supporting structure forming a floating unit with suitable access paths around the separate net cages. It is important that access paths and feeding stations are. wide, permitting special feeding carriages to be used. This contributes to improved working conditions and to a safer work-place.
  • the floating structure can also be provided with a roof, which may be advantageous for outdoor plants, especially in the cold season.
  • Figure 1 is a plan view of an embodiment of a farming enclosure according to the present invention.
  • Figure 2 is a side elevation of the farming enclosure according to Figure 1.
  • Figure 3 is a sectional view of the farming enclosure shown in Figure 1 and 2.
  • Figure 4 is a diagrammatic top view of an embodiment of four farming enclosures, each comprising two net cages arranged side- by-side.
  • the plant comprises a supporting structure provided at the surface of the sea and to which a net is secured for forming one or a plurality of net cages where fish or other marine animals can dwell under water.
  • Said supporting structure comprises a buoyancy member compris ⁇ ing a plurality of'pontoons 1 in the shape of tubes with a bow profile at each end. Tight walls 2 of plates are welded to the pontoons and said walls together with said pontoons 1 extend approximately 1.25 m below the water surface 2a.
  • This combined tube and plate structure will contribute to keep cold surface water from the area that is limited by said walls 2, at the same time as the structure ensures the possibility of pumping warmer water from deeper layers of the sea.
  • Such a structure can improve the breeding environment of the fish 2b dwelling in the farming enclosure, as well as preventing fish from dying due to cold surface water.
  • the pontoons 1 with walls 2 are protected by fenders 3 so that the floating structural units can be assembled to larger units.
  • a net 4 is extended to form two net cages 4a and 4b, said net 4 being specially designed to withstand stretch loads and to ensure good flow through said net cages or dwelling zones of the fish 2b.
  • the members for changing the net are shaped as net reels 5 provid ⁇ ed at each end of the plant, said reels 5 serving to alternat ⁇ ely reel up and reel off net along the area of the dwelling zones of the fish.
  • the structure is adapted for the net reels 5 to be able to handle two cages 4a and 4b.
  • At its upper edges the net is rein ⁇ forced by a rope 15, which is, in turn, in connection with said guide rolls 10.
  • the structure is provided with gangways 8 and 17 and spacious working decks 13 to ensure good access to the structure.
  • the units may also be provided with a roof 21 which will addition ⁇ ally improve working conditions.
  • a cleaning area 9 is preferably provided in the area of the net reels 5.
  • the net 4 may be cleaned as it is pulled up from the sea area and is wound onto the net reels 5, e.g. manually by high pressure washing 16 or by the aid of a stationary washing device on working deck 13.
  • Near the washing area 9 tanks may suitably be provided for collect ⁇ ing washing sludge, e.g. algae and other kinds of waste.
  • the tanks may be ' placed at the ends of the structure, and the sludge can be removed when necessary, either by dumping in the sea or by being transferred to other containers.
  • the length of the net material per se should be at least twice the length provided in the water, so that there is al ⁇ ways a clean half reeled up. In this manner the net can be cleaned and mended when this is necessary without the fish being disturbed or moved.
  • a bird net 20 may be pro ⁇ vided which will prevent birds from reaching the net cages 4a and 4b with the fish 2b.
  • a belaying cleat 14 is provided for a mooring hawser and, if desired, a towline.
  • a feeding station 18 is provided, which may comprise a cross gangway with a transport path 19 taking the load of a carriage or a trolley with feed.
  • FIG 4 an embodiment of a plant is shown comprising four pontoon members, e.g. of the kind disclosed above in connection with Figures 1-3.
  • Each farming enclosure comprises two net cages 4a,4b, and each farming enclosure can be towed off rapidly in case of disease or for slaughtering the fish.
  • the shown struct ⁇ ure permits simple mooring to a jetty 25 or, if desired, to a waterside 26, as well as to other breeding baskets. Because of its boat shape the separate farming enclosures will be simple to moore, and they can be towed and displaced in a rapid and efficient manner.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Zoology (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Farming Of Fish And Shellfish (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)

Abstract

L'enceinte d'élevage de la présente invention permet d'épargner beaucoup de travail au pisciculteur lorsque les cages à filet (4a, 4b) d'une pisciculture en mer doivent être remplacées et nettoyées. A cet égard, une enceinte de pisciculture ou autre comprend une structure de support placée à la surface de l'eau (2a) et à laquelle un filet (4) est attaché pour former une ou plusieurs cages à filet (4a, 4b) formant une ou plusieurs zones d'habitation sous l'eau dans lesquelles vivent les poissons. Selon l'invention, des moyens (5, 6, 7) sont prévus et servent à changer le filet (4) pendant que le poisson vit dans lesdites cages à filet (4a, 4b). Dans un mode de réalisation de l'invention, un rouleau à filet (5) est utilisé à chaque extrémité de la structure. Les rouleaux (5) servent à enrouler et dérouler alternativement le filet (4) le long des zones d'habitation (4a, 4b) des poissons, permettant de rincer simultanément le filet (4) dans la zone des rouleaux à filet (5). De cette manière, un filet propre (4) pour les cages (4a, 4b) est toujours stocké et les cages peuvent être remplacées sans avoir à déplacer les poissons (2b). Pour empêcher que le filet ne remonte vers la surface (2a) dans les zones où il forme les cages à filet (4a, 4b), la structure comprend des moyens de guidage (6) montés sur des coulisses réglables (7). La structure comprend une partie (1, 2) s'étendant vers le bas dans la mer dans la zone du filet pour supprimer le mouvement des vagues et empêcher les corps étrangers et la glace de pénétrer dans les cages à filet (4a, 4b).
EP86901144A 1985-02-18 1986-02-03 Enceinte d'elevage pour pisciculture et autre Withdrawn EP0215020A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO850629 1985-02-18
NO850629A NO157561C (no) 1985-02-18 1985-02-18 Oppdrettsmaer for fisk eller sjoedyr.

Publications (1)

Publication Number Publication Date
EP0215020A1 true EP0215020A1 (fr) 1987-03-25

Family

ID=19888126

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86901144A Withdrawn EP0215020A1 (fr) 1985-02-18 1986-02-03 Enceinte d'elevage pour pisciculture et autre

Country Status (6)

Country Link
EP (1) EP0215020A1 (fr)
JP (1) JPS62501887A (fr)
DK (1) DK497186D0 (fr)
FI (1) FI864221A0 (fr)
NO (1) NO157561C (fr)
WO (1) WO1986004780A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103518654A (zh) * 2013-09-18 2014-01-22 苏州市阳澄湖现代农业产业园特种水产养殖有限公司 鳉鱼的养殖方法

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GR1000694B (el) * 1989-11-29 1992-10-08 Ydrofarm E P E Κλειστος-περιστροφικος κλωβος ιχθυοκαλλιεργειας κατασκευαστικως οριζομενου σχηματος και ογκου.
NO316102B1 (no) * 2002-08-26 2003-12-15 Kurt Andre Stroemmen Merdanlegg for fiskeoppdrett
KR100539410B1 (ko) * 2004-03-02 2005-12-28 정정호 전천후 가두리 양식장
FR2903571B1 (fr) * 2006-07-11 2016-02-12 Alwin Sarl Cages en rotation pour aquaculture.
WO2014204409A1 (fr) * 2013-06-20 2014-12-24 Toh Kok Hong Appareil destiné à la culture d'organismes marins
CN105165701B (zh) * 2015-09-27 2016-05-18 中国海洋大学 一种调节海水酸度的海洋生物养殖装置
CN110573009A (zh) * 2017-04-26 2019-12-13 三菱电机株式会社 养殖装置、养殖系统以及养殖方法
NO343994B1 (en) * 2017-11-09 2019-08-12 Global Maritime As Fish farm
US20200344982A1 (en) * 2018-01-13 2020-11-05 Shin Nippon Biomedical Laboratories, Ltd. Fish-breeding enclosure
FR3086840A1 (fr) * 2018-10-06 2020-04-10 Serge Menard Installation d'aquaculture flottante
NO346205B1 (en) * 2020-03-19 2022-04-19 Aker Solutions As A fish farming plant and methods of operation
CN114885877B (zh) * 2022-02-23 2024-03-29 中国电建集团华东勘测设计研究院有限公司 一种分片式可更换海洋牧场网箱结构及其在位运维方法
CN117184335B (zh) * 2023-09-08 2024-06-21 天海融合防务装备技术股份有限公司 一种舷侧开放的外挂养殖网箱的养殖工船

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4252081A (en) * 1979-02-16 1981-02-24 Marine Aquaculture (Scotland) Limited Fish cage and method of cleaning fish cage
DE3417105A1 (de) * 1984-05-09 1985-11-14 Olympia Werke Ag, 2940 Wilhelmshaven Mitnehmerkupplung zwischen einem antriebsmechanismus einer kassettenaufnahmevorrichtung und einem farbbandantrieb einer farbbandkassette

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8604780A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103518654A (zh) * 2013-09-18 2014-01-22 苏州市阳澄湖现代农业产业园特种水产养殖有限公司 鳉鱼的养殖方法

Also Published As

Publication number Publication date
DK497186A (da) 1986-10-17
NO850629L (no) 1986-08-19
NO157561C (no) 1988-04-13
FI864221A (fi) 1986-10-17
WO1986004780A1 (fr) 1986-08-28
DK497186D0 (da) 1986-10-17
FI864221A0 (fi) 1986-10-17
NO157561B (no) 1988-01-04
JPS62501887A (ja) 1987-07-30

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Legal Events

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Inventor name: ESAIASSEN, EINAR, TORE

Inventor name: FREDRIKSEN, SIGMUND