WO2007108702A1 - Appareil pour chalut - Google Patents

Appareil pour chalut Download PDF

Info

Publication number
WO2007108702A1
WO2007108702A1 PCT/NO2007/000111 NO2007000111W WO2007108702A1 WO 2007108702 A1 WO2007108702 A1 WO 2007108702A1 NO 2007000111 W NO2007000111 W NO 2007000111W WO 2007108702 A1 WO2007108702 A1 WO 2007108702A1
Authority
WO
WIPO (PCT)
Prior art keywords
trawl
hydrofoil
disclosed
vessel
opening
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.)
Ceased
Application number
PCT/NO2007/000111
Other languages
English (en)
Inventor
Robert Ernsten
Roar ÅRSKOG
Jan H. Kjaerstad
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.)
Leroy Havfisk AS
Original Assignee
Aker Seafoods Holdings 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 Aker Seafoods Holdings AS filed Critical Aker Seafoods Holdings AS
Publication of WO2007108702A1 publication Critical patent/WO2007108702A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • A01K73/00—Drawn nets
    • A01K73/02—Trawling nets
    • A01K73/04—Devices for spreading or positioning, e.g. control thereof
    • 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
    • A01K73/00—Drawn nets
    • A01K73/02—Trawling nets
    • A01K73/04—Devices for spreading or positioning, e.g. control thereof
    • A01K73/045—Devices for spreading or positioning, e.g. control thereof for lateral sheering, e.g. trawl boards
    • 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
    • A01K73/00—Drawn nets
    • A01K73/02—Trawling nets
    • A01K73/04—Devices for spreading or positioning, e.g. control thereof
    • A01K73/05—Devices for spreading or positioning, e.g. control thereof for vertical sheering
    • 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
    • A01K73/00—Drawn nets
    • A01K73/02—Trawling nets
    • A01K73/025—Regulation of net depth

Definitions

  • the present invention relates to a trawl device for towing after a trawl vessel, wherein the trawl cooperates with a means for spreading open the opening of the trawl, as defined in more detail in the preamble of claim 1.
  • the trawl is towed behind a trawl vessel using adapted lines with or without otter boards, optionally with the use of a weight or weights attached to the trawl or the trawl lines or by using so-called steering lead weights which in terms of function correspond to otter boards, whereby seafood/ biomass such as fish, shrimp and krill and/or other seafood/biomass is gathered in a trawl bag.
  • a trawl bag After such a trawl bag has been more or less filled with seafood/biomass, it is normally hauled aboard the vessel and emptied. Alternatively, the trawl bag or sack is emptied whilst floating alongside the vessel.
  • Some types of seafood/biomass such as for instance krill, have a short lifetime after being gathered in the trawl and brought to the surface before they die and rapidly begin to decompose, their value as a raw material thus diminishing considerably. In general, it is important for all forms of seafood/ biomass that it should come to the vessel undamaged and as quickly as possible for further processing, as delays in this process usually substantially diminish the quality of the seafood/biomass.
  • Seafood/biomass that is subjected to rough handling and crushing through being gathered in a trawl bag, hauled on board the vessel and then emptied from the trawl bag, or by mechanical pumping from the trawl bag for collection on board the vessel, will also be of reduced quality and value because of the damage it suffers. The reduction in value will also extend to by-products from seafood/biomass such as roe, liver or the like. Seafood/biomass that is caught in a traditional manner will also largely be dead the moment it comes aboard the vessel.
  • Norwegian Patent Application 20053371 therefore describes a solution the object of which is to more efficiently convey undamaged and live seafood/biomass gathered by the trawl to a seafood/biomass receiving vessel, of particular importance for the gathering and conveying of krill, shrimp and other types of seafood/biomass, including all forms of fish, where conveyance to a production vessel for further processing and continuous, non-stop preservation on board can take place in controlled forms during continuous or prolonged trawling.
  • this solution can involve the use of a conveying hose for conveying the seafood/biomass from the rear portion of the trawl to the vessel, fluid, e.g., seawater, being injected into the conveying hose in order, by injector effect, to bring the seafood/biomass up to the vessel, and where the injector, which is, for example, depth-adjustable, is in an upper area of the conveying hose which has a marked gradient towards the sea surface.
  • fluid e.g., seawater
  • the aim is to spread open the opening of the trawl, according to the invention, in that said means, instead of, for example, otter boards, is comprised of an elongate hydrofoil to which the trawl, by its upper transverse length of the trawl opening, is attached, and is also comprised of a weight or weights that is/are fastened to at least one position in the lower part of the trawl opening, for example, the two lower corners of the trawl opening.
  • Hydrofoil in this context is understood as a flat body or an aerofoil-like body (body with wing cross-section) which during movement in water is affected hydrodynamically.
  • Fig. 1 is a side view of the device according to the invention when being towed by a trawl vessel.
  • Fig. 2 is a top view of the device in Fig. 1.
  • Fig. 3 is a side view of the device according to the invention in connection with bottom trawling.
  • Fig. 4 is a schematic perspective view of the device as shown used in Figs. 1 and 2.
  • Fig. 5 shows a modified use of the device according to the invention.
  • Fig. 6 shows the embodiment in Fig. 5 under tow by a trawl vessel.
  • FIGS. 1 and 2 show the use of two trawls 1, 2 which are towed simultaneously by a trawl vessel 3.
  • a person of skill in the art will, of course, understand that as an alternative only one trawl may be towed, or more than two trawls, e.g., three or four, may be towed.
  • the hydrofoil 4; 5 is connected to the trawl vessel 3 via at least one tow line 10; 11.
  • the tow line 10; 11 is connected to the hydrofoil 4; 5 via at least two branches 10' - 10""; l l' - l l"" from the tow line. If more than one trawl is towed, the trawls could advantageously be spread apart in that respective tow lines 10; 11 extend from cantilevered booms 12; 13 on the vessel 3 which are pivotal along an arc 12'; 13' as shown in Fig. 2.
  • each weight 6; 7; 8; 9 is suspended from a respective line 14; 15; 16; 17 which extends from an end area 4', 4"; 5', 5" of the respective hydrofoil 4; 5.
  • the hydrofoil 4; 5 may optionally be equipped with at least one upright wing 18; 19 which serves as a rudder for lateral steering and stabilisation of the hydrofoil. It is also possible to allow the hydrofoil 4; 5, in its upper surface, to be equipped with adjustable flaps 20, 21; 22; 23 which are upwardly tiltable for adjusting the lifting power of the hydrofoil in water during the towing of the hydrofoil and the trawl.
  • the wing and/or the flaps can be remote-controllable from the vessel, or that they are pre-set before the trawls are placed in the sea.
  • the trawl 1 ; 2 may be attached to the hydrofoil 3; 4 at at least three points.
  • the trawl can be attached to the hydrofoil at discrete points or continuously along the whole of the length of the hydrofoil.
  • trawl is attached to the hydrofoil at its rear area, its underside or its forward area depends on the chosen design of the hydrofoil and where it is most expedient, hydrodynamically, to make the attachment.
  • fluid e.g., seawater or air, or a mixture of seawater and air
  • the present example as shown in Figs. 1 - 4 also permits the trawls to be mutually independent as regards at least one of the following parameters: the size of each trawl, the distance of the trawls from each other transverse to the direction of travel of the trawl vessel, the distance between the trawl mouth and the stern of the trawl vessel, the depth of the trawls and the mesh size of the trawls.
  • Figs. 5 and 6 show a solution where two trawl bags 30, 31 are placed one above the other and interconnected via a hydrofoil 32.
  • the uppermost 30 of the trawl bags is fastened at a lower portion 30' of the trawl opening to the hydrofoil 32 at at least three points 33-35.
  • the upper portion 30" of the trawl opening of the trawl bag 30 is equipped with a plurality of floats 36, and tension lines 37, 38 connecting respective outer ends of the upper portion 30" with respective outer portions of the hydrofoil 32 will expediently be present.
  • the lowermost 31 of the trawl bags is fastened at an upper portion 31' of the trawl opening to the hydrofoil 32 at at least three points 39-41.
  • the lower portion 31 " of the trawl opening of the trawl bag 31 is equipped at its outer ends with a respective lead weight or respective weight 42, 43, and tension lines 44, 45 connecting respective outer ends of the lower portion 31" with respective outer portions of the hydrofoil 32 will expediently be present.
  • the hydrofoil 32 with the trawl bags 30, 31 fastened thereto is towed by means of a tow line 46 from a trawl vessel 47, the tow line 46 running down to the centre of the hydrofoil 32 and having branches 46', 46" to the outer ends of the hydrofoil 32.
  • Suction hoses or conveying hoses 49, 50 are, preferably together, run down from the trawl vessel 47 and underneath the lowest 31 of the trawl bags, the hose 49 running to the downstream end 30'" of the upper trawl bag 30 whilst the hose 50 is connected to the downstream end 31 " ' of the lower trawl bag 31.
  • Injectors 51 , 52 are connected in a rising portion of the hoses 49, 50 to effect pumping of the catch on board the trawl vessel 47.
  • a change of the trawling direction can be made somewhat faster than with two juxtaposed trawls, and only one common hydrofoil is needed, which with regard to possible limited storage space on board the trawl vessel 47 may be advantageous.
  • the location of the attachment points 33-35 and 39-41 on the hydrofoil for the trawl 30 and 31 , respectively, may be instrumental in how the hydrofoil will move in the sea when towed, i.e., has a tendency to move upwards, endeavours to remain at one level, or seeks to move downwards.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Farming Of Fish And Shellfish (AREA)

Abstract

Appareil pour chalut, remorqué derrière un chalutier, le chalut comportant, pour ouvrir en l'étirant l'ouverture du chalut, un hydrofoil allongé auquel le chalut est fixé par la longueur transversale supérieure de l'ouverture du chalut, et comportant également un ou plusieurs poids fixés à au moins une position dans la partie inférieure de l'ouverture du chalut, par exemple les deux coins inférieurs de l'ouverture du chalut. Le dispositif peut être utilisé avec un ou plusieurs chaluts remorqués côte à côte ou avec deux chaluts placés l'un au-dessus de l'autre et fixés à une remorque commune.
PCT/NO2007/000111 2006-03-23 2007-03-22 Appareil pour chalut Ceased WO2007108702A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20061315A NO20061315L (no) 2006-03-23 2006-03-23 Anordning ved tral
NO20061315 2006-03-23

Publications (1)

Publication Number Publication Date
WO2007108702A1 true WO2007108702A1 (fr) 2007-09-27

Family

ID=38522674

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2007/000111 Ceased WO2007108702A1 (fr) 2006-03-23 2007-03-22 Appareil pour chalut

Country Status (2)

Country Link
NO (1) NO20061315L (fr)
WO (1) WO2007108702A1 (fr)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008048107A1 (fr) * 2006-10-18 2008-04-24 Aker Biomarine Asa Procédés et agencements de chalut pélagique
WO2009136797A1 (fr) * 2008-05-06 2009-11-12 Calanus As Chalut
WO2010097699A1 (fr) 2009-02-26 2010-09-02 Aker Biomarine Asa Comprimés de phospholipides et protéines
WO2010097701A1 (fr) 2009-02-26 2010-09-02 Aker Biomarine Asa Compositions phospholipidiques à faible viscosité
US8697138B2 (en) 2007-03-28 2014-04-15 Aker Biomarine As Methods of using krill oil to treat risk factors for cardiovascular, metabolic, and inflammatory disorders
US9028877B2 (en) 2007-03-28 2015-05-12 Aker Biomarine Antarctic As Bioeffective krill oil compositions
US9420772B2 (en) 2013-03-15 2016-08-23 The New Zealand Institute For Land And Food Research Limited Apparatus and method for harvesting aquatic animals
US9867856B2 (en) 2014-01-10 2018-01-16 Aker Biomarine Antarctic As Phospholipid compositions and their preparation
NO20170257A1 (en) * 2017-02-22 2018-08-23 Selstad As Device for catching or keeping marine organisms
US10456412B2 (en) 2015-02-11 2019-10-29 Aker Biomarine Antarctic As Lipid extraction processes
US10704011B2 (en) 2013-06-14 2020-07-07 Aker Biomarine Antarctic As Lipid extraction processes
US10864223B2 (en) 2015-02-11 2020-12-15 Aker Biomarine Antarctic As Lipid compositions
NO20210685A1 (no) * 2021-05-31 2022-12-01 Stoe Tech As Kite for trål og anvendelse av Kite for trål
WO2023198752A1 (fr) 2022-04-12 2023-10-19 Aker Biomarine Antarctic As Farine de krill supplémentée et ses utilisations
EP4159034A4 (fr) * 2020-05-27 2023-12-13 East China Sea Fishery Research Institute Chinese Academy of Fishery Sciences Structure de perche pour ajustement de variation de couche d'eau de chalut de krill antarctique
US12426581B2 (en) 2019-08-23 2025-09-30 Karmøy Winch As Control system and method of controlling towed marine object

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB176327A (en) * 1921-02-28 1923-02-22 Jean Baptiste Joseph Alphonse Improvements in and relating to trawling gear
US1447553A (en) * 1921-07-21 1923-03-06 Mack R Hudson Trawl
US5201137A (en) * 1989-08-09 1993-04-13 Institut Francais de Research pour l'Exploitation de la Mer Hydrodynamic trawl opening device
US20060048436A1 (en) * 2003-07-15 2006-03-09 Aker Seafoods As Trawl apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB176327A (en) * 1921-02-28 1923-02-22 Jean Baptiste Joseph Alphonse Improvements in and relating to trawling gear
US1447553A (en) * 1921-07-21 1923-03-06 Mack R Hudson Trawl
US5201137A (en) * 1989-08-09 1993-04-13 Institut Francais de Research pour l'Exploitation de la Mer Hydrodynamic trawl opening device
US20060048436A1 (en) * 2003-07-15 2006-03-09 Aker Seafoods As Trawl apparatus

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008048107A1 (fr) * 2006-10-18 2008-04-24 Aker Biomarine Asa Procédés et agencements de chalut pélagique
US9816046B2 (en) 2007-03-28 2017-11-14 Aker Biomarine Antarctic As Bioeffective krill oil compositions
US10543237B2 (en) 2007-03-28 2020-01-28 Aker Biomarine Antarctic As Bioeffective krill oil compositions
US11865143B2 (en) 2007-03-28 2024-01-09 Aker Biomarine Antarctic As Bioeffective krill oil compositions
US9730966B2 (en) 2007-03-28 2017-08-15 Aker Biomarine Antartic As Method of reducing appetite in a human subject comprising administering krill oil composition
US8697138B2 (en) 2007-03-28 2014-04-15 Aker Biomarine As Methods of using krill oil to treat risk factors for cardiovascular, metabolic, and inflammatory disorders
US9028877B2 (en) 2007-03-28 2015-05-12 Aker Biomarine Antarctic As Bioeffective krill oil compositions
US9034388B2 (en) 2007-03-28 2015-05-19 Aker Biomarine Antartic As Bioeffective krill oil compositions
US9072752B1 (en) 2007-03-28 2015-07-07 Aker Biomarine Antarctic As Bioeffective krill oil compositions
US9078905B2 (en) 2007-03-28 2015-07-14 Aker Biomarine Antarctic As Bioeffective krill oil compositions
US9119864B2 (en) 2007-03-28 2015-09-01 Aker Biomarine Antarctic As Bioeffective krill oil compositions
US9220735B2 (en) 2007-03-28 2015-12-29 Aker Biomarine Antarctic As Methods of using krill oil to treat risk factors for cardiovascular, metabolic, and inflammatory disorders
US9320765B2 (en) 2007-03-28 2016-04-26 Aker Biomarine Antarctic As Bioeffective krill oil compositions
US9375453B2 (en) 2007-03-28 2016-06-28 Aker Biomarine Antarctic As Methods for producing bioeffective krill oil compositions
US10010567B2 (en) 2007-03-28 2018-07-03 Aker Biomarine Antarctic As Bioeffective krill oil compositions
US9644169B2 (en) 2007-03-28 2017-05-09 Aker Biomarine Antarctic As Bioeffective krill oil compositions
US9644170B2 (en) 2007-03-28 2017-05-09 Aker Biomarine Antarctic As Bioeffective krill oil compositions
US9889163B2 (en) 2007-03-28 2018-02-13 Aker Biomarine Antarctic As Bioeffective krill oil compositions
WO2009136797A1 (fr) * 2008-05-06 2009-11-12 Calanus As Chalut
WO2010097701A1 (fr) 2009-02-26 2010-09-02 Aker Biomarine Asa Compositions phospholipidiques à faible viscosité
US8372812B2 (en) 2009-02-26 2013-02-12 Aker Biomarine Asa Phospholipid and protein tablets
WO2010097699A1 (fr) 2009-02-26 2010-09-02 Aker Biomarine Asa Comprimés de phospholipides et protéines
US9420772B2 (en) 2013-03-15 2016-08-23 The New Zealand Institute For Land And Food Research Limited Apparatus and method for harvesting aquatic animals
US10704011B2 (en) 2013-06-14 2020-07-07 Aker Biomarine Antarctic As Lipid extraction processes
US11578289B2 (en) 2013-06-14 2023-02-14 Aker Biomarine Antarctic As Lipid extraction processes
US9867856B2 (en) 2014-01-10 2018-01-16 Aker Biomarine Antarctic As Phospholipid compositions and their preparation
US10456412B2 (en) 2015-02-11 2019-10-29 Aker Biomarine Antarctic As Lipid extraction processes
US11819509B2 (en) 2015-02-11 2023-11-21 Aker Biomarine Antarctic As Lipid compositions
US10864223B2 (en) 2015-02-11 2020-12-15 Aker Biomarine Antarctic As Lipid compositions
NO20170257A1 (en) * 2017-02-22 2018-08-23 Selstad As Device for catching or keeping marine organisms
NO343474B1 (en) * 2017-02-22 2019-03-25 Selstad As Device for catching or keeping marine organisms
WO2018156028A1 (fr) 2017-02-22 2018-08-30 Selstad As Dispositif permettant de capturer ou de conserver des organismes marins
US12426581B2 (en) 2019-08-23 2025-09-30 Karmøy Winch As Control system and method of controlling towed marine object
EP4159034A4 (fr) * 2020-05-27 2023-12-13 East China Sea Fishery Research Institute Chinese Academy of Fishery Sciences Structure de perche pour ajustement de variation de couche d'eau de chalut de krill antarctique
WO2022255880A1 (fr) * 2021-05-31 2022-12-08 Hammersland, Helge Cerf-volant pour chalut et utilisation de cerf-volant pour chalut
NO20210685A1 (no) * 2021-05-31 2022-12-01 Stoe Tech As Kite for trål og anvendelse av Kite for trål
WO2023198752A1 (fr) 2022-04-12 2023-10-19 Aker Biomarine Antarctic As Farine de krill supplémentée et ses utilisations

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Publication number Publication date
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