WO2005002330A1 - Method and installation for harvesting shellfish caught on a sheet-like substrate - Google Patents
Method and installation for harvesting shellfish caught on a sheet-like substrate Download PDFInfo
- Publication number
- WO2005002330A1 WO2005002330A1 PCT/NL2004/000464 NL2004000464W WO2005002330A1 WO 2005002330 A1 WO2005002330 A1 WO 2005002330A1 NL 2004000464 W NL2004000464 W NL 2004000464W WO 2005002330 A1 WO2005002330 A1 WO 2005002330A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- substrate
- harvesting
- members
- installation according
- water
- Prior art date
Links
- 239000000758 substrate Substances 0.000 title claims abstract description 147
- 238000003306 harvesting Methods 0.000 title claims abstract description 96
- 238000009434 installation Methods 0.000 title claims abstract description 44
- 235000015170 shellfish Nutrition 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 41
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 230000000284 resting effect Effects 0.000 claims description 2
- 230000037303 wrinkles Effects 0.000 description 8
- 241000237536 Mytilus edulis Species 0.000 description 6
- 235000020638 mussel Nutrition 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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
- A01K61/50—Culture of aquatic animals of shellfish
- A01K61/54—Culture of aquatic animals of shellfish of bivalves, e.g. oysters or mussels
-
- 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
- the present invention relates to a method for harvesting shellfish that have been caught on a sheet-like substrate, such as a net, wherein the substrate has a longitudinal direction and a transverse direction transverse thereto; wherein the substrate is fed in the longitudinal direction thereof between two harvesting members arranged parallel to one another and moving relative to the substrate, which harvesting members free the shellfish from the substrate on either side of the substrate; wherein the shellfish that have been freed are collected.
- a method of this type and a installation for carrying out this method is disclosed in
- WO 01/93671 According to WO 01/93671 the shellfish are harvested while the net on which they have been caught is suspended in the water.
- the harvesting installation used for this purpose consists of 2 frame sections hinged to one another, which frame sections can be placed in the opened out position on either side of the net with the hinge axis located along the top edge of the net and can then be folded towards one another so that the two frame sections are in contact with the net on either side.
- the net is fed in the longitudinal direction between these frame sections by moving the frame sections along the net.
- the frame sections are each provided at the front with a harvesting member in the form of, per frame section, a roller with loosening members that extends over the entire vertical transverse direction of the net.
- each roller has 2 profiled ribs, which, with a common starting point in the middle of each roller, extend in spiral form in opposing directions.
- the direction of rotation of the harvesting members in the form of rollers is always chosen such that, on the one hand, the rollers exert a force on the net/shellfish that is oriented in the opposite direction to the feed direction of the net and, on the other hand, that, as a consequence of the opposing spiral form, the ribs in the lower half of each roller exert a downward force on the shellfish/the net and in the upper half of the roller exert an upward force on the net/the shellfish.
- the harvesting member in the form of a roller on the one frame section - on the one side of the net - is arranged offset, in the longitudinal direction of the net, with respect to the harvesting member in the form of a roller on the other frame section - on the other side of the net - so that the net is not gripped by the harvesting members.
- the consequence of this is that the net can become wrinkled when it is fed between the harvesting members, for example as a result of the action of flow phenomena, such as waves, that exist in the water.
- the transport force for feeding the net between the harvesting members is supplied by means of 2 transport rollers - one on each side of the net - that are provided at the rear of the frame sections.
- the harvested part of the net is fed between these transport rollers, which harvested part is clamped between the transport rollers and as a consequence of the driven rotation thereof is pulled backwards between these transport rollers.
- problems can also arise with these transport rollers if the net becomes wrinkled.
- the aim of the present invention is to provide an improved method for harvesting shellfish that have been caught on a sheet-like substrate, such as a net, which improved method in particular prevents the abovementioned problems.
- Said aim is provided according to the invention by the providing a method for harvesting shellfish that have been caught on a sheet-like substrate, such as a net, wherein the substrate has a longitudinal direction and a transverse direction transverse thereto; wherein the substrate is fed in the longitudinal direction thereof between two harvesting members arranged parallel to one another and moving with respect to the substrate, which harvesting members free the shellfish from the substrate on either side of the substrate; wherein the shellfish that have been freed are collected; which method according to the invention is characterised in that the substrate is tensioned in the transverse direction at the harvesting members, independently of the operation of the harvesting members.
- the substrate can be tensioned not only in the vertical direction but also in the horizontal direction when it is fed between the harvesting members - which is advantageous in view of the inefficient harvesting members - it is advantageous according to the invention if, viewed in the longitudinal direction, transport means are provided after the harvesting members, by means of which transport means they exert a tensile force acting in the feed direction on the substrate.
- transport means are provided after the harvesting members, by means of which transport means they exert a tensile force acting in the feed direction on the substrate.
- the substrate is provided at the bottom edge and top edge running in the longitudinal direction with a bottom cable and top cable, respectively, and if the tensioning of the substrate in the transverse direction is effected by exerting a transverse tensioning force in the transverse direction on the bottom cable and or top cable.
- the force for tensioning in the transverse direction is then not exerted directly on the substrate but is exerted indirectly via a bottom cable and or top cable.
- a further advantage is that gripping to exert the transverse force takes place at the edges and thus has no, or at least little, influence on the shellfish to be harvested, which essentially are on the surface of the substrate.
- To further relieve the stress on the substrate and shellfish caught on the substrate it is furthermore advantageous according to the invention if, viewed in the longitudinal direction, a tensile force acting in said feed direction is exerted after the harvesting members on both the bottom cable and the top cable.
- the method according to the invention can also be employed under water as, for example, an improvement on what is disclosed in WO 01/93671, according to the invention it is preferable if the substrate is brought above the water, preferably completely above the water, from a vertical position suspended in the water, by means of a raising track running upwards from the water level, by pulling up the substrate on the raising track in said longitudinal direction while the substrate is suspended from said raising track and then feeding the substrate through said harvesting members by means of a feed track adjoining the raising track, whilst the substrate is suspended from said feed track so as to harvest above water.
- the advantage of harvesting the shellfish above water is that the influence of, for example, waves on the substrate during harvesting of the shellfish can be even further reduced.
- a further advantage is that there is better control over the harvesting process, the mussels can be collected more easily and then transferred, for example to a vessel.
- the substrate is returned to the water by means of a lowering track running downwards, whilst the substrate is suspended from said lowering track. Interim storage of the substrate is thus avoided.
- the substrate can be immediately suspended in the water again to gather in a new harvest of shellfish.
- the substrate which usually is provided with floats along the top edge, can then, for example, be suspended behind a ship and returned from a harbour or other harvesting location to the catch location.
- harvesting takes place on a vessel, or at least a floating body, the substrate being pulled up out of the water against the direction of flow of the water.
- a vessel or at least a floating body
- the substrate By carrying out harvesting on a floating body it is possible to remove the shellfish from the net at the location where they have been caught.
- the substrate By pulling up the substrate from the water against the direction of flow of the water, the substrate is, as it were, hauled in stretched out lengthwise.
- the substrate is furthermore advantageous if after harvesting the substrate is returned to the water with the direction of flow of the water. This prevents the possibility of the part of the substrate that still has to be harvested becoming entangled with the part of the substrate that has been harvested. After all, as a consequence of the flow, the two remain parallel alongside one another.
- the present invention relates to a installation for harvesting shellfish that have been caught on a sheet-like substrate, such as a net, wherein the substrate has a longitudinal direction, a transverse direction transverse thereto, a bottom longitudinal edge and a top longitudinal edge; wherein the installation comprises: • harvesting members extending in the transverse direction of the substrate, equipped to be able to feed the substrate, in the longitudinal direction thereof, between the harvesting members and in so doing to free the shellfish from the substrate;
- an upper substrate guide provided at the top of the harvesting members and extending in the longitudinal direction of the substrate, from which the substrate, or at least the portion of the substrate to be treated by the harvesting members, can be suspended.
- the transport means comprise upper transport means provided in the upper substrate guide, which upper transport means are equipped to engage on the substrate at the upper longitudinal edge.
- these upper transport means can advantageously comprise an endless conveyor. This endless conveyor will then engage on the top longitudinal edge over a certain distance and thus distribute the forces to be exerted on the substrate during this operation over some distance of the substrate.
- the upper conveyor advantageously comprises parallel endless chains provided some distance apart, which endless chains are provided with teeth. The lines to which floats are attached can then run between said endless chains, so that these floats can be carried along over the top of the endless conveyor.
- the teeth on the endless chains can then either engage directly on the top edge of the substrate, for example from either side, or, in another embodiment, on the floats. In this latter case, the risk of damage to the substrate itself is reduced to a rninimum.
- the installation furthermore comprises the substrate to be harvested and if the substrate is provided with floats along the top longitudinal edge, with engagement surfaces of a flexible, rubbery material provided at the bottom of the floats, and if the teeth on the endless chains are provided in such a way that they extend upwards from the top pack of the endless chains so as to be able to engage with the engagement surfaces of the floats resting on the endless chains.
- the floats By providing the floats with rubbery engagement surfaces, good grip of the teeth on the floats is ensured and the risk of damage to the floats themselves or of the floats possibly springing a leak is prevented.
- the engagement of the teeth with the floats themselves or with the engagement surfaces thereof is also very reliably ensured, at least when feeding the substrate between the harvesting members and before this, as a consequence of the substantial weight of harvested shellfish.
- the harvest at a substrate height of approximately 3 metres per horizontal straight length of the substrate will quite easily be 10s of kilograms, even more than 150 kilograms and sometimes 300 kilograms or more.
- the floats are attached to the top longitudinal edge of the substrate by means of elongated coupling members, termed lines, and if the distance between endless chains is such that elongated coupling members can extend between these with clearance.
- the transport means comprise bottom drive means that are provided in the bottom substrate guide and are equipped to engage on the bottom longitudinal edge of the substrate.
- the bottom drive means comprise a multiplicity of drive wheels that are equipped to engage, with the running surfaces thereof facing one another, on either side of the bottom longitudinal edge of the substrate. With this arrangement it is not necessary that all drive wheels are driven.
- the drive wheels on one side of the substrate are driven whilst wheels on the other side are not driven and constitute co-rotating counter wheels.
- the drive wheels comprise a row of first drive wheels, the axes of which are parallel to one another and in line, and a second row of drive wheels, the axes of which are in line with one another, wherein the row of first drive wheels and row of second drive wheels run parallel to one another, if the first drive wheels and second drive wheels are provided offset with respect to one another such that the first and second drive wheels can be located with the portions of the peripheral surfaces facing one another interspersed.
- the tensioning means comprise two rotary tensioning wheels that are arranged alongside one another with their circular surfaces facing one another and are equipped to engage, when located on either side of the substrate to be fed between them, with the peripheral surfaces on the top of the bottom longitudinal edge of said substrate in order to exert a downward force on said bottom longitudinal edge.
- These tensioning wheels can optionally be driven and in particular could also be free-running tensioning wheels. The sole function of these wheels is to hold the bottom edge of the substrate pressed downwards, i.e. to keep it a sufficiently great distance away from the top edge of the substrate.
- the tensioning wheels are advantageously provided after the harvesting members.
- the tensioning wheels are arranged at an angle with respect to one another, so that there is room for the substrate to pass through.
- the installation has a substrate with a bottom longitudinal edge comprising a cable.
- a raising track that runs upwards from the water level and on deck adjoins one end of the top substrate guide to guide substrate suspended from the raising track into the top substrate guide.
- the installation has a lowering track that adjoins the other end of the top subsfrate guide and runs down to the water in order to return the subsfrate from which the shellfish have been removed to the water.
- Figure 1 shows a diagrammatic and perspective view of an installation according to the invention
- Figure 2 shows diagrammatically and in side view as a detail, the II section in Figure 1 of the raising track of the installation in Figure 1
- Figure 3 shows diagrammatically and in a side view (Fig 3a) and rear view (Fig. 3b), as a detail, the section III in Figure 2
- Figure 4 shows a diagrammatic and perspective view of the tensioning and transport means engaging on the bottom of the substrate.
- Figure 1 shows, highly diagrammatically, an installation 1 for harvesting shellfish that have been caught, in particular mussels.
- the installation 1 has a vessel in the form of a pontoon 2, that is itself able to float.
- One, two or more vertical columns 3 can advantageously be provided to anchor the vessel. These columns 3 are driven into the bed of the body of water and the pontoon 2 will advantageously be able to move up and down along the columns 3 in connection with the ebb and flow action.
- Such a pontoon 2 can easily be positioned with its front end 4 facing into the current indicated by arrow 5, by lifting the columns located at the rear from the bed of the body of water. The pontoon 2 will then, especially if the column provided at the front end 4 is provided centrally - in contrast to what is shown - automatically be oriented by the current facing the direction of flow 5.
- the substrate consists of an elongated net 6 which has, for example, a height of approximately 3.5 metres in the vertical direction and a length of, for example, approximately 110 metres in the longitudinal direction.
- the net 6 is provided along the entire top edge with a cable 8, from which the net 6 is suspended.
- Floats in the shape of barrels 9 that are attached to the top cable 8 by means of ropes and/or chains 10, hereinafter referred to as lines 10, are provided along the entire cable 8.
- the floats 9 are provided so to say shoulder to shoulder.
- a disc 11 of rubbery material is provided below each float 9, which disc 11 has a central opening through which line 10 has been pushed.
- the net 6 is provided with a bottom cable 7.
- anchor lines attached to the ends of the bottom cable 7.
- the intake guide 12 has at the bottom thereof an uninterrupted slot running in the longitudinal direction thereof, through which the lines 10 can extend. On either side of this slot, guide rails are provided on which the bottom of the float 9 or, if provided, the discs 11 come to bear.
- the upward sloping section 13 of the intake guide adjoins the driven, sloping section 14 of the raising track.
- the sloping, driven section 14 of the raising track merges into an essentially horizontal, driven feed track 15.
- the driven section 14 of the raising track and the driven feed track 15 use is made of- see in particular Figures 3a and 3b - two endless chains 16 arranged in parallel with toothcombs 17 on the sides thereof that are oriented outwards.
- the float line 10 runs between the two parallel endless chains 16 - see Figure 3b - and the float 9 or, in the example shown, the disc 11 - that is fixed to the line 10 - bears on the top parts of the endless chains 16.
- the discs 11 are, in particular, made of a rubbery material.
- the first section 21 of the lowering track is essentially a U-bend section and the second section of the lowering track is a section 22 that slopes downwards to the water.
- transport means can optionally also be provided in the lowering track 21 , 22, so as to transport the net suspended underneath it more easily further along the lowering track 21, 22.
- the harvesting members 19 can be constructed in a wide variety of ways.
- the harvesting members 19 are constructed as two rollers arranged on either side of the net 6 with coarse brash hairs provided over the entire periphery.
- the direction of rotation of the rollers for the purposes of harvesting is oriented such that the rollers 19 essentially work against feeding of the net 6 in the feed direction according to arrow 23.
- two tensioning wheels 24, 25 are provided on either side of the net 6.
- each tensioning wheel is made up of two discs, an outer disc 26 with a larger diameter and an inner disc 27 with a smaller diameter.
- the inner disc 27 is in each case so arranged that the peripheral rim thereof bears on top of the bottom cable 7.
- the bottom cable 7 is thus pushed downwards from either side of the net 6 by, in each case, a disc 27 with a smaller diameter.
- the discs 26 with a larger diameter are located next to the bottom cable 7 to hold this in place, i.e. to prevent the latter from running off the smaller discs 27, which are actually acting as tensioning means.
- the tensioning discs 24, 25 are each mounted free running on bearings on individual shafts 28.
- bottom transport means 30 are provided after the tensioning wheels 24, 25.
- these bottom transport means 30 are constructed as a first row of four driven transport wheels 31 and a second row of three free-running or optionally also driven wheels 32.
- the wheels 31 and 32 have a concave surface of revolution such that the bottom cable 7 is guided between them.
- the wheels 31 in the first row and the wheels 32 in the second row offset with respect to one another and also with a distance between them in each case, the parts of the surfaces of revolution of the wheels 31 and 32 facing one another can be interspersed, as a consequence of which the bottom cable 7 fed between them will follow a wavy path.
- This wavy path enables better grip on the bottom cable 7 and thus more reliable drive.
- the drive of the driven transport wheels 31 will, in particular, be so controlled that the bottom cable 7 is fed in the direction of arrow 23 at the same speed as the top cable 8. In other words, the speed of rotation of the driven wheels 31 will be matched to the transport speed of the endless chains 16.
- the bottom transport means are also able to counteract pulling the net skew as a consequence of raising it from the water at an angle. Furthermore, practice shows that more mussels are caught at the top of the net than at the bottom, which leads to differences in resistance and tendency to pull skew. This difference in resistance can be compensated for by means of a drive both at the top of the net and at the bottom of the net. For this purpose the bottom drive and top drive will be controllable such that the net is fed past the harvesting members at the same speed at the bottom and at the top.
- the mussels freed from the net by means of the harvesting members 19 will drop onto the deck of the pontoon 2 or optionally fall into a collection device and could then be transferred from said deck or from said collection device to a vessel moored alongside the pontoon 2.
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- 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)
- Adornments (AREA)
- Finger-Pressure Massage (AREA)
- Meat, Egg Or Seafood Products (AREA)
- Processing Of Meat And Fish (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04748694A EP1641339B1 (en) | 2003-07-04 | 2004-06-30 | Method and installation for harvesting shellfish caught on a sheet-like substrate |
DK04748694T DK1641339T3 (en) | 2003-07-04 | 2004-06-30 | Process and plant for harvesting seafood caught on a sheet-shaped substrate |
AU2004253436A AU2004253436B2 (en) | 2003-07-04 | 2004-06-30 | Method and installation for harvesting shellfish caught on a sheet-like substrate |
CA2531130A CA2531130C (en) | 2003-07-04 | 2004-06-30 | Method and installation for harvesting shellfish caught on a sheet-like substrate |
DE602004003823T DE602004003823T2 (en) | 2003-07-04 | 2004-06-30 | METHOD AND APPARATUS FOR HARVESTING SHELL ANIMALS RESTORED ON A LEAF SUBSTRATE |
NZ544447A NZ544447A (en) | 2003-07-04 | 2004-06-30 | Method and installation for harvesting shellfish caught on a sheet-like substrate |
NO20060563A NO324926B1 (en) | 2003-07-04 | 2006-02-03 | Method and installation for housing shellfish caught on a plate-like substrate |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1023830 | 2003-07-04 | ||
NL1023830A NL1023830C2 (en) | 2003-07-04 | 2003-07-04 | Method and device for harvesting shellfish caught on a sheet-like substrate. |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005002330A1 true WO2005002330A1 (en) | 2005-01-13 |
Family
ID=33563081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/NL2004/000464 WO2005002330A1 (en) | 2003-07-04 | 2004-06-30 | Method and installation for harvesting shellfish caught on a sheet-like substrate |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP1641339B1 (en) |
AT (1) | ATE348515T1 (en) |
AU (1) | AU2004253436B2 (en) |
CA (1) | CA2531130C (en) |
DE (1) | DE602004003823T2 (en) |
DK (1) | DK1641339T3 (en) |
ES (1) | ES2277269T3 (en) |
NL (1) | NL1023830C2 (en) |
NO (1) | NO324926B1 (en) |
NZ (1) | NZ544447A (en) |
WO (1) | WO2005002330A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL2010687C2 (en) * | 2013-04-22 | 2014-10-23 | Murre Techniek Holding B V | METHOD AND DEVICE FOR COLLECTING SHELLFISH |
WO2016166018A1 (en) * | 2015-04-14 | 2016-10-20 | Akva Total As | System and apparatus for cultivating and harvesting aquatic biomass |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001093671A1 (en) * | 2000-05-22 | 2001-12-13 | Aspoey Bjoern | Device for harvesting of and tending to shells and for cleaning of an associated shell collector in water |
-
2003
- 2003-07-04 NL NL1023830A patent/NL1023830C2/en not_active IP Right Cessation
-
2004
- 2004-06-30 WO PCT/NL2004/000464 patent/WO2005002330A1/en active IP Right Grant
- 2004-06-30 CA CA2531130A patent/CA2531130C/en not_active Expired - Fee Related
- 2004-06-30 AT AT04748694T patent/ATE348515T1/en not_active IP Right Cessation
- 2004-06-30 DE DE602004003823T patent/DE602004003823T2/en not_active Expired - Lifetime
- 2004-06-30 DK DK04748694T patent/DK1641339T3/en active
- 2004-06-30 AU AU2004253436A patent/AU2004253436B2/en not_active Ceased
- 2004-06-30 ES ES04748694T patent/ES2277269T3/en not_active Expired - Lifetime
- 2004-06-30 NZ NZ544447A patent/NZ544447A/en not_active IP Right Cessation
- 2004-06-30 EP EP04748694A patent/EP1641339B1/en not_active Expired - Lifetime
-
2006
- 2006-02-03 NO NO20060563A patent/NO324926B1/en not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001093671A1 (en) * | 2000-05-22 | 2001-12-13 | Aspoey Bjoern | Device for harvesting of and tending to shells and for cleaning of an associated shell collector in water |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL2010687C2 (en) * | 2013-04-22 | 2014-10-23 | Murre Techniek Holding B V | METHOD AND DEVICE FOR COLLECTING SHELLFISH |
WO2016166018A1 (en) * | 2015-04-14 | 2016-10-20 | Akva Total As | System and apparatus for cultivating and harvesting aquatic biomass |
NO345192B1 (en) * | 2015-04-14 | 2020-11-02 | Akvatotal As | System and apparatus for cultivating and harvesting aquatic biomass |
Also Published As
Publication number | Publication date |
---|---|
DE602004003823D1 (en) | 2007-02-01 |
NL1023830C2 (en) | 2005-01-05 |
ES2277269T3 (en) | 2007-07-01 |
NO324926B1 (en) | 2008-01-07 |
AU2004253436B2 (en) | 2009-09-17 |
CA2531130A1 (en) | 2005-01-13 |
NO20060563L (en) | 2006-03-30 |
NZ544447A (en) | 2007-10-26 |
ATE348515T1 (en) | 2007-01-15 |
DK1641339T3 (en) | 2007-04-30 |
EP1641339B1 (en) | 2006-12-20 |
DE602004003823T2 (en) | 2007-10-11 |
CA2531130C (en) | 2012-10-30 |
EP1641339A1 (en) | 2006-04-05 |
AU2004253436A1 (en) | 2005-01-13 |
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