WO2003094370A1 - Improved aquatic vessel hull - Google Patents

Improved aquatic vessel hull Download PDF

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Publication number
WO2003094370A1
WO2003094370A1 PCT/AU2003/000534 AU0300534W WO03094370A1 WO 2003094370 A1 WO2003094370 A1 WO 2003094370A1 AU 0300534 W AU0300534 W AU 0300534W WO 03094370 A1 WO03094370 A1 WO 03094370A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrodes
hull
aquatic vessel
aquatic
electromagnetic field
Prior art date
Application number
PCT/AU2003/000534
Other languages
French (fr)
Inventor
Michael Wescombe-Down
Original Assignee
Seachange Technology Holdings Pty Ltd
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 Seachange Technology Holdings Pty Ltd filed Critical Seachange Technology Holdings Pty Ltd
Priority to BRPI0309899A priority Critical patent/BRPI0309899A8/en
Priority to JP2004502486A priority patent/JP2005524571A/en
Priority to AU2003225326A priority patent/AU2003225326A1/en
Priority to US10/513,570 priority patent/US20060016379A1/en
Publication of WO2003094370A1 publication Critical patent/WO2003094370A1/en

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
    • A01K79/00—Methods or means of catching fish in bulk not provided for in groups A01K69/00 - A01K77/00, e.g. fish pumps; Detection of fish; Whale fishery
    • A01K79/02—Methods or means of catching fish in bulk not provided for in groups A01K69/00 - A01K77/00, e.g. fish pumps; Detection of fish; Whale fishery by electrocution

Definitions

  • This invention relates to devices and applications of generating electromagnetic fields within a body of water to repel aquatic creatures such as sharks.
  • Numerous devices are known for the purpose of repelling aquatic creatures. The majority of these devices are designed to generate an electromagnetic field in close proximity of a diver or to form a barrier or boundary in the nearby water.
  • pulse signal generators are used, the characteristics of which include a specification of signal duration, repetition rate, amplitude and pulse rise time. The value or ranges of each characteristic are carefully selected so as to create the electromagnetic field deemed most effective.
  • an aquatic vessel hull adapted to support at least two electrodes connectable to an electromagnetic field signal generator, in use, the electrodes generating an electromagnetic field in a volume of water about the vessel, the electromagnetic field acting to repel selected aquatic creatures.
  • the aquatic vessel hull includes at least two recesses for receiving one each of the at least two electrodes, such that the at least two electrodes do not protrude substantially beyond the upper surface of the hull.
  • the aquatic vessel hull further includes a channel connecting said recesses, said channel adapted to accommodate an electrode cord terminating at each end being one of said at least two electrodes.
  • the recesses are formed so as to allow maximum efficiency of distribution of the electromagnetic field generated by said electrodes when in use.
  • an aquatic vessel hull incorporating at least two electrodes, connectable to an electromagnetic field signal generator, in use, the said electrodes generating an electromagnetic field in a volume of water about the aquatic vessel, said field acting to repel selected aquatic creatures.
  • the electrodes do not substantially protrude beyond the surface of said hull.
  • the electrodes are received in corresponding recesses in said hull.
  • the electrodes constitute respective ends of a cord, which is received in a channel in said hull connecting said recesses.
  • the electrodes consist of respective conductive plates.
  • the recesses are formed so as to allow maximum efficiency of distribution of the electromagnetic field generated by said electrodes when in use.
  • Figure 1 shows a side elevation of an aquatic vessel hull according to a preferred embodiment of the present invention
  • Figure 2 shows a plan view of the top of the aquatic vessel hull of Figure 1;
  • Figure 3 shows a plan view of the bottom of an aquatic vessel hull of Figure 1;
  • Figure 4 shows the hull of figure 3 with the electrode cord inserted
  • Figure 5 shows a detail of the recess for receiving the electric field signal generator
  • Figure 6 shows a cross-sectional view of the recess along the lines A-A' of Figure 3.
  • Figure 7 shows an alternative arrangement of the hull of Figure 1.
  • Figure 8 shows the hull of figure 1 in use, generating an electromagnetic field.
  • aquatic vessel refers to any suitable vessel including surfboard, surf rescue board, kayak, sailboat, rowboat, ship and water skis to be worn on the feet of a user.
  • a typical aquatic vessel hull 10 is shown in side elevation in Figure 1.
  • hull 10 is provided in hull 10 for accommodating a cord (not shown) having electrodes at either end of the cord.
  • a cord (not shown) having electrodes at either end of the cord.
  • the type of electrode cord that will be suitable for this application is the subject of a co-pending PCT Patent Application No
  • Hollowed recesses 12 and 13 accommodate the electrodes (not shown) of the electrode cord which in use, is slid through channel 11 until both electrodes are in place in respective recesses 12 and 13 and then secured in place by any appropriate means.
  • Figures 2 and 3 show these features in a top plan view and a bottom plan view respectively.
  • Figure 4 show the view of figure 3 (bottom view), but with an electrode cord 23 inserted in channel 11. Electrodes 24 and 25, being the ends of cord 23 are received in recesses 12 and 13 respectively.
  • Channel 11 may accommodate a fibre glass tube 11a (see Figure 6) through which the electrode cord may be slid. Channel 11 is then covered or filled such that the contour of the exterior surface of hull 10 is maintained.
  • Recesses 12 and 13 are shaped such that exposed electrodes are able to radiate effectively from their position within the hull. As can be seen Figure 6, a preferred range of angles for recesses 12 and 13 is 100°- 110°-
  • Hull 10 also includes a recess or cavity 14 which is sealable with lid 15.
  • Recess 14 is adapted to receive and store an electric field signal generator.
  • Such signal generators are well known and one such suitable generator is described in Australian Patent No 669806. Any suitable electric field sign d generator however, may be used.
  • Channel 14a provides a means by which the signal generator can be connected to the electrodes (see figure 5).
  • Electrodes may consist of metal plates or a conductor of any other suitable configuration, which may be attached to, or form an integral portion of the hull.
  • a portion of the front end of the hull may be made from or include a metal or other conductive plate providing a first electrode, while a portion of the back end of the hull may be made from a metal or other conductive plate, forming a second electrode.
  • Such an arrangement is shown in figure 7, in which electrode plates 20, 21 are shown incorporated within hull 10. Upon connection to a suitable signal generator, these plates may radiate the required electromagnetic field to produce a shark-deterring region within the water about the hull.
  • Figure 8 shows the hull of figure 1 incorporating the cord with electrodes housed in channels 12 and 13 (not shown), in use in a body of water 30.
  • the signal generator When activated the signal generator (not shown) causes the electrodes (not shown) to generate electromagnetic field 40 about hull 10, forming a shark-repelling region about the vessel. This reduces the risk of a shark attacking the vessel, or a person who is in the water, and near the vessel, such as a person who has fallen off or out of the vessel.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Catching Or Destruction (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Transmitters (AREA)

Abstract

A hull (10) for an aquatic vessel which provides a shark-repelling region about the vessel. The hull (10) includes two electrodes connected to an electromagnetic field signal generator, which in use, generates an electromagnetic field (40) about the vessel which repels sharks. The electrodes may be formed from the ends of an electrode cord (23), or may be formed from conductive (24, 25) plates (20, 21) mounted to, or integral with, the hull (10).

Description

IMPROVED AQUATIC VESSEL HULL
TECHNICAL FIELD
This invention relates to devices and applications of generating electromagnetic fields within a body of water to repel aquatic creatures such as sharks.
BACKGROUND TO THE INVENTION
Numerous devices are known for the purpose of repelling aquatic creatures. The majority of these devices are designed to generate an electromagnetic field in close proximity of a diver or to form a barrier or boundary in the nearby water.
Most studies are conducted on the aquatic creature sub-group of elasmobranchii, otherwise known as sharks. Most shark repelling apparatus use electromagnetic pulses, delivered into the water by submerged antennae or electrodes, to create an appropriate electromagnetic field in the vicinity of a swimmer, diver or general water recreationist.
Various types of pulse signal generators are used, the characteristics of which include a specification of signal duration, repetition rate, amplitude and pulse rise time. The value or ranges of each characteristic are carefully selected so as to create the electromagnetic field deemed most effective.
In the past, such signal generators have been disposed on the body of the swimmer or as a separate unit to be used in an area that is desired to be shark-free.
Not only are individuals at risk from being attacked by sharks, sometimes small aquatic vessels such as surfboards, kayaks, rafts and small boats can be disturbed by sharks. It is an object of the present invention to provide a means by which shark-repelling electromagnetic fields can be generated about an aquatic vessel to reduce the risk of the vessel being disturbed by sharks.
SUMMARY OF THE INVENTION
According to a first aspect of the present invention, there is provided an aquatic vessel hull adapted to support at least two electrodes connectable to an electromagnetic field signal generator, in use, the electrodes generating an electromagnetic field in a volume of water about the vessel, the electromagnetic field acting to repel selected aquatic creatures.
Preferably, the aquatic vessel hull includes at least two recesses for receiving one each of the at least two electrodes, such that the at least two electrodes do not protrude substantially beyond the upper surface of the hull.
Preferably, the aquatic vessel hull further includes a channel connecting said recesses, said channel adapted to accommodate an electrode cord terminating at each end being one of said at least two electrodes.
Preferably, the recesses are formed so as to allow maximum efficiency of distribution of the electromagnetic field generated by said electrodes when in use.
According to a second aspect of the present invention, there is provided an aquatic vessel hull incorporating at least two electrodes, connectable to an electromagnetic field signal generator, in use, the said electrodes generating an electromagnetic field in a volume of water about the aquatic vessel, said field acting to repel selected aquatic creatures.
Preferably, the electrodes do not substantially protrude beyond the surface of said hull. Preferably, the electrodes are received in corresponding recesses in said hull.
Preferably, the electrodes constitute respective ends of a cord, which is received in a channel in said hull connecting said recesses.
Alternatively, the electrodes consist of respective conductive plates.
Preferably, the recesses are formed so as to allow maximum efficiency of distribution of the electromagnetic field generated by said electrodes when in use.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 shows a side elevation of an aquatic vessel hull according to a preferred embodiment of the present invention;
Figure 2 shows a plan view of the top of the aquatic vessel hull of Figure 1;
Figure 3 shows a plan view of the bottom of an aquatic vessel hull of Figure 1;
Figure 4 shows the hull of figure 3 with the electrode cord inserted;
Figure 5 shows a detail of the recess for receiving the electric field signal generator;
Figure 6 shows a cross-sectional view of the recess along the lines A-A' of Figure 3.
Figure 7 shows an alternative arrangement of the hull of Figure 1.
Figure 8 shows the hull of figure 1 in use, generating an electromagnetic field.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT It will be understood that the phrase "aquatic vessel" refers to any suitable vessel including surfboard, surf rescue board, kayak, sailboat, rowboat, ship and water skis to be worn on the feet of a user.
A typical aquatic vessel hull 10 is shown in side elevation in Figure 1. Provided in hull 10 is channel 11 for accommodating a cord (not shown) having electrodes at either end of the cord. The type of electrode cord that will be suitable for this application is the subject of a co-pending PCT Patent Application No
PCT/ AU02/01297, the contents of which are hereby incorporated by reference. It will be appreciated however, that any other suitable electrode arrangement may be used.
Hollowed recesses 12 and 13 accommodate the electrodes (not shown) of the electrode cord which in use, is slid through channel 11 until both electrodes are in place in respective recesses 12 and 13 and then secured in place by any appropriate means.
Figures 2 and 3 show these features in a top plan view and a bottom plan view respectively.
Figure 4 show the view of figure 3 (bottom view), but with an electrode cord 23 inserted in channel 11. Electrodes 24 and 25, being the ends of cord 23 are received in recesses 12 and 13 respectively.
Channel 11 may accommodate a fibre glass tube 11a (see Figure 6) through which the electrode cord may be slid. Channel 11 is then covered or filled such that the contour of the exterior surface of hull 10 is maintained.
Recesses 12 and 13 are shaped such that exposed electrodes are able to radiate effectively from their position within the hull. As can be seen Figure 6, a preferred range of angles for recesses 12 and 13 is 100°- 110°-
Hull 10 also includes a recess or cavity 14 which is sealable with lid 15. Recess 14 is adapted to receive and store an electric field signal generator. Such signal generators are well known and one such suitable generator is described in Australian Patent No 669806. Any suitable electric field sign d generator however, may be used. Channel 14a provides a means by which the signal generator can be connected to the electrodes (see figure 5).
It is also within the concept of the present invention to provide a hull having incorporated therein electrodes which are connectable to a suitable signal generator. The electrodes may consist of metal plates or a conductor of any other suitable configuration, which may be attached to, or form an integral portion of the hull. For example, a portion of the front end of the hull may be made from or include a metal or other conductive plate providing a first electrode, while a portion of the back end of the hull may be made from a metal or other conductive plate, forming a second electrode. Such an arrangement is shown in figure 7, in which electrode plates 20, 21 are shown incorporated within hull 10. Upon connection to a suitable signal generator, these plates may radiate the required electromagnetic field to produce a shark-deterring region within the water about the hull.
Figure 8 shows the hull of figure 1 incorporating the cord with electrodes housed in channels 12 and 13 (not shown), in use in a body of water 30.
When activated the signal generator (not shown) causes the electrodes (not shown) to generate electromagnetic field 40 about hull 10, forming a shark-repelling region about the vessel. This reduces the risk of a shark attacking the vessel, or a person who is in the water, and near the vessel, such as a person who has fallen off or out of the vessel.
While the above has been described with reference to a preferred embodiment, it will be understood that further modifications and alterations may be made within the scope of the present invention.

Claims

THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS:
1. An aquatic vessel hull adapted to support at least two electrodes connectable to an electromagnetic field signal generator, in use, the electrodes generating an electromagnetic field in a volume of water about the vessel, the electromagnetic field acting to repel selected aquatic creatures.
2. An aquatic vessel hull according to claim 1, wherein said aquatic vessel hull includes at least two recesses for receiving one each of the at least two electrodes, such that the at least two electrodes do not protrude substantially beyond the surface of the hull.
3. An aquatic vessel hull according to claim 2 wherein said aquatic vessel hull further includes a channel connecting said recesses, said channel adapted to accommodate an electrode cord terminating at each end in one of said at least two electrodes.
4. An aquatic vessel hull according to claim 3 wherein said recesses are formed so as to allow maximum efficiency of distribution of the electromagnetic field generated by said electrodes when in use.
5. An aquatic vessel hull incorporating at least two electrodes, connectable to an electromagnetic field signal generator, in use, the said electrodes generating an electromagnetic field in a volume of water about the aquatic vessel, said field acting to repel selected aquatic creatures.
6. An aquatic vessel hull according to claim 5 wherein said at least two electrodes do not substantially protrude beyond the surface of said hull.
7. An aquatic vessel hull according to any one of claims 5 or 6 wherein said at least two electrodes are received in corresponding recesses in said hull.
8. An aquatic vessel hull according to claim 7 wherein said at least two electrodes constitute respective ends of a cord, which is received in a channel in said hull connecting said recesses.
9. An aquatic vessel hull according to claim 6 wherein said at least two electrodes consist of respective conductive plates.
10. An aquatic vessel hull according to claim 7 wherein said recesses are formed so as to allow maximum efficiency of distribution of the electromagnetic field generated by said electrodes when in use.
PCT/AU2003/000534 2002-05-06 2003-05-06 Improved aquatic vessel hull WO2003094370A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BRPI0309899A BRPI0309899A8 (en) 2002-05-06 2003-05-06 IMPROVED HULL OF AQUATIC VESSEL
JP2004502486A JP2005524571A (en) 2002-05-06 2003-05-06 Improved surface vessel hull
AU2003225326A AU2003225326A1 (en) 2002-05-06 2003-05-06 Improved aquatic vessel hull
US10/513,570 US20060016379A1 (en) 2002-05-06 2003-05-06 Aquatic vessel hull

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPS2142A AUPS214202A0 (en) 2002-05-06 2002-05-06 Improved aquatic vessel hull
AUPS2142 2002-05-06

Publications (1)

Publication Number Publication Date
WO2003094370A1 true WO2003094370A1 (en) 2003-11-13

Family

ID=3835715

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2003/000534 WO2003094370A1 (en) 2002-05-06 2003-05-06 Improved aquatic vessel hull

Country Status (7)

Country Link
US (1) US20060016379A1 (en)
JP (1) JP2005524571A (en)
CN (1) CN1653702A (en)
AU (2) AUPS214202A0 (en)
BR (1) BRPI0309899A8 (en)
WO (1) WO2003094370A1 (en)
ZA (1) ZA200408981B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006149275A (en) * 2004-11-29 2006-06-15 Techno Pulse:Kk Shark-repulsing apparatus for fishery
FR2979325A1 (en) * 2011-08-23 2013-03-01 Jean Rene Amany Sharks moving device, has electrified board in which electric wires are integrated and provided with small propellers, where electric wires are powered by dynamo and small propellers are pulled by waves
US9648865B2 (en) 2013-05-30 2017-05-16 Seachange Technology Holdings Pty Ltd Chondrichthyan repelling system

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7507132B2 (en) * 2003-08-28 2009-03-24 Grune Guerry L Transparent surfboard with shark locating and repelling system
JP5007578B2 (en) * 2007-02-23 2012-08-22 株式会社テクノパルス Ray repelling device
US10850816B2 (en) * 2018-05-11 2020-12-01 LightSUP Boards, LLC Stand up paddle board with window and lights
USD914120S1 (en) 2019-05-09 2021-03-23 LightSUP Boards, LLC Stand up paddle board with transparent viewing window
CN110646260A (en) * 2019-09-24 2020-01-03 大连海事大学 Three-dimensional rotating device and method based on alternating current/direct current coupling electric field
CN110877679B (en) * 2019-11-13 2021-09-17 沪东中华造船(集团)有限公司 Pre-installation process of grating plates on segments
CN112278186B (en) * 2020-10-23 2021-12-28 中船黄埔文冲船舶有限公司 Hull reinforcing ring butt joint tool

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1088429A (en) * 1964-12-31 1967-10-25 Marine Ind Inc Shark repeller
US4211980A (en) * 1977-06-27 1980-07-08 Stowell William R Method of creating an electric field for shark repellent
US4750451A (en) * 1987-02-03 1988-06-14 Smith David V Fish repelling apparatus using a plurality of series connected pulse generators to produce an optimized electric field
US5342228A (en) * 1992-05-27 1994-08-30 Brunswick Corporation Marine drive anode
US5460123A (en) * 1993-04-23 1995-10-24 The United States Of America As Represented By The Secretary Of Agriculture Electroshock repulsion of waterfowl, aquatic animals, and small mammals
EP0631721B1 (en) * 1993-06-24 1996-10-02 Natal Sharks Board Control of sharks
WO1996037099A1 (en) * 1995-05-22 1996-11-28 Natal Sharks Board Shark repellant devices
EP1000852A1 (en) * 1998-11-09 2000-05-17 Brunswick Corporation Apparatus and method for inhibiting fouling of an underwater surface
WO2003011025A1 (en) * 2001-07-27 2003-02-13 Seachange Technology Holdings Pty Ltd Shark repelling device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3164772A (en) * 1962-01-24 1965-01-05 Phillips E Hicks Portable means for repelling sharks utilizing pulse discharges through a dipole antenna
US3400582A (en) * 1967-05-08 1968-09-10 Eric S. Warner Boat speed indicator
US3822403A (en) * 1971-09-27 1974-07-02 R Hicks Apparatus and method for repelling sharks and the like
US6837182B2 (en) * 2001-07-11 2005-01-04 Hugo Leblanc Apparatus for controlling aquatic creatures

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1088429A (en) * 1964-12-31 1967-10-25 Marine Ind Inc Shark repeller
US4211980A (en) * 1977-06-27 1980-07-08 Stowell William R Method of creating an electric field for shark repellent
US4750451A (en) * 1987-02-03 1988-06-14 Smith David V Fish repelling apparatus using a plurality of series connected pulse generators to produce an optimized electric field
US5342228A (en) * 1992-05-27 1994-08-30 Brunswick Corporation Marine drive anode
US5460123A (en) * 1993-04-23 1995-10-24 The United States Of America As Represented By The Secretary Of Agriculture Electroshock repulsion of waterfowl, aquatic animals, and small mammals
EP0631721B1 (en) * 1993-06-24 1996-10-02 Natal Sharks Board Control of sharks
WO1996037099A1 (en) * 1995-05-22 1996-11-28 Natal Sharks Board Shark repellant devices
EP1000852A1 (en) * 1998-11-09 2000-05-17 Brunswick Corporation Apparatus and method for inhibiting fouling of an underwater surface
WO2003011025A1 (en) * 2001-07-27 2003-02-13 Seachange Technology Holdings Pty Ltd Shark repelling device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ICHTHOS: "Envirofacts: Great White Shark", 8 January 2001 (2001-01-08), Retrieved from the Internet <URL:http://sacoast.uwc.ac.za/education/resources/envirofacts/greatwhite.htm> *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006149275A (en) * 2004-11-29 2006-06-15 Techno Pulse:Kk Shark-repulsing apparatus for fishery
FR2979325A1 (en) * 2011-08-23 2013-03-01 Jean Rene Amany Sharks moving device, has electrified board in which electric wires are integrated and provided with small propellers, where electric wires are powered by dynamo and small propellers are pulled by waves
US9648865B2 (en) 2013-05-30 2017-05-16 Seachange Technology Holdings Pty Ltd Chondrichthyan repelling system

Also Published As

Publication number Publication date
BRPI0309899A8 (en) 2016-12-13
US20060016379A1 (en) 2006-01-26
AUPS214202A0 (en) 2002-06-06
AU2003225326A1 (en) 2003-11-17
ZA200408981B (en) 2006-01-25
JP2005524571A (en) 2005-08-18
BRPI0309899A2 (en) 2016-10-25
CN1653702A (en) 2005-08-10

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