EP4361017A1 - Verminderung von biofouling auf wasserfahrzeugen - Google Patents

Verminderung von biofouling auf wasserfahrzeugen Download PDF

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Publication number
EP4361017A1
EP4361017A1 EP22204802.7A EP22204802A EP4361017A1 EP 4361017 A1 EP4361017 A1 EP 4361017A1 EP 22204802 A EP22204802 A EP 22204802A EP 4361017 A1 EP4361017 A1 EP 4361017A1
Authority
EP
European Patent Office
Prior art keywords
electrical connector
film
hull
conductive
arrangement
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.)
Pending
Application number
EP22204802.7A
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English (en)
French (fr)
Inventor
Thomas Andersson
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.)
Epff Electrical Pipe For Fluid Transport AB
Original Assignee
Epff Electrical Pipe For Fluid Transport AB
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 Epff Electrical Pipe For Fluid Transport AB filed Critical Epff Electrical Pipe For Fluid Transport AB
Priority to EP22204802.7A priority Critical patent/EP4361017A1/de
Priority to PCT/EP2023/080236 priority patent/WO2024094622A1/en
Publication of EP4361017A1 publication Critical patent/EP4361017A1/de
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B59/00—Hull protection specially adapted for vessels; Cleaning devices specially adapted for vessels
    • B63B59/04—Preventing hull fouling

Definitions

  • the proposed technology relates to the reduction of biofouling on watercraft.
  • Biofouling is the accumulation of microorganisms, plants, algae, or small animals on surfaces exposed to water. This is a problem for watercraft that relies on a hull for buoyancy. The biofouling can increase the weight of the watercraft, thus increasing the displacement and reducing the tonnage. Biofouling is a particular problem for watercraft for transport since it can lead to a significant increase in drag.
  • Biofouling can be divided into microfouling and macrofouling.
  • the former relates to biofilm formation and bacterial adhesion and the latter relates to the attachment of larger organisms, such as seaweed and barnacles.
  • a hull arrangement for a watercraft for preventing biological growth or biofouling.
  • the arrangement comprises: a hull having an inside and an outside; an electrically conductive first film covering the outside of the hull on a first portion of the hull; a first electrical connector connecting to the conductive first film; a second electrical connector connecting to the conductive first film and spaced apart from the first electrical connector; and an electric power source connected to the first electrical connector and the second electrical connector and configured for supplying a first electric current via the first electrical connector and the second electrical connector.
  • the first film constitutes an unbroken, or uninterrupted, electrical conductor between the first electrical connector and the second electrical conductor.
  • a method for providing a hull arrangement for a watercraft for preventing biological growth or biofouling.
  • the watercraft has a hull having an inside and an outside.
  • the method comprises: applying an electrically conductive first film on the outside of the hull on a first portion of the hull; connecting a first electrical connector to the conductive first film; connecting a second electrical connector to the conductive first film spaced apart from the first electrical connector, wherein, or such that, the first film constitutes an unbroken, or uninterrupted, electrical conductor between the first electrical connector and the second electrical conductor; and connecting an electric power source to the first electrical connector and the second electrical connector, wherein the electric power source is configured for supplying a first electric current via the first electrical connector and the second electrical connector.
  • a watercraft is understood to encompass a ship, boat, or barge for transport. It is also understood to encompass structures relying on a hull for buoyancy, such as offshore semi-submersible platforms and floating production/storage/offloading systems used in oil production.
  • the hull may have a waterline and the first portion of the hull may extend below the waterline of the hull. It is understood that supplying the first electrical is supplied to the conductive first film. It is further understood that the conductive first film can conduct the first current between the first electrical connector and the second electrical connector. The conductive first film, the first electrical connector, and the second electrical connector may be positioned, or arranged, for conducting the first electric current through the conductive first film between the first electrical connector and the second electrical connector below, or at least partly below, the waterline of the hull.
  • the waterline may represent, or correspond to, a line where the hull meets a water surface when the of the watercraft is unloaded, for example without carrying passengers or cargo. Additionally, the waterline may represent, or correspond to, the line where the hull of the watercraft meets the water surface when the watercraft is at rest relative to the water surface.
  • an operation method for hull arrangement according to the first aspect of the proposed technology comprises: supplying a first electrical current via the first electrical connector and the second electrical connector using the electric power source.
  • the first film constitutes an unbroken, or uninterrupted, electrical conductor between the first electrical connector and the second electrical conductor.
  • the first film established an unbroken, or uninterrupted, electrical, or resistive, connection between the first electrical connector and the second electrical conductor.
  • the first electrical connector, the conductive first film, and the second electrical connector form, or constitute, a complete, or uninterrupted, electrical conductor. This means that the first film does not form a cathode and anode pair that together with the water surrounding the hull form an electrolytic cell. The first electric current is essentially confined to the first film. This way, corrosion of the first film is avoided.
  • the first electrical connector and the second electrical connector may connect physically, or directly, to the first film.
  • the first electrical connector, the second electrical connector, the electric power source, and the conductive first film may form part of a closed electrical circuit.
  • the shortest path in the conductive first film between the first electrical connector and the second electrical connector may pass below the waterline. It is understood that the first electrical connector and/or the second electrical connector may be positioned, or connected to the first film, above the waterline. Alternatively, the first electrical connector and/or the second electrical connector may be positioned, or connected to the first film, below the waterline.
  • the electric current inhibits microfouling and the formation of biofilm on the conductive first film. This in turn inhibits macrofouling that depends on the presence of a biofilm.
  • the electric current may also directly inhibit macrofouling.
  • the proposed technology contributes to inhibit biofouling, thus reducing the need for anti-fouling paint containing biocides.
  • the conductive first film may be a layer of electrically conductive paint.
  • the conductive paint may be an underwater hull paint containing carbon black.
  • the conductive first film may be a sheet of an electrically conductive material.
  • the sheet may be of an electrically conductive polymer containing carbon black. The carbon black contributes to improve the electrical conductivity of the first film.
  • the first and second electrical connectors may each comprise a net of metal contacting the first film. It is understood that a net encompasses a mesh and a web. Alternatively, the first and second electrical connectors may each comprise a plate of metal. For example, the net or plate may be of stainless steel. It is understood that the net or plate is operationally connected to the electric power source, for example by a cable connection forming part of the first and second electrical connectors.
  • the net or plate may be an elongated strip aligned with, or extending parallel with, the waterline of the hull.
  • the net may be at least in part, or fully, embedded in the first film, which is particularly advantageous for establishing an electrical connection if the first film is a layer of electrically conductive paint.
  • the paint may contribute to hold the net in place on the hull.
  • the plate may be fully covered by the first film, which is advantageous if the first film is a sheet.
  • the first portion of the hull may be electrically insulating, or of an electrically insulating material.
  • the hull may be a monocoque fiberglass hull. This prevents the first electric current from passing through the hull instead of through the conductive first film, thus improving the effect on the microbiological growth.
  • the first portion of the hull may be electrically conductive.
  • the hull may be a steel hull or aluminum hull.
  • the hull arrangement may further comprise: an electrically insulating first film arranged, or located, between the electrically conductive first film and the hull.
  • the proposed method may comprise prior to applying the electrically conductive first film: applying an electrically insulating first film on the outside of the hull on the first portion of the hull.
  • the insulating first film prevents the first electric current from passing through the hull instead of through the conductive first film, thus improving the effect on the microbiological growth, in particular for electrically conductive hulls. It is understood that the conductive first film is applied on top of the insulating first film.
  • the insulating first film may be an electrically insulating paint.
  • the insulating first film may be a sheet of an electrically insulating material.
  • the sheet may be of an electrically insulating polymer.
  • the hull may have a bow and a stern.
  • the first portion may extend from a point at the bow to a point at the stern.
  • the first electrical connector may be positioned at the bow and the second electrical connector may be positioned at the stern.
  • the hull may have a centerline, or keel.
  • the first portion of the hull may extend across the centerline.
  • the centerline may bisect the first portion of the hull.
  • the first electrical connector and the second electrical connector may be positioned on opposite sides of the centerline.
  • the hull arrangement according to the first aspect of the proposed technology may further comprise: an electrically conductive second film covering the outside of the hull on the first portion of the hull, wherein the conductive second film is spaced apart, or disjoint, from the conductive first film; a third electrical connector connecting to the conductive second film; and a fourth electrical connector connecting to the conductive second film and spaced apart from the third electrical connector.
  • the electric power source is connected to the third electrical connector and the fourth electrical connector and configured for supplying a second electric current via the third electrical connector and the fourth electrical connector. It is understood that the first film and the second film may be spaced apart along the hull. This means that the first film and the second film are not overlapping.
  • the method according to the second aspect of the proposed technology may further comprise: applying an electrically conductive second film on the outside of the hull on the second portion of the hull; connecting a third electrical connector to the conductive second film, connecting a fourth electrical connector to the conductive second film and spaced apart from the third electrical connector, wherein, or such that, the second film constitutes an unbroken, or uninterrupted, electrical conductor between the third electrical connector and the fourth electrical conductor; and connecting the electric power source to the third electrical connector and the fourth electrical connector, wherein the electric power source is configured for supplying a second electric current via the third electrical connector and the fourth electrical connector.
  • the second portion of the hull may extend below the waterline of the hull.
  • the conductive second film, the third electrical connector, and the fourth electrical connector may be positioned, or arranged, for conducting the second electric current through the conductive second film between the third electrical connector and the fourth electrical connector below, or at least partly below, the waterline of the hull.
  • the conductive second film is spaced apart, or disjoint, from the conductive first film. This means that the second portion of the hull is spaced apart, or disjoint, from the conductive first portion of the hull.
  • the conductive second film allows for larger ship hulls to be covered with a more even distribution of electric current across the hull.
  • the conductive second film may have any of the features described above for the conductive first film.
  • the conductive second film may be a layer of conductive paint.
  • the third electrical connector and the fourth electrical connector may have any of the features described above for the first electrical connector and the second electrical connector, respectively.
  • the electric power source may be configured to cooperate with the conductive second film, the third electrical connector, and the fourth electrical connector as specified above for the conductive first film, the first electrical connector, and the second electrical connector.
  • the second portion of the hull may be electrically insulating, or of an electrically insulating material.
  • the second portion of the hull may be electrically conductive.
  • the hull arrangement may further comprise: an electrically insulating second film arranged, or located, between the electrically conductive second film and the hull.
  • the proposed method may comprise prior to applying the electrically conductive second film: applying an electrically insulating second film on the outside of the hull on the second portion of the hull.
  • the insulating second film may have any of the features described above for the insulating first film.
  • the insulating second film may be a layer of insulating paint.
  • the electric power source may be configured for alternating between supplying the first electric current via the first electrical connector and the second electrical connector and supplying the second electric current via the third electrical connector and the fourth electrical connector. This means that electric power source does not supply the first electric current and the second electric current at the same time. This prevents electrical interactions, for example by saltwater acting as an electrolyte, between the first film and the second film that could cause the electric current to traverse an unintended path. In extension, this allows for the first film and the second film to be positioned closer to one another, improving the coverage of the hull.
  • the first electrical connector establishes a first connection to the conductive first film
  • the second electrical connector establishes a second connection to the conductive first film
  • the third electrical connector establishes a third connection to the conductive second film
  • the fourth electrical connector establishes a fourth connection to the conductive second film.
  • the first connection and the third connection may be closer to one another than the first connection and the second connection.
  • the second connection and the fourth connection may be closer to one another than the first connection and the second connection.
  • the first electric current may be a direct current.
  • the second electric current may be a direct current.
  • the electric power source may be configured to establish the same electric polarity for the first electrical connector and the third electrical connector.
  • the electric power source may be configured to establish the same electric polarity for the second electrical connector and the fourth electrical connector. This contributes to reduce electrolysis between the first film and the second film if both are supplied with a current at the same time, and in extension corrosion is reduced.
  • the first electric current may be an alternating current.
  • the second electric current may be an alternating current.
  • the alternating current may have a frequency between 0.5 kHz and 10 kHz, or between 1 kHz and 5 kHz.
  • the first electric current and the second electric current may be in phase. This contributes to reduce electrolysis between the first film and the second film.
  • the electric power source may be configured for supplying a pulsed, or intermittent, electric current.
  • the pulses may have a combined pulse length over a period of time that is equal to or less than 50%, less than 25%, or less than 10% of the length of the period.
  • the first electric current may be below 10 mA, below 1 mA, between 0.1 mA and 1 mA, or between 0.3 mA and 0.7 mA.
  • the first electric current may be supplied at a potential difference between the first electrical connector and the second electrical connector that is below 50 V, below 10 V, below 1.5 V, below 0.5V.
  • a boat 10 is shown in Fig. 1 having an embodiment of the proposed hull arrangement 12.
  • the boat 10 has a hull 14 forming part of the hull arrangement 12.
  • the hull 14 is a monocoque fiberglass hull, which means that it is electrically insulating.
  • the hull 14 has an inside, an outside, and a waterline 16 corresponding the line where the hull 14 meets a water surface when the of the boat 10 is unloaded.
  • An electrically conductive first film 18 covers a first portion on the outside of the hull 14.
  • the conductive first film 18 is a layer of electrically conductive paint that has been applied on the hull 14, as shown in Fig. 4a .
  • the conductive first film 18 extends from above to below the waterline 16.
  • a first electrical connector 20 and a second electrical connector 22 are physically connected to the conductive first film 18.
  • the hull 14 has a bow and a stern and the first portion extends from a point at the bow to a point at the stern.
  • the first electrical connector 20 is positioned at the bow and connect to the conductive first film 18 above the waterline 16, as shown in Fig. 3a .
  • the second electrical connector 22 is positioned at the stern and connected to the conductive first film 18 below the waterline 16, as shown in Fig. 3b . This means that the first electrical connector 20 and the second electrical connector 22 are spaced apart. They are positioned such that the shortest path in the conductive first film 18 between the first electrical connector 20 and the second electrical connector 22 passes below the waterline 16.
  • An electric power source 24 is connected to the first electrical connector 20 and the second electrical connector 22 and is configured for supplying a first electric current via the first electrical connector 20 and the second electrical connector 22.
  • the first electric current is a direct current below 10 mA and is supplied at a potential difference between the first electrical connector 20 and the second electrical connector 22 that is below 50 V.
  • the electric power source 24 is configured to supply an intermittent electric current with pulse lengths of 5 min separated by gaps of 60 min.
  • the conductive first film 18, the first electrical connector 20, and the second electrical connector 22 are positioned such that the first electric current will pass through the conductive first film 18 between the first electrical connector 20 and the second electrical connector 22 at least partly below the waterline 16 of the hull 14.
  • the conductive first film 18 constitutes an unbroken, or uninterrupted, electrical conductor between the first electrical connector 20 and the second electrical conductor 22.
  • a ship 10 is shown in Figs. 2a and 2b with an alternative embodiment of the proposed hull arrangement 12.
  • the ship 10 has a hull 14 forming part of the hull arrangement 12.
  • the hull 14 is a steel hull, which means that it is electrically conductive.
  • the hull 14 has an inside, an outside, and a waterline 16 corresponding the line where the hull 14 meets a water surface when the of the ship 10 is unloaded.
  • An electrically conductive first film 18 covers a first portion on the outside of the hull 14 and an electrically conductive second film 28 covers a first portion on the outside of the hull 14.
  • the conductive first film 18 and the conductive second film 28 are spaced apart and disjoint.
  • Each of the conductive first film 18 and the conductive second film 28 is a sheet of an electrically conductive polymer that has been applied on the hull 14 and extends from above to below the waterline 16.
  • a first electrical connector 20 and a second electrical connector 22 are physically connected to the conductive first film 18.
  • a third electrical connector 30 and a fourth electrical connector 32 are physically connected to the conductive second film 28.
  • the hull 14 has a centerline 26 and the first portion and the second portion extend across the centerline and the centerline 26 bisects the first portion and the second portion.
  • the first electrical connector 20 and the third electrical connector 30 are connected to the conductive first film 18 and the conductive second film 28 above the waterline 16 on the starboard side, and the second electrical connector 22 and the fourth electrical connector 32 are connected to the conductive first film 18 and the conductive second film 28 positioned above the above the waterline 16 on the port side.
  • the first electrical connector 20 and the third electrical connector 30 are positioned closer to one another than the first electrical connector 20 and the second electrical connector, and the second electrical connector 22 and the fourth electrical connector 32 are positioned closer to one another than the first electrical connector 20 and the second electrical connector 22.
  • connection between first electrical connector 20 and the conductive first film 18 and the connection between and the third electrical connector 30 and the conductive second film 28 are closer to one another than the connection between the first electrical connector 20 and the conductive first film 18 and the connection between the second electrical connector and the conductive first film 18.
  • the connection between the second electrical connector 22 and the conductive first film 18 and the connection between the fourth electrical connector 32 and the conductive second film 28 are closer to one another than the connection between the first electrical connector 20 and the conductive first film 18 and the connection between the second electrical connector 22 and the conductive first film 18.
  • the hull arrangement 12 further has an electrically insulating first film 34 arranged between the electrically conductive first film 18 and the hull 14. It further has an electrically insulating second film 36 arranged between the electrically conductive second film 28 and the hull 14.
  • Each of the insulating first film 34 and the insulating second film 28 is a sheet of an electrically insulating polymer that has been applied on the first portion and the second portion of the hull 14 prior to applying the electrically conductive first film 18 and the electrically conductive second film 28.
  • the corresponding arrangement is shown in Fig. 5b . This inhibits a current in the conductive first film 18 and the conductive second film 28 from passing to the steel hull 14.
  • An electric power source 24 is connected to the first electrical connector 20, the second electrical connector 22, the third electrical connector 30, the fourth electrical connector 22.
  • the power source 24 is configured for supplying a first electric current via the first electrical connector 20 and the second electrical connector 22, and a second electric current via the third electrical connector 30 and the fourth electrical connector 32.
  • the first electrical connector 20, the second electrical connector 22, the electric power source 24, and the conductive first film 18 form part of a closed electrical circuit.
  • the third electrical connector 30, the fourth electrical connector 32, the electric power source 24, and the conductive second film 28 form part of another closed electrical circuit.
  • the electric power source 24 is configured to operate in three modes.
  • the first electric current and the second electric current are alternating currents below 10 mA and having a frequency between 0.5 kHz and 10 kHz.
  • the first current is supplied at a potential between the first electrical connector 20 and the second electrical connector 22 below 1.5 V.
  • the second electric current is supplied at a potential between the third electrical connector 30 and the fourth electrical connector 32 below 1.5 V.
  • the electric power source 24 is configured for alternating between supplying the first electric current and supplying the second electric current.
  • the first electric current and the second electric current are direct currents below 10 mA and supplied at a potential difference below 50 V between the first electrical connector 20 and the second electrical connector 22 and between the third electrical connector 30 and the fourth electrical connector 32.
  • the electric power source 24 supplies an intermittent electric current with pulse lengths of that is an order of magnitude smaller than the separating gaps. It is further configured to establish the same electric polarity for the first electrical connector 20 and the third electrical connector 30 and for the second electrical connector 22 and the fourth electrical connector 32.
  • Figs. 3a and 3b schematically illustrate two different positions of an electrical connector 20, 22, 30, or 32.
  • the electrical connector 20, 22, 30, or 32 has a net 38 of stainless steel that is connected to the electric power source 24 by a cable 42.
  • the electrical connector 20, 22, 30, or 32 has a plate 40 of stainless steel that is connected to the electric power source 24 by a cable 42.
  • the net 38 and plate 40 contact the conductive film 18, 28 and allows a current to flow between the electrical connector 20, 22, 30, or 32 and the conductive film 18, 28.
  • the net 38 and plate 40 are elongated strips aligned with the waterline 16 of the hull 14.
  • the net 38 is above the waterline, which means that the electrical connector 20, 22, 30, or 32 connects to the conductive film 18, 20 above the waterline 16.
  • the plate 40 is below the waterline, which means that the electrical connector 20, 22, 30, or 32 connects to the conductive film 18, 20 below the waterline 16.
  • Figs. 4a and 4b schematically illustrate side views of embodiments with an electrically insulating hull 14.
  • the electrical connector 20, 22, 30, or 32 has a net 38 of stainless steel connected to the electric power source 24 by a cable 42.
  • the conductive film 18, 20 is an electrically conductive paint applied directly on the hull 14 and in which the net 38 is embedded.
  • the electrical connector 20, 22, 30, or 32 has a plate 40 of stainless steel connected to the electric power source 24 by a cable 42.
  • the conductive film 18, 20 is a sheet of an electrically conductive polymer applied directly on the hull 14 with the plate sandwiched between the conductive film 18, 20 and the hull.
  • Figs. 5a and 5b each schematically illustrate side views of an embodiment with an electrically conductive hull 14.
  • an electrically insulating film 34, 36 in the form of an electrically insulating paint is applied on the hull.
  • the electrical connector 20, 22, 30, or 32 has a net 38 of stainless steel connected to the electric power source 24 by a cable 42.
  • the conductive film 18, 20 is an electrically conductive paint applied on the insulating film 34, 36 and the net 38 is embedded in the conductive film 18, 20.
  • an electrically insulating film 34, 36 in the form of a sheet of an electrically insulating polymer is applied on the hull 14.
  • the electrical connector 20, 22, 30, or 32 has a plate 40 of stainless steel connected to the electric power source 24 by a cable 42.
  • the conductive film 18, 20 is a sheet of an electrically conductive polymer applied on the insulating film 34, 36 and the plate 40 is sandwiched between the conductive film 18, 20 and the insulating film.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Prevention Of Electric Corrosion (AREA)
EP22204802.7A 2022-10-31 2022-10-31 Verminderung von biofouling auf wasserfahrzeugen Pending EP4361017A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP22204802.7A EP4361017A1 (de) 2022-10-31 2022-10-31 Verminderung von biofouling auf wasserfahrzeugen
PCT/EP2023/080236 WO2024094622A1 (en) 2022-10-31 2023-10-30 Reduction of biofouling on watercraft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22204802.7A EP4361017A1 (de) 2022-10-31 2022-10-31 Verminderung von biofouling auf wasserfahrzeugen

Publications (1)

Publication Number Publication Date
EP4361017A1 true EP4361017A1 (de) 2024-05-01

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ID=84047693

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22204802.7A Pending EP4361017A1 (de) 2022-10-31 2022-10-31 Verminderung von biofouling auf wasserfahrzeugen

Country Status (2)

Country Link
EP (1) EP4361017A1 (de)
WO (1) WO2024094622A1 (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59124489A (ja) * 1982-12-30 1984-07-18 Mitsui Eng & Shipbuild Co Ltd 船体外板の防汚方法
EP0369557A1 (de) * 1988-11-14 1990-05-23 Mitsubishi Jukogyo Kabushiki Kaisha Vorrichtung zum Schutz gegen die biologische Verunreinigung von im Meerwasser schwimmenden Objekten
JPH11104649A (ja) * 1997-09-30 1999-04-20 Kem:Kk 海中構造物に海洋生物が付着するのを防止する装置
WO2006019464A1 (en) * 2004-07-16 2006-02-23 Brunswick Corporation Multilayered submersible structure with fouling inhibiting characteristic
WO2009113893A1 (ru) * 2008-02-29 2009-09-17 Matveev Vladimir Anatolevich Защитное покрытие подводной поверхности судов от биообрастаний
JP2014133729A (ja) * 2012-09-26 2014-07-24 Yoshiaki Nagaura 漁網、又は漁具、又は船底、又は浮標、又は浴室、又は浴場での細菌類の菌類、又は微生物、フジツボ、パール貝、ワカメなどの付着防止、及びその付着防止方法。
EP3495055A1 (de) * 2017-12-06 2019-06-12 Technip France Unterwasserstruktur und zugehöriges verfahren

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59124489A (ja) * 1982-12-30 1984-07-18 Mitsui Eng & Shipbuild Co Ltd 船体外板の防汚方法
EP0369557A1 (de) * 1988-11-14 1990-05-23 Mitsubishi Jukogyo Kabushiki Kaisha Vorrichtung zum Schutz gegen die biologische Verunreinigung von im Meerwasser schwimmenden Objekten
JPH11104649A (ja) * 1997-09-30 1999-04-20 Kem:Kk 海中構造物に海洋生物が付着するのを防止する装置
WO2006019464A1 (en) * 2004-07-16 2006-02-23 Brunswick Corporation Multilayered submersible structure with fouling inhibiting characteristic
WO2009113893A1 (ru) * 2008-02-29 2009-09-17 Matveev Vladimir Anatolevich Защитное покрытие подводной поверхности судов от биообрастаний
JP2014133729A (ja) * 2012-09-26 2014-07-24 Yoshiaki Nagaura 漁網、又は漁具、又は船底、又は浮標、又は浴室、又は浴場での細菌類の菌類、又は微生物、フジツボ、パール貝、ワカメなどの付着防止、及びその付着防止方法。
EP3495055A1 (de) * 2017-12-06 2019-06-12 Technip France Unterwasserstruktur und zugehöriges verfahren

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