EP0061645A1 - Floating refuse-collecting ship - Google Patents

Floating refuse-collecting ship Download PDF

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Publication number
EP0061645A1
EP0061645A1 EP82102113A EP82102113A EP0061645A1 EP 0061645 A1 EP0061645 A1 EP 0061645A1 EP 82102113 A EP82102113 A EP 82102113A EP 82102113 A EP82102113 A EP 82102113A EP 0061645 A1 EP0061645 A1 EP 0061645A1
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EP
European Patent Office
Prior art keywords
wing
ship
hull
recuperator
water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP82102113A
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German (de)
French (fr)
Inventor
Albert Bonazzi
Bernard Valibouse
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.)
Alsthom Atlantique SA
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Alsthom Atlantique SA
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 Alsthom Atlantique SA filed Critical Alsthom Atlantique SA
Publication of EP0061645A1 publication Critical patent/EP0061645A1/en
Withdrawn legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
    • E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
    • E02B15/046—Collection of oil using vessels, i.e. boats, barges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/32—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for for collecting pollution from open water

Definitions

  • the present invention relates to a floating product recovery vessel.
  • Such a device may for example have walls forming a funnel, which block the surface layer of water and protrude above the surface of the water, to push this layer directly towards the recuperators.
  • concentration devices arranged in front of the recuperators to attract floating products to these recuperators.
  • Such a device may for example have walls forming a funnel, which block the surface layer of water and protrude above the surface of the water, to push this layer directly towards the recuperators.
  • Such a device is described in document US-A No. 3,701,430 (Tuttle).
  • the object of the present invention is to facilitate the recovery of floating products by attracting the layer of surface water towards the plating of the boat.
  • the angle of incidence of the wing is between 15 ° and 35 °
  • the span of the wing is between half and double its cord
  • the distance from the trailing edge of the wing at the recuperator is at least equal to half the span of the wing, so as to allow said lateral call for surface water to bring the floating products from the end of the wing to in the recuperator
  • the wing is in the shape of a delta wing, the leading edge of which progressively deviates laterally from the hull from the bow of the ship so as to favor the formation of a vortex with a substantially horizontal axis along relative to the ship, this vortex taking the water below the level of the wing behind it, bringing it up to the surface on the outer edge of the wake of the wing and bringing it back to the hull on the surface in the wake of the wing.
  • a first floating product recovery vessel provided with a device is intended for the collection of polluting products such as hydrocarbons.
  • Its hull is shown in 2. It has two recuperators 4 arranged symmetrically on both sides of the hull, and sucking a surface layer of water, on an adjustable height such as for example 10 cm.
  • Two devices for attracting floating products are arranged symmetrically on either side of the bow of the ship. Each is in the form of a plane wing 6 in "delta" shape placed in positive incidence.
  • the wing may have a rectangular shape which is that of the wing 16 fixed on the hull 12 of a second vessel equipped with recuperators 14 (FIGS. 4 to 6).
  • means are provided for removing the wing (6) so as to allow an easier advance of the ship when there are no floating products to attract against the hull.
  • these means are constituted by a lifting chain 20, the delta wing 6 being provided with hinges 24 arranged near the hull and making it possible to raise it to an almost vertical position represented in 6 ′.
  • a pole 22 which is articulated on the shell 2 and the other end of which engages a stop provided on the upper surface of the wing.
  • the pole can be raised using a second chain 26.
  • an interior jack allows the rectangular wings 16 to be returned horizontally to the shell 12.
  • the efficiency of the device according to the invention is illustrated in FIG. 1 by lines 10 in dashed lines representing lines of current on the surface.
  • the horizontal bandwidth of recovery efficiency can thus be increased, for example, to twice the width of the ship.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Cleaning Or Clearing Of The Surface Of Open Water (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

A delta wing (6) is fastened at a positive angle of incidence on either side of the bow of the ship (2) below the water line, to generate an eddy which conveys the surface water back towards recuperators (4) located at the rear of the wing. The invention is used for combating sea pollution. <IMAGE>

Description

La présente invention concerne un navire de récupération de produits flottants.The present invention relates to a floating product recovery vessel.

Elle s'applique notamment à la récupération des hydrocarbures ou autres produits polluants flottant en mer, ceci à l'aide d'un navire muni, sur la ligne de flottaison, de récupérateurs aspirant la couche superficielle de l'eau. L'eau aspirée est débarrassée des hydrocarbures puis renvoyée à la mer. Les hydrocarbures concentrés ainsi récupérés sont évacués ou stockés par divers moyens.It applies in particular to the recovery of hydrocarbons or other polluting products floating at sea, this using a ship provided, on the waterline, with recuperators sucking the surface layer of the water. The aspirated water is freed from the hydrocarbons and then returned to the sea. The concentrated hydrocarbons thus recovered are evacuated or stored by various means.

Pour que cette récupération soit efficace il convient que les hydrocarbures flottants soient attirés vers l'entrée des récupérateurs. Ils le sont à courte distance grâce à la puissance d'aspiration de ces dispositifs. Mais cette puissance reste généralement insuffisante pour que l'aspiration soit efficace sur une grande distance. Elle ne peut être augmentée beaucoup sans entraîner l'aspiration inutile des couches plus profondes de l'eau, qui ne contiennent pas d'hydrocarbures.For this recovery to be effective, floating oil must be attracted to the entrance to the recuperators. They are so at close range thanks to the suction power of these devices. However, this power is generally insufficient for the suction to be effective over a long distance. It cannot be increased much without causing unnecessary suction of the deeper layers of water, which do not contain hydrocarbons.

De plus, l'avance d'un bateau tend à provoquer l'écartement latéral des couches de surface par rapport à la carène par remontée des courants le long des côtés de la coque. L'efficacité de la récupération des produits polluants flottant le long de la coque s'en trouve diminuée, et la collecte n'intéresse qu'une fraction de l'ordre de la moitié de la largeur balayée par le bateau.In addition, the advance of a boat tends to cause the lateral separation of the surface layers with respect to the hull by rising currents along the sides of the hull. The efficiency of the recovery of pollutants floating along the hull is reduced, and the collection only concerns a fraction of the order of half the width swept by the boat.

C'est pourquoi on a proposé de munir un tel bateau de dispositifs de concentration disposés en avant des récupérateurs pour attirer les produits flottants vers ces récupérateurs. Un tel dispositif peut par exemple présenter des parois formant entonnoir, qui barrent la couche superficielle de l'eau et dépassent au-dessus de la surface de l'eau, pour pousser directement cette couche vers les récupérateurs. Un tel dispositif est décrit dans le document US-A n° 3 701 430 (Tuttle).This is why it has been proposed to provide such a boat with concentration devices arranged in front of the recuperators to attract floating products to these recuperators. Such a device may for example have walls forming a funnel, which block the surface layer of water and protrude above the surface of the water, to push this layer directly towards the recuperators. Such a device is described in document US-A No. 3,701,430 (Tuttle).

La présente invention a pour but de faciliter la récupération des produits flottants en attirant la couche d'eau superficielle vers les bordés du bateau.The object of the present invention is to facilitate the recovery of floating products by attracting the layer of surface water towards the plating of the boat.

Elle a pour objet un navire de récupération de produits flottants, ce navire comportant :

  • - une coque munie d'un récupérateur latéral aspirant la couche superficielle de l'eau au contact de la coque pour permettre la récupération des produits flottants,
  • - et un dispositif de concentration pour attirer ces produits vers ce récupérateur,
  • - caractérisé par le fait que ce dispositif de concentration comporte au moins une aile fixée latéralement en saillie sur la coque du navire sous la ligne de flottaison en avant de la zone d'aspiration du récupérateur, cette aile comportant un bord d'attaque plus haut que son bord de fuite de manière à présenter, lorsque le navire avance, une portance positive qui tend à abaisser la pression de l'eau au-dessus de l'extrados de l'aile, et qui provoque ainsi à l'arrière de l'aile, un appel latéral d'eau superficielle de l'extérieur vers le sillage de l'aile et vers la coque du navire, le bord d'attaque de l'aile étant situé à une profondeur supérieure à celle dont s'enfoncent les produits flottants à attirer.
Its subject is a floating product recovery vessel, this vessel comprising:
  • - a hull fitted with a lateral recuperator aspirating the surface layer of water in contact with the hull to allow the recovery of floating products,
  • - and a concentration device to attract these products to this recuperator,
  • - characterized by the fact that this concentration device comprises at least one wing fixed laterally projecting from the hull of the ship under the water line in front of the recovery zone of the recuperator, this wing comprising a higher leading edge as its trailing edge so as to present, when the ship is advancing, a positive lift which tends to lower the pressure of the water above the upper surface of the wing, and which therefore causes at the rear of the 'wing, a lateral call for surface water from the outside towards the wake of the wing and towards the hull of the ship, the leading edge of the wing being situated at a depth greater than that of which the floating products to attract.

Selon des dispositions avantageuses, l'angle d'incidence de l'aile est compris entre 15° et 35°, l'envergure de l'aile est comprise entre la moitié et le double de sa corde, la distance du bord de fuite de l'aile au récupérateur est au moins égale à la moitié de l'envergure de l'aile, de manière à permettre audit appel latéral d'eau superficielle d'amener les produits flottants à partir de l'extrémité de l'aile jusqu'au récupérateur, l'aile est en forme d'aile delta dont le bord d'attaque s'écarte latéralement progressivement de la coque à partir de la proue du navire de manière à favoriser la formation d'un tourbillon à axe sensiblement horizontal longitudinal par rapport au navire, ce tourbillon prenant l'eau au-dessous du niveau de l'aile en arrière de celle-ci, la faisant remonter à la surface sur le bord extérieur du sillage de l'aile et la ramenant vers la coque en surface dans le sillage de l'aile.According to advantageous arrangements, the angle of incidence of the wing is between 15 ° and 35 °, the span of the wing is between half and double its cord, the distance from the trailing edge of the wing at the recuperator is at least equal to half the span of the wing, so as to allow said lateral call for surface water to bring the floating products from the end of the wing to in the recuperator, the wing is in the shape of a delta wing, the leading edge of which progressively deviates laterally from the hull from the bow of the ship so as to favor the formation of a vortex with a substantially horizontal axis along relative to the ship, this vortex taking the water below the level of the wing behind it, bringing it up to the surface on the outer edge of the wake of the wing and bringing it back to the hull on the surface in the wake of the wing.

A l'aide des figures schématiques ci-jointes, on va décrire ci-après, à titre non limitatif, comment l'invention peut être mise en oeuvre.Using the attached schematic figures, we will describe below, without limitation, how the invention can be implemented.

  • La figure 1 représente une vue de dessus d'un premier navire récupérateur équipé selon l'invention, avec une aile delta.FIG. 1 represents a top view of a first recovery vessel equipped according to the invention, with a delta wing.
  • Les figures 2 et 3 représentent des vues respectivement de côté et de face de ce même navire.Figures 2 and 3 show respectively side and front views of the same ship.
  • Les figures 4, 5 et 6 représentent des vues respectivement de côté, de dessus et de face d'un deuxième navire équipé selon l'invention avec une aile rectangulaire.Figures 4, 5 and 6 show respectively side, top and front views of a second vessel equipped according to the invention with a rectangular wing.
  • Les figures 7 et 8 représentent des vues de face respectivement du premier et du deuxième de ces mêmes navires, montrant des dispositifs de retrait des ailes.Figures 7 and 8 show front views respectively of the first and second of these same ships, showing devices for removing the wings.

Conformément aux figures 1 à 3, un premier navire de récupération de produits flottants muni d'un dispositif est destiné au ramassage de produits polluants tels que des hydrocarbures. Sa coque est représentée en 2. Il comporte deux récupérateurs 4 disposés symétriquement des deux côtés de la coque, et aspirant une couche superficielle de l'eau, sur une hauteur réglable telle que par exemple 10 cm. Deux dispositifs pour attirer les produits flottants sont disposés symétriquement de part et d'autre de l'étrave du navire. Chacun se présente sous la forme d'une aile 6 plane en forme "delta" placée en incidence positive.In accordance with FIGS. 1 to 3, a first floating product recovery vessel provided with a device is intended for the collection of polluting products such as hydrocarbons. Its hull is shown in 2. It has two recuperators 4 arranged symmetrically on both sides of the hull, and sucking a surface layer of water, on an adjustable height such as for example 10 cm. Two devices for attracting floating products are arranged symmetrically on either side of the bow of the ship. Each is in the form of a plane wing 6 in "delta" shape placed in positive incidence.

L'efficacité optimale de cette aile est obtenue lorsque l'angle d'incidence i est compris entre 15° et 35° (voir fig.2) et l'angle de flèche F entre 20° et 60°, cet angle étant celui du bord d'attaque de l'aile avec l'axe longitudinal 8 du navire. Quoique cela ne semble pas préférable l'aile peut présenter une forme rectangulaire qui est celle de l'aile 16 fixée sur la coque 12 d'un deuxième navire équipé de récupérateurs 14 (figures 4 à 6).The optimum efficiency of this wing is obtained when the angle of incidence i is between 15 ° and 35 ° (see fig. 2) and the angle of arrow F between 20 ° and 60 °, this angle being that of leading edge of the wing with the longitudinal axis 8 of the ship. Although this does not seem preferable, the wing may have a rectangular shape which is that of the wing 16 fixed on the hull 12 of a second vessel equipped with recuperators 14 (FIGS. 4 to 6).

L'efficacité optimale de cette aile rectangulaire semble se situer pour un angle d'incidence compris entre 150 et 35° et un allongement (rapport de l'envergure à la corde) compris entre 0,5 et 2.The optimal efficiency of this rectangular wing seems to lie at an angle of incidence between 15 0 and 35 ° and an elongation (ratio of the span to the cord) between 0.5 and 2.

On prévoit avantageusement des moyens de retrait de l'aile (6) de manière à permettre une avance plus facile du navire lorsqu'il n "y a pas de produits flottants à attirer contre la coque.Advantageously, means are provided for removing the wing (6) so as to allow an easier advance of the ship when there are no floating products to attract against the hull.

Sur la figure 7 ces moyens sont constitués par une chaîne de relevage 20, l'aile delta 6 étant munie de charnières 24 disposées près de la coque et permettant de la relever jusqu'à une position presque verticale représentée en 6'.In FIG. 7, these means are constituted by a lifting chain 20, the delta wing 6 being provided with hinges 24 arranged near the hull and making it possible to raise it to an almost vertical position represented in 6 ′.

Le maintien de l'aile en position basse est assuré par un tangon 22 qui est articulé sur la coque 2 et dont l'autre extrémité vient s'engager sur une butée prévue sur l'extrados de l'aile. Le tangon est relevable à l'aide d'une seconde chaîne 26.Maintaining the wing in the low position is ensured by a pole 22 which is articulated on the shell 2 and the other end of which engages a stop provided on the upper surface of the wing. The pole can be raised using a second chain 26.

Sur la figure 8 un vérin intérieur non représenté permet de rentrer horizontalement les ailes rectangulaires 16 dans la coque 12.In FIG. 8, an interior jack, not shown, allows the rectangular wings 16 to be returned horizontally to the shell 12.

L'efficacité du dispositif selon l'invention est illustrée sur la figure 1 par des lignes 10 en trait tireté représentant des lignes de courant en surface. La largeur de bande horizontale d'efficacité des récupérateurs peut ainsi être portée par exemple au double de la largeur du navire.The efficiency of the device according to the invention is illustrated in FIG. 1 by lines 10 in dashed lines representing lines of current on the surface. The horizontal bandwidth of recovery efficiency can thus be increased, for example, to twice the width of the ship.

Claims (6)

1/ Navire de récupération de produits flottants, ce navire comportant : - une coque (2) munie d'un récupérateur latéral (4) aspirant la couche superficielle de l'eau au contact de la coque pour permettre la récupération des produits flottants, - et un dispositif de concentration pour attirer ces produits vers ce récupérateur, - caractérisé par le fait que ce dispositif de concentration comporte au moins une aile (6) fixée latéralement en saillie sur la coque du navire sous la ligne de flottaison en avant de la zone d'aspiration du récupérateur, cette aile comportant un bord d'attaque plus haut que son bord de fuite de manière à présenter, lorsque le navire avance, une portance positive qui tend à abaisser la pression de l'eau au-dessus de l'extrados de l'aile, et qui provoque ainsi à l'arrière de l'aile, un appel latéral d'eau superficielle de l'extérieur vers le sillage de l'aile et vers la coque (2) du navire, le bord d'attaque de l'aile étant situé à une profondeur supérieure à celle dont s'enfoncent les produits flottants à attirer. 1 / Floating products recovery vessel, this vessel comprising: - a hull (2) provided with a lateral recuperator (4) sucking the surface layer of water in contact with the hull to allow the recovery of floating products, - and a concentration device to attract these products to this recuperator, - characterized by the fact that this concentration device comprises at least one wing (6) fixed laterally projecting from the hull of the ship under the waterline in front of the recovery zone of the recuperator, this wing comprising an edge attacks higher than its trailing edge so as to present, when the ship is advancing, a positive lift which tends to lower the pressure of the water above the upper surface of the wing, and which thus causes the aft of the wing, a lateral call for surface water from the outside towards the wake of the wing and towards the hull (2) of the ship, the leading edge of the wing being situated at a depth greater than that of floating products to attract. 2/ Navire selon la revendication 1, caractérisé par le fait que l'angle d'incidence (i) de l'aile (6) est compris entre 15° et 35°.2 / Vessel according to claim 1, characterized in that the angle of incidence (i) of the wing (6) is between 15 ° and 35 °. 3/ Navire selon la revendication 1, caractérisé par le fait que l'envergure de l'aile est comprise entre la moitié et le double de sa corde.3 / Ship according to claim 1, characterized in that the span of the wing is between half and double its rope. 4/ Navire selon la revendication 3, caractérisé par le fait que la distance du bord de fuite de l'aile (6) au récupérateur (4) est au moins égale à la moitié de l'envergure de l'aile, de manière à permettre audit appel latéral d'eau superficielle d'amener les produits flottants à partir de l'extrémité de l'aile jusqu'au récupérateur.4 / Vessel according to claim 3, characterized in that the distance from the trailing edge of the wing (6) to the recuperator (4) is at least equal to half the span of the wing, so as to allow said lateral surface water call to bring the floating products from the end of the wing to the recuperator. 5/ Navire selon la revendication 1, caractérisé par le fait que l'aile (6) est en forme d'aile delta dont le bord d'attaque s'écarte latéralement progressivement de la coque (2) à partir de la proue du navire de manière à favoriser la formation d'un tourbillon à axe sensiblement horizontal longitudinal par rapport au navire, ce tourbillon prenant l'eau au-dessous du niveau de l'aile (6) en arrière de celle-ci, la faisant remonter à la surface sur le bord extérieur du sillage de l'aile et la ramenant vers la coque (2) en surface dans le sillage de l'aile.5 / Vessel according to claim 1, characterized in that the wing (6) is in the form of a delta wing whose leading edge gradually moves laterally away from the hull (2) from the bow of the ship so as to favor the formation of a vortex with a substantially horizontal axis longitudinal to the ship, this vortex taking on water below the level of the wing (6) behind the latter, causing it to rise to the surface on the outer edge of the wing wake and bringing it towards the hull (2) on the surface in the wake of the wing. 6/ Navire selon la revendication 1, caractérisé par le fait qu'il comporte en outre des moyens (20) de retrait de l'aile (6) de manière à permettre une avance plus facile du navire lorsqu'il n'y a pas de produits flottants à attirer contre la coque.6 / ship according to claim 1, characterized in that it further comprises means (20) for removing the wing (6) so as to allow easier advance of the ship when there is no floating products to attract against the hull.
EP82102113A 1981-03-19 1982-03-16 Floating refuse-collecting ship Withdrawn EP0061645A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8105492 1981-03-19
FR8105492A FR2502105A1 (en) 1981-03-19 1981-03-19 DEVICE FOR ATTRACTING FLOATING PRODUCTS AGAINST SHIP HULL AND RECOVERY VESSEL OF FLOATING PRODUCTS EQUIPPED WITH SAID DEVICE

Publications (1)

Publication Number Publication Date
EP0061645A1 true EP0061645A1 (en) 1982-10-06

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ID=9256419

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82102113A Withdrawn EP0061645A1 (en) 1981-03-19 1982-03-16 Floating refuse-collecting ship

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Country Link
EP (1) EP0061645A1 (en)
JP (1) JPS57186597A (en)
CA (1) CA1173373A (en)
DK (1) DK122182A (en)
FR (1) FR2502105A1 (en)
NO (1) NO152204C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5911190A (en) * 1995-06-07 1999-06-15 Light Wave, Ltd. Boat activated wave generator
US6105527A (en) * 1996-12-18 2000-08-22 Light Wave Ltd. Boat activated wake enhancement method and system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US370430A (en) * 1887-09-27 Folding platform for harvesters
FR2252452A1 (en) * 1973-11-26 1975-06-20 Hydrovac Systems Internal Inc Level-depressing flow guide for removing oil from water - ensuring minimal amt. of water is drawn off
GB1516790A (en) * 1976-07-10 1978-07-05 Mitsubishi Heavy Ind Ltd Floating-refuse-collecting boat
DE2814260A1 (en) * 1978-04-03 1979-10-11 Horst Dipl Ing Tuppeck Wave profile modifying fins for ships - are horizontal surfaces projecting from hull, located so as to flatten bow and stern waves, and angle of incidence may be fixed or variable

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3701430A (en) * 1971-02-16 1972-10-31 Ralph L Tuttle Oil skimmer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US370430A (en) * 1887-09-27 Folding platform for harvesters
FR2252452A1 (en) * 1973-11-26 1975-06-20 Hydrovac Systems Internal Inc Level-depressing flow guide for removing oil from water - ensuring minimal amt. of water is drawn off
GB1516790A (en) * 1976-07-10 1978-07-05 Mitsubishi Heavy Ind Ltd Floating-refuse-collecting boat
DE2814260A1 (en) * 1978-04-03 1979-10-11 Horst Dipl Ing Tuppeck Wave profile modifying fins for ships - are horizontal surfaces projecting from hull, located so as to flatten bow and stern waves, and angle of incidence may be fixed or variable

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MECHANICAL ENGINEERING, vol. 98, no. 2, février 1976, pages 328-331, New York, USA, J.C. WALBOLD et al.: "New twist for oil". *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5911190A (en) * 1995-06-07 1999-06-15 Light Wave, Ltd. Boat activated wave generator
US6105527A (en) * 1996-12-18 2000-08-22 Light Wave Ltd. Boat activated wake enhancement method and system

Also Published As

Publication number Publication date
NO152204B (en) 1985-05-13
FR2502105A1 (en) 1982-09-24
CA1173373A (en) 1984-08-28
FR2502105B1 (en) 1985-01-18
DK122182A (en) 1982-09-20
NO152204C (en) 1985-08-21
NO820864L (en) 1982-09-20
JPS57186597A (en) 1982-11-17

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