WO1982000811A1 - Motor boat with two hulls - Google Patents

Motor boat with two hulls Download PDF

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Publication number
WO1982000811A1
WO1982000811A1 PCT/FR1981/000105 FR8100105W WO8200811A1 WO 1982000811 A1 WO1982000811 A1 WO 1982000811A1 FR 8100105 W FR8100105 W FR 8100105W WO 8200811 A1 WO8200811 A1 WO 8200811A1
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WO
WIPO (PCT)
Prior art keywords
hulls
ship
water
propellers
hull
Prior art date
Application number
PCT/FR1981/000105
Other languages
French (fr)
Inventor
Atel Chantiers Manche
Original Assignee
Charbonnier J
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 Charbonnier J filed Critical Charbonnier J
Priority to AU75398/81A priority Critical patent/AU7539881A/en
Publication of WO1982000811A1 publication Critical patent/WO1982000811A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/10—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
    • B63B1/12—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H2005/075—Arrangements on vessels of propulsion elements directly acting on water of propellers using non-azimuthing podded propulsor units, i.e. podded units without means for rotation about a vertical axis, e.g. rigidly connected to the hull
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/48—Steering or slowing-down by deflection of propeller slipstream otherwise than by rudder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/08—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/125—Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction, e.g. podded azimuthing thrusters

Definitions

  • the present invention relates to a motor vessel with two hulls, also called catamaran.
  • Ships of this type are well adapted to sea fishing. In addition to the power and speed gain they provide, and the comfort they bring with greater stability, the installation of a superstructure relatively wide between the two hulls facilitates fishing operations, allowing, for example, the implementation of two trawls.
  • ships of this kind have a significant hydrodynamic disadvantage that creates resistance to their advancement. Indeed, the two hulls are always more or less streamlined, so that, towards the front of the ship, the water entering between the hulls is subjected to a compression which has the effect of raising its relative level. Towards the rear, the water rising up a section that is widening is decompressed, with a tendency to decrease its relative level.
  • the present invention aims at producing a vessel with two hulls, in which the aforementioned hydrodynamic effect is suppressed or at least minimized.
  • the motor vessel with two hulls-or catamaran- comprises a superstructure fixed on these hulls and at least one thruster bearing on the water along a thrust axis and actuated by a motor.
  • the thruster is located between the hulls, in the forward half of the ship and, at least in a situation of walking in a straight line, has its thrust axis directed to drive the water in the space included between the two hulls.
  • the thruster acts as a circulator placed in a pipe. On the one hand, it sucks the water at its entrance between the hulls and fights the compression effect. On the other hand, by pushing this water backwards between the hulls, it helps to fill the depression caused by the exit of the water.
  • the ship comprises two thrusters fixed to the front of each hull, their thrust axes being converging towards the rear of the ship.
  • the thrusters collect the water to force its entry into the convergent formed by the front of the hulls and drive it backwards.
  • the thrust axes intersect substantially at the rear end of the shells.
  • the ship comprises at least one thruster attached to the superstructure in the region where the space between the hulls is the narrowest.
  • the shells are profiled so as to present between them, from the front, a first decreasing spacing, then increasing to their rear end, the transition zone forming a neck. This gives the space between the hulls the shape a venturi nozzle that optimizes the effect mentioned above.
  • the thrusters are orientable about a vertical axis.
  • this feature gives a great way to steer the ship.
  • Figure 1 is a plan view, partly in section, of a ship according to the invention, in a first embodiment
  • Figure 2 is a view along II-II of Figure 1;
  • Figure 3 is a view III-III of Figures 1 and 2;
  • Figure 4 is a plan view, partly in section, of a ship according to the invention, in a second embodiment
  • Figure 5 is a partial sectional view along V-V of Figure 4.
  • FIG. 6 is a block diagram of a planing wing propeller for a two-hull ship; .
  • FIG. 7 is a perspective view taken from the sea floor of a vessel equipped with a planing wing propeller;
  • Figure 8 is a diagram similar to Figure 6, but relating to a variant;
  • Figure 9 is a partial side elevational view of the left hull of a ship with two hulls, seen from the right hull;
  • Figure 10 is a rear view of the hull of Figure 9;
  • Figure 11 is a partial sectional view along the plane XI-XI of Figure 9;
  • Figure 12 is a view similar to Figure 9, but relating to a variant;
  • Figure 13 is a rear view of the hull of Figure 12;
  • Figure 14 is a side elevational view of a ship with two hulls, the hull on the right is not shown; and.
  • Figure 15 is a front view of the ship of Figure 14, in the course of a turn.
  • a catamaran 1 comprises two hulls 2 on which is fixed a super structure 3.
  • a motor 4 which, via a vertical shaft 5 and of a horizontal shaft 6, actuates a propeller 7, thanks to angle references of a known type.
  • the propellers 7 are located in the space between the two shells, in the vicinity of the latter, and their thrust axes 8 are arranged to converge at a point P located at the rear of the ship, in the plane of symmetry 9 of the latter.
  • the attachment of the propellers on the hulls is such that these propellers are adjustable around the horizontal shaft 6, transverse to the direction of advancement of the ship.
  • the propellers are also steerable in a horizontal plane to help steer the ship.
  • Rudder rudders 11 are installed behind the hulls 2.
  • the propellers 7 placed obliquely force the water to enter this passage along a preferential path.
  • the water driven by the propellers is sent throughout the rear space between the hulls. This results in a first advantage that this region, which otherwise would be in depression, is filled, and a second advantage of the fact that the propeller jets do not come to rub on the hulls.
  • the propulsion efficiency is thus improved by minimizing the friction of the water on the hulls and by regulating the flow of water between the hulls by suppressing the succession of compression and depression.
  • the suppression, or at least the attenuation, of these pressure phenomena reduces the lateral forces on the hulls and reduces the fatigue of the links. superstructure with hulls.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Toys (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

Motor boat with two hulls (2, 22) comprising a superstructure (3) fixed to said hulls (2, 22) Motors (4) actuate propellers (7) fixed at the front part of the hulls (2, 22) in the space located between said hulls (2, 22). The aerodynamic axes (8, 29) of the hulls (2, 22) converge towards the rear portion of the boat. The water is sucked in the convergency formed between the front parts of the hulls (2, 22) and discharged in the rear divergent.

Description

Navire à moteur à deux coques Double-hulled motor vessel
La présente invention concerne un navire à moteur à deux coques, aussi appelé catamaran.The present invention relates to a motor vessel with two hulls, also called catamaran.
Les navires de ce type sont bien adaptés à la pêche en mer. En effet, outre le gain de puissance et de vitesse qu'ils permettent, et le confort qu'ils apportent par une plus grande stabilité, l'installation d'une superstructure relativement large entre les deux coques facilite les opérations de pêche, en permettant, par exemple, la mise en oeuvre de deux chaluts. Toutefois, les navires de ce genre présentent un inconvénient hydrodynamique notable qui crée une résistance à leur avancement. En effet, les deux coques sont toujours plus ou moins profilées en fuseau, de sorte que, vers l'avant du navire, l'eau entrant entre les coques se trouve soumise à une compression qui a pour effet de faire monter son niveau relatif. Vers l'arrière, l'eau remontant une section qui va s'élargissant se trouve décomprimée, avec une tendance à la baisse de son niveau relatif. Ce phénomène entraîne une certaine déperdition d'énergie qui nuit au rendement de propulsion ainsi qu'une fatigue des liaisons de la superstructure aux coques. Pour y remédier on est amené, surtout dans les catamarans à moteur, à écarter de manière importante les deux coques, ce qui présente d'autres inconvénients. La présente invention vise à réaliser un navire à deux coques, dans lequel l'effet hydrodynamique précité soit supprimé ou au moins minimisé.Ships of this type are well adapted to sea fishing. In addition to the power and speed gain they provide, and the comfort they bring with greater stability, the installation of a superstructure relatively wide between the two hulls facilitates fishing operations, allowing, for example, the implementation of two trawls. However, ships of this kind have a significant hydrodynamic disadvantage that creates resistance to their advancement. Indeed, the two hulls are always more or less streamlined, so that, towards the front of the ship, the water entering between the hulls is subjected to a compression which has the effect of raising its relative level. Towards the rear, the water rising up a section that is widening is decompressed, with a tendency to decrease its relative level. This phenomenon leads to a certain loss of energy which impairs the propulsive efficiency and fatigue of the connections of the superstructure to the hulls. To remedy this we are led, especially in motor catamarans, to significantly exclude the two shells, which has other disadvantages. The present invention aims at producing a vessel with two hulls, in which the aforementioned hydrodynamic effect is suppressed or at least minimized.
Suivant l'invention, le navire à moteur à deux coques -ou catamaran- comprend une superstructure fixée sur ces coques et au moins un propulseur prenant appui sur l'eau suivant un axe de poussée et actionné par un moteur. Il est caractérisé en ce que le propulseur est situé entre les coques, dans la moitié avant du navire et, du moins en situation de marche en ligne droite, a son axe de poussée dirigé de manière à chasser l'eau dans l'espace compris entre les deux coques. Dans ces conditions, le propulseur agit comme un circulateur placé dans une tuyauterie. D'une part, il aspire l'eau à son entrée entre les coques et combat l'effet de compression. D'autre part, en refoulant cette eau vers l'arrière entre les coques, il contribue à combler la dépression causée par la sortie de l'eau.According to the invention, the motor vessel with two hulls-or catamaran- comprises a superstructure fixed on these hulls and at least one thruster bearing on the water along a thrust axis and actuated by a motor. It is characterized in that the thruster is located between the hulls, in the forward half of the ship and, at least in a situation of walking in a straight line, has its thrust axis directed to drive the water in the space included between the two hulls. Under these conditions, the thruster acts as a circulator placed in a pipe. On the one hand, it sucks the water at its entrance between the hulls and fights the compression effect. On the other hand, by pushing this water backwards between the hulls, it helps to fill the depression caused by the exit of the water.
Suivant une première forme de réalisation de 1'invention, le navire comprend deux propulseurs fixés à l'avant de chaque coque, leurs axes de poussée étant convergents vers l'arrière du navire.According to a first embodiment of the invention, the ship comprises two thrusters fixed to the front of each hull, their thrust axes being converging towards the rear of the ship.
Placés ainsi, les propulseurs collectent l'eau pour forcer son entrée dans le convergent formé par I'avant des coques et la chasser vers l'arrière.Placed in this way, the thrusters collect the water to force its entry into the convergent formed by the front of the hulls and drive it backwards.
Suivant une réalisation préférée, les axes de poussée se coupent sensiblement au niveau de l'extrémité arrière des coques.In a preferred embodiment, the thrust axes intersect substantially at the rear end of the shells.
Suivant une seconde forme de réalisation de l'invention, le navire comprend au moins un propulseur fixé à la superstructure dans la région où I'espace entre les coques est le plus étroit.According to a second embodiment of the invention, the ship comprises at least one thruster attached to the superstructure in the region where the space between the hulls is the narrowest.
Quel que soit le profil exact des coques, elles présentent toujours une étrave effilée et une partie arrière également effilée dans une certaine mesure. L'espace compris entre elles présente donc approximativement une forme de tuyère suivie d'un divergent. L'emplacement prévu a pour effet une aspiration de l'eau entre les étraves, où sa compression tend ainsi à être diminuée, et son refoulement vers la partie arrière divergente, qui est normalement le siège d'une dépression. Dans une forme perfectionnée de cette réalisation, les coques sont profilées de manière à présenter entre elles, à partir de l'avant, un écartement d'abord décroissant, puis croissant jusqu'à leur extrémité arrière, la zone de transition formant un col. On donne ainsi à l'espace entre les coques la forme d'une tuyère-venturi qui optimise l'effet mentionné plus haut.Whatever the exact profile of the hulls, they always have a tapered bow and a rear part also tapered to a certain extent. The space between them therefore has approximately a form of nozzle followed by a divergent. The intended location has the effect of suction of water between the bows, where its compression tends to be reduced, and its discharge to the diverging rear part, which is normally the seat of a depression. In an improved form of this embodiment, the shells are profiled so as to present between them, from the front, a first decreasing spacing, then increasing to their rear end, the transition zone forming a neck. This gives the space between the hulls the shape a venturi nozzle that optimizes the effect mentioned above.
Suivant une réalisation avantageuse de I'invention, les propulseurs sont orientables autour d'un axe vertical.According to an advantageous embodiment of the invention, the thrusters are orientable about a vertical axis.
Combinée avec l'emplacement des propulseurs à l'avant, cette caractéristique donne un excellent moyen de diriger le navire.Combined with the location of the thrusters at the front, this feature gives a great way to steer the ship.
Pour régler l'assiette du navire, il est encore prévu de rendre les propulseurs orientables autour d'un axe horizontal perpendiculaire à la direction d'avancement. D'autres particularités et avantages de l'invention ressortiront encore de la description détaillée qui va suivre. Aux dessins annexés, donnés à titre d'exemples non limitatifs:To adjust the attitude of the ship, it is still planned to make the propellers orientable about a horizontal axis perpendicular to the direction of travel. Other features and advantages of the invention will become apparent from the detailed description which follows. In the accompanying drawings, given as non-limiting examples:
. la figure 1 est une vue en plan, avec coupe partielle, d'un navire conforme à l'invention, dans une première forme de réalisation;. Figure 1 is a plan view, partly in section, of a ship according to the invention, in a first embodiment;
. la figure 2 est une vue suivant II-II de la figure 1;. Figure 2 is a view along II-II of Figure 1;
. la figure 3 est une vue suivant III-III des figures 1 et 2;. Figure 3 is a view III-III of Figures 1 and 2;
. la figure 4 est une vue en plan, avec coupe partielle, d'un navire conforme à l'invention, dans une seconde forme de réalisation;. Figure 4 is a plan view, partly in section, of a ship according to the invention, in a second embodiment;
. la figure 5 est une vue en coupe partielle suivant V-V de la figure 4;. Figure 5 is a partial sectional view along V-V of Figure 4;
. la figure 6 est un schéma de principe d'un propulseur à aile planante pour un navire à deux coques; . la figure 7 est une vue en perpsective prise du fond de la mer, d'un navire équipé d'un propulseur à aile planante;. Fig. 6 is a block diagram of a planing wing propeller for a two-hull ship; . FIG. 7 is a perspective view taken from the sea floor of a vessel equipped with a planing wing propeller;
. la figure 8 est un schéma analogue à la figure 6, mais relatif à une variante; . la figure 9 est une vue partielle en élévation latérale de la coque gauche d'un navire à deux coques, vue de la coque droite;. Figure 8 is a diagram similar to Figure 6, but relating to a variant; . Figure 9 is a partial side elevational view of the left hull of a ship with two hulls, seen from the right hull;
. la figure 10 est une vue de derrière de la coque de la figure 9;. Figure 10 is a rear view of the hull of Figure 9;
. la figure 11 est une vue partielle en coupe selon le plan XI-XI de la figure 9 ;. Figure 11 is a partial sectional view along the plane XI-XI of Figure 9;
. la figure 12 est une vue analogue à la figure 9, mais concernant une variante; . la figure 13 est une vue de derrière de la coque de la figure 12;. Figure 12 is a view similar to Figure 9, but relating to a variant; . Figure 13 is a rear view of the hull of Figure 12;
. la figure 14 est une vue en élévation latérale d'un navire à deux coques, la coque de droite n'étant pas représentée; et . la figure 15 est une vue de face du navire de la figure 14, en cours de virage.. Figure 14 is a side elevational view of a ship with two hulls, the hull on the right is not shown; and. Figure 15 is a front view of the ship of Figure 14, in the course of a turn.
En référence aux figures 1 à 3, un catamaran 1 comprend deux coques 2 sur lesquelles est fixée une super structure 3. Dans l'extrémité avant de chaque coque est logé un moteur 4 qui, par l'intermédiaire d'un arbre vertical 5 et d'un arbre horizontal 6, actionne une hélice 7, grâce à des renvois d'angle d'un type connu.With reference to FIGS. 1 to 3, a catamaran 1 comprises two hulls 2 on which is fixed a super structure 3. In the front end of each hull is housed a motor 4 which, via a vertical shaft 5 and of a horizontal shaft 6, actuates a propeller 7, thanks to angle references of a known type.
Les hélices 7 sont situées dans l'espace compris entre les deux coques, au voisinage de ces dernières, et leurs axes de poussée 8 sont disposés de manière à converger en un point P situé au niveau de l'arrière du navire, dans le plan de symétrie 9 de ce dernier.The propellers 7 are located in the space between the two shells, in the vicinity of the latter, and their thrust axes 8 are arranged to converge at a point P located at the rear of the ship, in the plane of symmetry 9 of the latter.
La fixation des hélices sur les coques est telle que ces hélices soient orientables autour de l'arbre hori zontal 6, transversal à la direction d'avancement du navire. Les hélices sont également orientables dans un plan horizontal pour contribuer à diriger le navire.The attachment of the propellers on the hulls is such that these propellers are adjustable around the horizontal shaft 6, transverse to the direction of advancement of the ship. The propellers are also steerable in a horizontal plane to help steer the ship.
Des safrans de gouvernail 11 sont installés à l'arrière des coques 2. Quand le navire avance, l'eau a tendance à entrer difficilement dans le passage convergent ménagé entre les étraves des coques. Les hélices 7 placées obliquement obligent l'eau à entrer dans ce passage suivant un trajet préférentiel. L'eau chassée par les hélices est envoyée dans tout l'espace arrière situé entre les coques. Il en résulte un premier avantage que cette région, qui, sinon, serait en dépression, se trouve comblée, et un second avantage du fait que les jets d'hélice ne viennent pas frotter sur les coques.Rudder rudders 11 are installed behind the hulls 2. When the ship is moving forward, water tends to enter difficult in the convergent passage formed between the bows of the hulls. The propellers 7 placed obliquely force the water to enter this passage along a preferential path. The water driven by the propellers is sent throughout the rear space between the hulls. This results in a first advantage that this region, which otherwise would be in depression, is filled, and a second advantage of the fact that the propeller jets do not come to rub on the hulls.
On améliore ainsi le rendement de propulsion en minimisant le frottement de l'eau sur les coques et en régularisant le flux d'eau entre les coques par suppression de la succession de compression et de dépression. En outre, la suppression, ou au moins l'atténuation, de ces phénomènes de pression réduit les efforts latéraux sur les coques et diminue la fatigue des liaisons de la. superstructure aux coques.The propulsion efficiency is thus improved by minimizing the friction of the water on the hulls and by regulating the flow of water between the hulls by suppressing the succession of compression and depression. In addition, the suppression, or at least the attenuation, of these pressure phenomena reduces the lateral forces on the hulls and reduces the fatigue of the links. superstructure with hulls.
Dans 1'exemple des figures 1 à 3 , la direction du notamment navire est assurée/par deux safrans de gouvernails 11 montés à l'arrière. Cette solution n'est pas toujours très efficace car elle consiste à faire déraper latéralement la partie arrière du navire, qui est la plus profondément immergée. Une première manière de remédier à cet inconvénient est de diriger le bateau en donnant des vitesses différentes aux propulseurs 7, le sens de rotation de l'un d'eux pouvant même être inversé.In the example of Figures 1 to 3, the direction of the particular ship is provided by two rudders rudder 11 mounted at the rear. This solution is not always very effective because it consists in skidding laterally the rear part of the ship, which is the most deeply submerged. A first way to overcome this disadvantage is to steer the boat by giving different speeds to the thrusters 7, the direction of rotation of one of them can even be reversed.
Une seconde manière est mise en oeuvre dans la réalisation des figures 9 à 11, qui se rapproche de celle des figures 1 à 3, excepté que les propulseurs 7 sont à axe de poussée parallèle au plan vertical médian du navire et sont montés sensiblement plus en arrière qu'aux figures 1 à 3, à peu près au tiers avant de la longueur du navire. En outre, pour la direction du navire, chaque coque 2 porte sur sa face sensiblement verticale 2a A second way is implemented in the embodiment of Figures 9 to 11, which is similar to that of Figures 1 to 3, except that the thrusters 7 have a thrust axis parallel to the median vertical plane of the ship and are mounted substantially more. rear as in Figures 1 to 3, about one third before the length of the ship. In addition, for the direction of the ship, each hull 2 bears on its substantially vertical face 2a
PCT/FR1981/000105 1980-09-05 1981-08-21 Motor boat with two hulls WO1982000811A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU75398/81A AU7539881A (en) 1980-09-05 1981-08-21 Navire a moteur a deux coques

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8019191A FR2489778A2 (en) 1980-09-05 1980-09-05 PROPULSION AND STEERING DEVICE OF A VESSEL
FR8019191800905 1980-09-05

Publications (1)

Publication Number Publication Date
WO1982000811A1 true WO1982000811A1 (en) 1982-03-18

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EP (1) EP0059195A1 (en)
ES (1) ES505013A0 (en)
FR (1) FR2489778A2 (en)
GR (1) GR75751B (en)
IT (1) IT1143421B (en)
OA (1) OA06891A (en)
WO (1) WO1982000811A1 (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH128886A (en) * 1928-06-21 1928-11-16 Otto Doebeli Propulsion device on water, land and air vehicles.
FR1246011A (en) * 1960-01-25 1960-11-10 New ship hull shape known as the `` right-sided catamaran shape '' and the <<tractor>> system for catamaran hulls
FR1418806A (en) * 1964-03-09 1965-11-26 Device for propelling or pumping a fluid and application of this device to the propulsion of ships
US3236202A (en) * 1964-12-09 1966-02-22 Gen Dynamics Corp Water craft
US3288100A (en) * 1964-06-26 1966-11-29 Clifford B Cox Boat and jet propulsion means therefor
FR2238634A1 (en) * 1973-07-23 1975-02-21 Hirmann Georg
AU462904B2 (en) * 1971-10-19 1975-07-10 Robert Bruce Webster James Improved deflection system
US3954083A (en) * 1973-11-23 1976-05-04 The Mocaire Company Twin-propeller stern drive

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH128886A (en) * 1928-06-21 1928-11-16 Otto Doebeli Propulsion device on water, land and air vehicles.
FR1246011A (en) * 1960-01-25 1960-11-10 New ship hull shape known as the `` right-sided catamaran shape '' and the <<tractor>> system for catamaran hulls
FR1418806A (en) * 1964-03-09 1965-11-26 Device for propelling or pumping a fluid and application of this device to the propulsion of ships
US3288100A (en) * 1964-06-26 1966-11-29 Clifford B Cox Boat and jet propulsion means therefor
US3236202A (en) * 1964-12-09 1966-02-22 Gen Dynamics Corp Water craft
AU462904B2 (en) * 1971-10-19 1975-07-10 Robert Bruce Webster James Improved deflection system
FR2238634A1 (en) * 1973-07-23 1975-02-21 Hirmann Georg
US3954083A (en) * 1973-11-23 1976-05-04 The Mocaire Company Twin-propeller stern drive

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ES8206330A1 (en) 1982-08-16
EP0059195A1 (en) 1982-09-08
IT8149167A0 (en) 1981-08-25
OA06891A (en) 1983-04-30
GR75751B (en) 1984-08-02
ES505013A0 (en) 1982-08-16
IT1143421B (en) 1986-10-22
FR2489778A2 (en) 1982-03-12

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