EP3411287B1 - Katamaran boot - Google Patents

Katamaran boot Download PDF

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Publication number
EP3411287B1
EP3411287B1 EP17706592.7A EP17706592A EP3411287B1 EP 3411287 B1 EP3411287 B1 EP 3411287B1 EP 17706592 A EP17706592 A EP 17706592A EP 3411287 B1 EP3411287 B1 EP 3411287B1
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EP
European Patent Office
Prior art keywords
axis
rudder
barycentric
catamaran craft
rotation
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EP17706592.7A
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English (en)
French (fr)
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EP3411287A1 (de
Inventor
John SCANU
Luca RIVIERI
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Individual
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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 
    • 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
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
    • B63H21/17—Use of propulsion power plant or units on vessels the vessels being motor-driven by electric motor
    • 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
    • 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
    • B63B2035/002—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for for inland waters, e.g. for use on canals or rivers
    • 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
    • B63B2035/004—Passenger vessels, e.g. cruise vessels or the like
    • 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
    • B63H2005/1254—Podded azimuthing thrusters, i.e. podded thruster units arranged inboard for rotation about vertical axis
    • B63H2005/1258—Podded azimuthing thrusters, i.e. podded thruster units arranged inboard for rotation about vertical axis with electric power transmission to propellers, i.e. with integrated electric propeller motors
    • 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
    • B63H25/06—Steering by rudders
    • B63H2025/063—Arrangements of rudders forward of the propeller position, e.g. of backing rudders; Arrangements of rudders on the forebody of the hull; Steering gear therefor

Definitions

  • the present invention relates to a catamaran craft of the type specified in the preamble of the first claim.
  • catamaran craft In the last few years, the use of catamaran craft has become more and more widespread, in other words, means made up of two hulls and a structure connecting the two hulls, for transporting people and/or objects.
  • One first important disadvantage is represented by the fact that the flow of water impacting the propellers of the engines is not optimum, as it is disturbed by the careening of the hulls. This results in a reduced performance of the propellers themselves and, consequently, a reduced thrust.
  • the technical task at the basis of the present invention is to design a catamaran craft that is substantially capable of overcoming the stated disadvantages.
  • an important object of the invention is to have a catamaran craft characterised by elevated simplicity in terms of manoeuvrability.
  • Another object of the invention is to design a catamaran craft that guarantees greater propeller performance, with the same power installed, thanks to its improved positioning.
  • the catamaran craft according to the claim is globally indicated with number 1 .
  • each hull 2 presents both ends with a shape of a known type and, in particular, tapered so as to assist the movements of the craft 1 in at least one direction, and in particular, in both directions.
  • the hulls 2 have one end, preferably the bow 1 a, tapered and the other end, preferably the stern 1 b, not tapered, and for precision, ending with a flat side that is opportunely practically perpendicular to the barycentric axis 1 c.
  • the hulls 2 can have a minimum wave resistance, in other words they can have such geometries as to have a minimum wave resistance.
  • the catamaran craft 1 comprises a deck 3 connecting the hulls 2 and, preferably, a superstructure 4 defining a collection area, together with the deck, for transporting objects and/or people, which is opportunely made up of side walls and a cover.
  • the deck 3 is joined between the hulls 2 and therefore, integrally constrains the hulls to each other 2. It defines a support surface 3a for the transport of objects and/or people.
  • the deck 3 is flat and defines a flat support surface 3a.
  • the deck 3 and, in particular, the support surface 3a are substantially parallel to the main barycentric extension axis 1 c.
  • the catamaran craft 1 comprises at least one azimuth thruster 5, which is suitable for moving the catamaran craft 1 ; at least one rudder 6, opportunely a blade, suitable for directing the craft 1 ; and, opportunely, a sailing station 7 connected to the thruster 5 and/or to the rudder 6 so as to control the direction and travel speed of the craft 1 .
  • the catamaran craft 1 can comprise only one azimuth thruster 5 ( Figures 1 -4 ). Alternatively, the catamaran craft 1 can comprise several azimuth thrusters 5 and preferably two azimuth thrusters 5.
  • An azimuth thruster 5 is constrained to said deck 3 and comprises at least one propeller 51 defining a thrust axis 5a for the catamaran craft 1 ; a pod 52 supporting the propeller 51 and housing opportunely the engine of said propeller 51 (alternatively, the engine can be on the deck and fitted with a kinematic system to transmit motion to the propeller 51)t; a rotation group suitable for rotating around a rotation axis 5b, at least the pod 52 and the propeller 51 in relation to the deck 3; and at least one connecting element 53 constraining the pod 52 to the rotation group.
  • the pod 52 and the propeller 51 are suitable for being submerged, at least partially, in water when the catamaran craft 1 is sailing.
  • the connecting element 53 can comprise a section bar, usually called a nozzle, with an opportunely circular section and preferably hollow. Alternatively, it comprises a plate, with an opportunely ogival section, or, in another preferred alternative, it comprises a section bar and a blade. A further alternative consists of a double blade or a double profile.
  • the rotation group is integral with the deck 3.
  • the rotation group defines a rotation axis 5b that is substantially perpendicular to the barycentric axis 1c so as to rotate the pod 52 varying the tilt angle between the thrust axis 5a and the barycentric axis 1 c, keeping the tilt between the thrust axis 5a and the support surface 3° constant.
  • the thruster 5 can comprise a regulator, for example in accordance with a command given from the sailing station 7, for the tilt of the thrust axis 5a, which is suitable for varying the tilt between the rotation axis 5b and the support surface 3a.
  • Such regulator is suitable for rotating the pod 52 and the propeller 51 in relation to a regulation axis that is practically perpendicular to the rotation 5b and thrust axis 5a.
  • the regulation axis is practically parallel to the support surface 3a.
  • the azimuth thruster 5 and, in particular, the connecting element 53 are suitable for varying, for example in accordance with a command given from the sailing station 7, the distance of the thrust axis 5a from the support surface 3a thus adjusting the submersion depth of the pod 52 and the propeller 51 .
  • the connecting element 53 can be telescopic to vary said distance modifying its own extension along an extension axis that is substantially perpendicular to the support surface 3a and in particular substantially parallel to the rotation axis 5b.
  • the craft 1 allows the whole thruster 5 to be moved vertically by the kinetic system fixed in the hull constraint area.
  • the catamaran craft 1 can comprise a log or some other device, such as a gps, for example, which is suitable for measuring the speed of the catamaran craft 1 .
  • Said log is opportunely connected to the azimuth thruster 5 to allow the submersion depth of the pod 52 and the propeller 51 to be adjusted according to the speed of the catamaran craft 1 .
  • the log is suitable for controlling a variation of said depth that is directly proportionate to the speed variation of the catamaran craft 1 .
  • the catamaran craft 1 can comprise a regulating device for the position of the azimuth thruster 5 in relation to the deck 3, which is suitable, in particular, for varying the distance between the thruster 5 and the rudder 6 along the barycentric axis 1 c.
  • the regulating device can be controlled according to a command given from the sailing station 7.
  • the regulating device is suitable for moving the azimuth thruster 5 and ⁇ or the rudder 6 in relation to the deck 3 along a regulating axis that is substantially parallel to the main barycentric extension axis 1 c.
  • the regulating device can comprise at least one guide, for example dovetail shaped, that is integral with the deck 3 and defines the regulating axis; and at least one slider, which is integral with the azimuth thruster 5 or the rudder 6 (preferably the thruster 5) that is suitable for sliding along said guide.
  • at least one guide for example dovetail shaped, that is integral with the deck 3 and defines the regulating axis; and at least one slider, which is integral with the azimuth thruster 5 or the rudder 6 (preferably the thruster 5) that is suitable for sliding along said guide.
  • the regulating device comprises two guides placed on opposite sides in relation to the rotation group; and, for each guide, two sliders constrained integrally with the rotation group.
  • the regulating device can comprise, in addition to the at least one guide, at least a first slider integral with the azimuth thruster 5 and at least a second slider integral with the rudder 6; wherein said at least first slider and said at least second slider are suitable for sliding, preferably independently, along said guide.
  • the azimuth thruster 5, as described above, and the rudder 6, as described below, are placed along the main barycentric extension axis 1c and are, therefore, equally spaced out from the hulls 2.
  • the catamaran craft 1 can comprise only one rudder 6 ( Figures 1 -4 ). Alternatively, the catamaran craft 1 can comprise a number of rudders 6, and preferably two rudders 6 ( Figure 5 ).
  • One rudder 6 is constrained to the deck 3 or to a hull 2 and is suitable for being at least partially submerged in water so that, if opportunely controlled by the operator from the sailing station 7, it directs the catamaran craft 1 together with the azimuth thruster 5.
  • the rudder 6 can be constrained loosely to the deck 3 or to the hull 2 so as to rotate in relation to it, varying the tilt of the lying plane of the rudder 6 in relation to the main barycentric extension axis 1 c.
  • control member suitable for controlling the rotation of the rudder 6 around an additional rotation axis 6a defining a plurality of positions wherein the lying plane of the rudder 6 is transversal or parallel to the main barycentric extension axis 1 c.
  • the additional rotation axis 6a is practically normal to the main barycentric extension axis 1c and, therefore parallel to the rotation axis 5b.
  • the azimuth thruster 5 and the rudder 6 are placed at opposite ends in relation to a barycentric transversal plane 1d, which can be identified as a plane that is perpendicular to the main barycentric extension axis 1 c, passing through the barycentre of the catamaran craft 1 .
  • the thruster 5 is accessible near the bow 1a and the rudder 6 near the stern 1b ( Figures 1 and 2 ).
  • the thruster 5 is accessible near the stern 1b and the rudder 6 near the bow 1a ( Figures 3 and 4 ).
  • two azimuth thrusters 5 can be accessible on opposite sides in relation to the barycentric extension axis 1c and opportunely equally spaced out from the main barycentric extension axis 1c itself.
  • the two azimuth thrusters 5 can be placed in front of the hulls 2, whereas, if they are near the stern 1 b, the two azimuth thrusters 5 can be placed behind the hulls 2.
  • two rudders 6 can be accessible on opposite sides in relation to the barycentric axis 1c and equally spaced out from the main barycentric extension axis 1c itself. In particular, if they are near the bow 1 a, the two rudders 6 can be placed in front of the hulls 2, whereas, if they are near the stern 1 b, the two rudders 6 can be placed behind the hulls 2.
  • the catamaran craft 1 can comprise only one rudder 6 and only one azimuth thruster 5 ( Figures 1 -4 ). Alternatively, the catamaran craft 1 can comprise only one rudder 6 and two azimuth thrusters 5. In another alternative, the craft 1 can comprise two rudders 6 and only one azimuth thruster 5 ( Figure 5 ). In a further alternative, the catamaran craft 1 can comprise two rudders 6 and two azimuth thrusters 5.
  • the axes 5b and 6a are substantially perpendicular to the support surface 3a.
  • the axes 1 c, 5b and 6a lie on one same plane, perpendicular to the support surface 3a.
  • the azimuth thruster 5 and the rudder 6 and, for precision, the additional rotation axis 6a and the rotation axis 5b have different distances from the barycentric transversal plane 1 d.
  • the azimuth thruster 5 and the rudder 5e, preferably, the additional rotation axis 6a and the rotation axis 5b have substantially the same distance from the transversal barycentric plane 1 d.
  • the sailing station 7 is suitable for controlling the azimuth thruster 5, the rudder 6 and, in some cases, the regulator.
  • the sailing station 7 is suitable for controlling a rotation of the rudder 6 in relation to the additional rotation axis 6a and a rotation of the azimuth thruster 5 in relation to the rotation axis 5b, which are different and, in particular, not simultaneous and/or have different speeds, so that the rudder 6 and the thrust axis 5a define different angles in relation to the barycentric axis 1 c.
  • the operator can control a rotation of the azimuth thruster 5 around the rotation axis 5b and of the rudder 6 around the additional rotation axis 6a.
  • Such double rotation makes it possible to vary both the tilt of the thrust axis 5a and the tilt of the lying plane of the rudder 6 in relation to the barycentric axis 1 c, to exploit both the action of the thruster 5 and that of the rudder to control said rotation ⁇ turn.
  • Such double rotation can have equal, opposite and/or different breaths.
  • the operator can control a rotation solely of the azimuth thruster 5 around the rotation axis 5b or of the rudder 6 around the additional rotation axis 6a.
  • the invention presents important advantages.
  • One first, important advantage is represented by the fact that, as the azimuth thruster 5 and the rudder 6 are placed far from the hulls 2 and, in detail, on opposite sides to the transversal barycentric plane 1 d, they are hit by an optimum flow of water and thus offer greater efficiency, consequently making maximum use of the thrust action of the azimuth thruster 5 and the guiding action of the rudder 6.
  • said arrangement means that the flow coming out from the rudder 6 and/or the azimuth thruster 5 doesn't alter the flow going into the thruster 5 and/or rudder 6.
  • azimuth thruster 5 and the rudder 6 are placed along the longitudinal axis 1 c, they are incidentally hit by a flow of water that is not disturbed, or only slightly, by the hulls 2.
  • the regulating device By enabling the position of the azimuth thruster 5 to be adjusted along the barycentric axis 1 c, it allows it to be adapted to that of the load of the catamaran craft 1 .
  • a further advantage is given by the possibility of varying the submersion depth of the propeller 51 , making it possible to optimise the efficiency of the propeller 51 itself according to, for example, the conditions of the sea.
  • Optimisation is also given by the fact that adjusting the position of the propeller in depth allows the propeller to be positioned correctly in relation to the central wave, which is created between the hulls during the travelling phase and can be varied depending on the speed.
  • control of the depth according to the speed of the craft 1 means it is always possible to have the right submersion depth, also when said speed is varied.
  • Another advantage is given by the presence of several rudders 6 and, in particular, two rudders 6.
  • this technical solution guarantees greater manoeuvring efficiency for the catamaran craft 1 thanks to the increased torque transmitted by the two rudders 6.
  • having two rudders 6 means their size can be reduced as a result of their increased overall efficiency.

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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)
  • Toys (AREA)

Claims (13)

  1. Katamaran-Boot (1), das ein Heck (1b), einen Bug (1a) und ein baryzentrische Verlaufsachse (1c) definiert, umfassend:
    - zwei Rümpfe (2) im Abstand zueinander, die geeignet sind, zumindest teilweise in Wasser getaucht zu sein;
    - ein die genannten Rümpfe (2) verbindendes Deck (3);
    - mindestens eine an dem genannten Deck (3) gehaltene Propellergondel (5); und
    - mindestens ein an dem genannten Deck (3) gehaltenes und an der der genannten Propellergondel (5) im Verhältnis zu einer zu der genannten baryzentrischen Verlaufsachse (1c) senkrechten baryzentrischen Querebene (1d) gegenüberliegenden Seite platziertes Ruder (6)
    - und dadurch gekennzeichnet, dass
    - die genannte Propellergondel (5) an dem genannten Heck (1b) und das genannte Ruder (6) an dem genannten Bug (1a) platziert ist.
  2. Katamaran-Boot (1) nach dem vorangegangenen Anspruch, umfassend zwei des genannten hinter den genannten Rümpfen (2) platzierten mindestens einen Ruders (6).
  3. Katamaran-Boot (1) nach dem vorangegangenen Anspruch, umfassend zwei des genannten vor den genannten Rümpfen (2) platzierten mindestens einen Ruders (6).
  4. Katamaran-Boot (1) nach einem oder mehreren der vorangegangenen Ansprüche,
    bei dem die genannte Propellergondel (5) und das genannte Ruder (6) entlang der genannten baryzentrischen Hauptverlaufsachse (1c) angeordnet sind.
  5. Katamaran-Boot (1) nach einem oder mehreren der vorangegangenen Ansprüche, umfassend eine Regelvorrichtung, die geeignet ist, die genannte Propellergondel (5) zu bewegen und so den Abstand zwischen der genannten Propellergondel (5) und dem genannten Ruder (6) entlang der genannten baryzentrischen Hauptverlaufsachse (1c) zu variieren.
  6. Katamaran-Boot (1) nach dem vorangegangenen Anspruch, bei dem die genannte Regelvorrichtung mindestens eine mit dem genannten Deck (3) eine Einheit bildende Führung umfasst; und mindestens einen mit der genannten Propellergondel (5) eine Einheit bildenden Schieber, der geeignet ist, entlang der genannten Führung zu gleiten.
  7. Katamaran-Boot (1) nach einem oder mehreren der vorangegangenen Ansprüche, bei dem die genannte Propellergondel (5) mindestens einen eine Schubachse (5a) für das genannte Katamaran-Boot (1) definierenden Propeller (51) umfasst; ein den genannten Propeller (51) tragendes Gehäuse (52) und eine Rotationsgruppe, die geeignet ist, um eine Rotationsachse (5b) zu drehen, wobei das genannte Gehäuse (52) und der genannte Propeller (51) die Neigung der genannten Schubachse im Verhältnis zu der genannten baryzentrischen Hauptverlaufsachse (1c) variieren.
  8. Katamaran-Boot (1) nach dem vorangegangenen Anspruch, bei dem das genannte Deck (3) eine Trägerfläche (3a) definiert; und bei dem die genannte Propellergondel (5) geeignet ist, den Abstand des genannten Gehäuses (52) und des genannten Propellers (51) von der genannten Trägerfläche (3a) durch Einstellen der Eintauchtiefe des genannten Gehäuses (52) und des genannten Propellers (51) zu variieren.
  9. Katamaran-Boot (1) nach dem vorangegangenen Anspruch, bei dem die genannte Propellergondel (5) ein Verbindungselement (53) umfasst, das das genannte Gehäuse (52) an der genannten Rotationsgruppe hält; und bei dem das genannte Verbindungselement (53) teleskopisch ausgelegt ist, um den genannten Abstand der genannten Schubachse (5a) von der genannten Trägerfläche (3a) zu variieren und so ihren Verlauf entlang einer Verlaufsachse zu ändern, die im Wesentlichen senkrecht zu der genannten Trägerfläche (3a) ist.
  10. Katamaran-Boot (1) nach einem oder mehreren der Ansprüche 7-8, umfassend ein zum Messen der Geschwindigkeit des genannten Katamaran-Boots (1) geeignetes Log; und bei dem das genannte Log geeignet ist, eine Änderung der Eintauchtiefe des genannten Gehäuses (52 und) zu steuern; bei dem der genannte Propeller (51) direkt proportional zu einer Änderung der genannten Geschwindigkeit des genannten Katamaran-Boots (1) ist.
  11. Katamaran-Boot (1) nach einem oder mehreren der Ansprüche 7-10, bei dem das genannte Ruder (6) eine Lageebene definiert und ein zur Steuerung der Rotation des genannten Ruders (6) um eine zusätzliche Rotationsachse (6a) geeignetes Kontrollelement umfassen kann, das die Neigung der genannten Lageebene des genannten Ruders (6) im Verhältnis zu der genannten baryzentrischen Hauptverlaufsachse (1c) variiert; und bei dem die genannten Rotationsachse (5b) im Wesentlichen parallel zu der genannten zusätzlichen Rotationsachse (6a) ist; und bei dem die genannte zusätzliche Rotationsachse (5b), die genannte zusätzliche Rotationsachse (6a) und die baryzentrische Hauptverlaufsachse (1c) in derselben Ebene liegen.
  12. Katamaran-Boot (1) nach einem oder mehreren der Ansprüche 7-11, umfassend eine zur Steuerung einer Rotation des genannten Ruders (6) im Verhältnis zu der genannten zusätzlichen Rotationsachse (6a) und einer Rotation der genannten Propellergondel (5) im Verhältnis zu der genannten Rotationsachse (5b), die simultan erfolgen und Geschwindigkeiten gleicher Breite und entgegengesetzter Richtung aufweisen, so dass das genannte Ruder (6) und die genannte Schubachse (5a) Winkel der gleichen Breite und entgegengesetzter Richtung im Verhältnis zu der genannten baryzentrischen Hauptverlaufsachse (1c) einnehmen, geeignete Segelstation (7).
  13. Katamaran-Boot (1) nach einem oder mehreren der Ansprüche 7-12, umfassend eine zur Steuerung einer Rotation des genannten Ruders (6) im Verhältnis zu der genannten zusätzlichen Rotationsachse (6a) der genannten Propellergondel (5) im Verhältnis zu der genannten Rotationsachse (5b), die unterschiedlich erfolgen, so dass das genannte Ruder (6) und die genannte Schubachse (5a) verschiedene Winkel im Verhältnis zu der genannten baryzentrischen Hauptverlaufsachse (1c) einnehmen, geeignete Segelstation (7).
EP17706592.7A 2016-02-03 2017-01-31 Katamaran boot Active EP3411287B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUB2016A000033A ITUB20160033A1 (it) 2016-02-03 2016-02-03 Imbarcazione catamarana
PCT/IB2017/050514 WO2017134560A1 (en) 2016-02-03 2017-01-31 Catamaran craft

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Publication Number Publication Date
EP3411287A1 EP3411287A1 (de) 2018-12-12
EP3411287B1 true EP3411287B1 (de) 2020-01-22

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EP (1) EP3411287B1 (de)
IT (1) ITUB20160033A1 (de)
WO (1) WO2017134560A1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114906310A (zh) * 2022-05-30 2022-08-16 嘉兴市伟佳船舶有限公司 一种具有助航辅助装置的客船

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4315475A (en) * 1980-03-07 1982-02-16 Echols John B Knockdown catamaran
US5988092A (en) * 1997-04-08 1999-11-23 Price; Harold L. Paddle wheel boat
US9090321B1 (en) * 2013-02-04 2015-07-28 John R Casperson Propulsion system for multihull watercraft

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* Cited by examiner, † Cited by third party
Title
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EP3411287A1 (de) 2018-12-12
WO2017134560A1 (en) 2017-08-10
ITUB20160033A1 (it) 2017-08-03

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