EP2894090A1 - Hydroptère - Google Patents

Hydroptère Download PDF

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Publication number
EP2894090A1
EP2894090A1 EP15151097.1A EP15151097A EP2894090A1 EP 2894090 A1 EP2894090 A1 EP 2894090A1 EP 15151097 A EP15151097 A EP 15151097A EP 2894090 A1 EP2894090 A1 EP 2894090A1
Authority
EP
European Patent Office
Prior art keywords
boat
hydrofoil
section
hydrofoils
hull
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Withdrawn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
EP15151097.1A
Other languages
German (de)
English (en)
Inventor
Michael Barron
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP2894090A1 publication Critical patent/EP2894090A1/fr
Withdrawn legal-status Critical Current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 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
    • B63B1/24—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type
    • B63B1/248—Shape, hydrodynamic features, construction of the foil
    • 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
    • B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
    • B63B1/24—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type
    • B63B1/28—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type with movable hydrofoils
    • B63B1/285—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type with movable hydrofoils changing the angle of attack or the lift of the foil
    • 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
    • B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
    • B63B1/24—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type
    • B63B1/28—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type with movable hydrofoils
    • B63B1/30—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type with movable hydrofoils retracting or folding
    • 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
    • B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
    • B63B1/24—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type
    • B63B1/28—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type with movable hydrofoils
    • B63B2001/281—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type with movable hydrofoils movable about an axis substantially parallel to the flow direction

Definitions

  • the present invention relates to a hydrofoil for a boat and to a boat having one or more hydrofoils.
  • Hydrofoils are increasingly being used on boats to achieve better performance by lifting the boat up out of the water so as to reduce drag.
  • current foil systems often fail to deliver the desired performance with ease of boat handling. It is a principal aim of this invention to provide a hydrofoil for a boat that overcomes the shortcomings of the current foil systems.
  • a hydrofoil for a boat comprising:
  • a “hydrodynamic force” as referred to above is a force (e.g. "lift”) which is provided by a structure as a result of the flow of water around that structure.
  • the hydrofoil of the present invention has a first section that provides a first hydrodynamic force and that extends generally downwards away from the hull of the boat and towards the centreline of the boat.
  • the amount of the first section that is in the water varies gradually with boat ride height.
  • the amount of lift produced by a hydrofoil is dependent on boat speed and the area of the hydrofoil that is in the water. When boat speed is higher, more lift is produced per area of a hydrofoil.
  • the hydrofoil of the present invention As boat speed increases, progressively less of the first section needs to be, and is, in the water. Since less of the first section is in the water at higher speeds, the amount of drag produced by the first section is reduced. Conversely, when boat speed decreases, less lift is produced per area of the first section. However, this is compensated for in the present invention because progressively more of the first section is in the water. Thus, despite changes in boat speed, a more constant amount of lift and a generally stable boat ride height is provided by the hydrofoil of the present invention.
  • the hydrofoil of the present invention has a second section that provides a second hydrodynamic force and that extends under the first section and generally away from the centreline of the boat.
  • the location for some of the lift generation of the hydrofoil is further away from the centreline of the boat.
  • the base for hydrofoiling can be very wide. This provides good boat stability.
  • first and second sections for providing hydrodynamic forces that are above and below one another increases (e.g. doubles) the available hydrofoil area for a given width of hydrofoil. This may be useful where hydrofoil width is restricted, for example in A Class catamarans.
  • the direction in which the second hydrodynamic force acts is preferably generally upwards.
  • the direction in which the first hydrodynamic force acts is preferably generally upwards and towards the centreline of the boat.
  • the first section preferably provides progressively more and more upward lift.
  • the boat preferably comprises multiple hulls with one of the hydrofoils of the present invention being provided on each hull. Accordingly, when the boat is heeled over, only one hydrofoil is likely to be in the water. Conversely, when the boat is level, two (oppositely configured) hydrofoils are likely to be in the water.
  • the second hydrodynamic force of the hydrofoil (which tends to act in tandem with the second hydrodynamic force of another hydrofoil to a greater extent) need not be as great, and preferably is not as great, as the first hydrodynamic force (which tends to act in tandem with the first hydrodynamic force of another hydrofoil to a lesser extent).
  • the first hydrodynamic force of the hydrofoil is not as great, or is the same, as the second hydrodynamic force.
  • the hydrofoil is connectable to the boat at or near a first end of the first section.
  • a second end of the first section may be directly or indirectly connected to a first end of the second section.
  • the first section and second section may be formed as part of a unitary structure.
  • the second section preferably has a free second end.
  • the angle between a) the direction in which the first hydrodynamic force acts and b) the direction in which the second hydrodynamic force acts is preferably between 0° and 80°, more preferably between 0° and 60°, for example approximately 45°.
  • the first and second hydrodynamic forces act in substantially the same direction.
  • the angle between a) the notional plane of the first section (which is generally perpendicular to the direction in which the first hydrodynamic force acts) and b) the notional plane of the second section (which is generally perpendicular to the direction in which the second hydrodynamic force acts) is preferably between 0° and 80°, more preferably between 0° and 60°, for example approximately 45°.
  • the notional planes of the first and second section are substantially parallel.
  • the second section may also extend upwards towards the hull of the boat.
  • first and second sections generally are not planar structures and will typically have irregular or curved cross-sections (so as to provide "lift”).
  • the first and second sections may also curve from a first end of the section to a second end of the section.
  • the hydrofoil preferably comprises a third section between the first and second sections.
  • This can, for example, mean that there is always a part of the hydrofoil that is in the water and provides lateral stability.
  • the third section may allow the hydrofoil to extend deeper into the water thereby giving a higher ride height.
  • the third section may also or instead be used to create other useful hydrodynamic forces, e.g. hydrodynamic forces towards the centreline of the boat and/or upwards.
  • the third section preferably extends generally downwards away from the hull of the boat and/or preferably provides a third hydrodynamic force.
  • the direction in which the third hydrodynamic force acts is preferably generally towards the centreline of the boat and/or is preferably generally at an angle upwards and towards the centreline of the boat.
  • the angle between a) the general direction of extension between first and second ends of the first section and b) the general direction of extension between first and second ends of the third section is between 20° and 80°, more preferably between 35° and 55°, for example approximately 45°.
  • the angle between a) the general direction of extension between first and second ends of the third section and b) the general direction of extension between first and second ends of the second section is preferably between 80° and 135°, more preferably between 80° and 100°, for example approximately 90°.
  • the first section, second section and/or third section of the hydrofoil has a static part and a moveable part that can be moved in use so as to alter the hydrodynamic properties of the section in question.
  • the static part is preferably upstream of the moveable part in normal use, i.e. when the boat is moving forwards and the hydrodynamic forces are being produced.
  • the moveable part is pivotable about an axis which is at or towards the upstream end of the moveable part.
  • the first section, second section and/or third section of the hydrofoil has a static part and a deformable part which can be deformed in use so as to alter the hydrodynamic properties of that section.
  • the static part is preferably upstream of the deformable part in normal use, i.e. when the boat is moving forwards and the hydrodynamic forces are being produced.
  • the deformable part is flexibly connected to the static part, for example by a strut and/or by the outer casing of the section in question.
  • the deformable part comprises a cavity within the casing of the section in question, the cavity preferably being fluidly connected to an opening at or near the downstream end of the section in question.
  • the present invention also extends to a boat comprising one or more hydrofoils as described above.
  • the boat preferably comprises multiple hulls, with at least one hydrofoil of the one or more hydrofoils being provided on each hull.
  • the one or more hydrofoils may comprise at least two hydrofoils (e.g. one hydrofoil on each hull) that are oppositely configured to one another and/or that are mirror images of one another.
  • the one or more hydrofoils may each have a position that is adjustable, for example by one or more of: translating that hydrofoil in the fore to aft direction of the boat; rotation of that hydrofoil about an axis that runs in the fore to aft direction of the boat; pivoting that hydrofoil about an axis that runs athwartships; and/or retracting or deploying that hydrofoil in a vertical direction, for example up through the hull of the boat.
  • the one or more hydrofoils are each able to be partially or completely stowed by rotation of that hydrofoil, for example about an axis that runs in the fore to aft direction of the boat, and/or by retraction of that hydrofoil, for example up through the hull of the boat.
  • the one or more hydrofoils are rotatable about an axis that runs in the fore to aft direction of the boat such that the first section extends vertically downwards away from a hull of the boat, i.e. such that the first section no longer extends generally towards the centreline of the boat.
  • the means for adjusting the position of the hydrofoil and the means for stowing the hydrofoil may be the same or different means.
  • FIGS 1A-1D show several profiles for hydrofoils 100 according to embodiments of the present invention.
  • each hydrofoil 100 is connected by suitable fixings to a hull 108 of a boat.
  • Each hydrofoil 100 has a first section 102 that provides a first hydrodynamic force, a second section 104 that provides a second hydrodynamic force, and a third section 106 that links the first section 102 to the second section 104.
  • the third section 106 may or may not provide a third hydrodynamic force.
  • the various sections of the hydrofoils 100 may be separate structures that are later connected together or may form part of a unitary structure.
  • the hydrofoils 100 of Figures 1A and 1C are generally curved whereas the hydrofoils 100 of Figures 1B and 1D are generally angular.
  • FIG 2 shows the hydrofoil 100 of Figure 1D when attached to a hull 108 of a multi-hulled boat 110.
  • the hydrofoil 100 is connected to the hull 108 near a first end of the first section 102 such that the first section 102 extends generally downwards away from the hull 108 of the boat 110 and towards the centreline 112 of the boat 110.
  • the third section 106 then extends generally downwards away from the hull 108 of the boat 110.
  • the second section 104 then extends under the first section and generally away from the centreline 112 of the boat 110. Only half of the boat 110 is shown in Figure 2 , but it will be appreciated that a second "mirror image" hydrofoil, which is oppositely configured to the hydrofoil 100, is fixed to the second hull of the boat 110.
  • Figure 2 also shows the first section 102 and the second section 104 in cross-section.
  • the first section 102 has a pressure side surface 102a that runs from a leading edge 102c to a trailing edge 102d, and a suction side surface 102b that runs from the leading edge 102c to the trailing edge 102d.
  • the leading edge 102c points fore and the trailing edge 102d points aft.
  • the pressure side surface 102a and suction side surface 102b create the first hydrodynamic force.
  • the direction in which the first hydrodynamic force acts is generally upwards and towards the centreline 112 of the boat.
  • the second section 104 also has a pressure side surface 104a that runs from a leading edge 104c to a trailing edge 104d, and a suction side surface 104b that runs from the leading edge 104c to the trailing edge 104d.
  • the leading edge 104c again points fore and the trailing edge 104d points aft.
  • the pressure side surface 104a and suction side surface 104b create the second hydrodynamic force.
  • the direction in which the second hydrodynamic force acts is generally upwards.
  • the position of the hydrofoil 100 is fixed.
  • the hydrofoils can be repositioned or stowed. Repositioning the hydrofoil 100 may be desirable so as to adjust the balance, e.g. pitch, of the boat 110. Stowing the hydrofoil 100 may be desirable in light wind conditions, i.e. when the hydrofoil 100 is unlikely to create sufficient lift and would merely create drag.
  • Figure 3A shows the hydrofoil 100 of figure 1A when fitted to a rotating mount 114 and figures 3B and 3C show the hydrofoil 100 of figure 1B when fitted to a rotating mount 114.
  • Figures 3A-C show that the hydrofoils 100 can be stowed, out of the water, by rotation of that hydrofoil 100 about an axis 116 that runs along the hull 108 in the fore to aft direction of the boat 110.
  • the hydrofoil 100 is first rotated from a fully deployed position (shown with a solid line) below the hull 108 of the boat through a partially deployed position (shown with a dashed line) below the hull 108 of the boat.
  • the hydrofoil 100 is then rotated from the partially deployed position to a fully stowed position (shown with a dashed line) above the hull 108 of the boat.
  • the opposite process is then used to redeploy the hydrofoil 100.
  • the fully deployed position may be used as a "light wind” position for the hydrofoil 100 and a partially deployed position may be used as a "strong wind” position for the hydrofoil 100 and/or when sailing downwind.
  • the rotating mount 114 may also be translated along the hull 108 so as to vary the fore-aft position of the hydrofoil 100 to alter the pitch of the boat 110 as desired.
  • FIGs 4A and 4B show an alternative way to stow a hydrofoil 100 according to an embodiment of the present invention.
  • the hydrofoil 100 is first rotated from its fully deployed position (shown with a dashed line) through a partially deployed position (shown with a solid line).
  • the hydrofoil 100 is then retracted from a partially deployed position (shown with a dashed line) to a fully stowed position (shown with a solid line) up through the hull 108 of the boat.
  • the opposite process is then used to redeploy the hydrofoil 100.
  • the fully deployed position may be used as a "light wind” position for the hydrofoil 100 and the partially deployed position may be used as a "strong wind” position for the hydrofoil 100 and/or when sailing downwind.
  • Figure 5 is a side view of the hydrofoil 100 of figure 1A when mounted on the hull 108 of a boat at a pivot point 118.
  • the attack angle of the hydrofoil 100 can be altered by pivoting the hydrofoil 100 about an axis that runs athwartships through the pivot point 118.
  • Figure 6 illustrates the angles between the various sections of a fixed hydrofoil 100.
  • the angle ⁇ between the general direction of extension of the first section 102 and the general direction of extension of the third section 106 is 40°
  • the angle ⁇ between the general direction of extension of the third section 106 and the general direction of extension of the second section 104 is 110°.
  • the angle between the directions in which the first and second hydrodynamic forces act, and also the angle between the notional planes of the first and second sections is therefore 30°.
  • These angles mean that the second section 104, in addition to extending away from the centreline of the boat, also extends slightly upwards towards the hull 108 of the boat. This provides the boat with good strong wind stability, i.e. when the majority of the first section 102 is lifted out of the water.
  • Figure 7A illustrates the angles between the various sections of a rotatable hydrofoil 100.
  • the first section 102 is not as steep as the first section in the embodiment of Figure 6 and the second section 104 is more horizontal than the second section in the embodiment of Figure 6 .
  • the angle ⁇ between the general direction of extension of the first section 102 and the general direction of extension of the third section 106 is 45° and the angle ⁇ between the general direction of extension of the third section 106 and the general direction of extension of the second section 104 is 90°.
  • the angle between the directions in which the first and second hydrodynamic forces act, and also the angle between the notional planes of the first and second sections, is therefore 45°.
  • This arrangement provides the boat with good light wind performance, i.e. when the majority of the first section is in the water (see Figure 7A ), because the first and second sections can contribute significantly to the upward lift.
  • the hydrofoil can be rotated such that the first section 102 is steeper and the second section 104 extends slightly upwards towards the hull 108 of the boat (see Figure 7B ).
  • This provides the boat with good strong wind stability.
  • the hydrofoil 100 may be rotated such that the first section 102 extends vertically downwards away from the hull 108 of the boat and therefore no longer extends generally towards the centreline of the boat.
  • Figure 8 illustrates the angles between the various sections of an alternative fixed hydrofoil 100.
  • the angle ⁇ between the general direction of extension of the first section 102 and the general direction of extension of the third section 106 is 45° and the angle ⁇ between the direction of extension of the third section 106 and the direction of extension of the second section 104 is 135°.
  • the angle between the directions in which the first and second hydrodynamic forces act, and also the angle between the notional planes of the first and second sections, is therefore 0°.
  • This means that the second section 104 extends upwards towards the hull 108 of the boat to the same degree that the first section 102 extends downwards away from the hull 108 of the boat.
  • This provides the boat having the fixed hydrofoil with excellent strong wind stability and allows the first and second sections to provide hydrodynamic forces which act in generally the same direction.
  • Figures 9A-9C show cross-sectional views of hydrofoil sections having movable or deformable parts. The features of these embodiments can be applied to the first section, second section and/or third section of the hydrofoils 100 described above.
  • the hydrofoil section shown has an upstream static part 120 and a downstream moveable part 122 that can be moved in use so as to alter the hydrodynamic properties of the section.
  • the moveable part 122 is pivotable about an axis which is towards the upstream end of the moveable part 122.
  • the hydrofoil section shown has an upstream static part 120 and a downstream deformable part 124 which can be deformed in use so as to alter the hydrodynamic properties of the section.
  • the deformable part 124 is flexibly connected to the static part 120 by a strut 125 and by the outer casing of the section.
  • the hydrofoil section shown also has an upstream static part 120 and a downstream deformable part 124 which can be deformed in use so as to alter the hydrodynamic properties of the section.
  • the deformable part 124 comprises a cavity 126 within the casing of the section.
  • the cavity 126 is fluidly connected to an opening 128 at the downstream end of the section.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Wind Motors (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
EP15151097.1A 2014-01-14 2015-01-14 Hydroptère Withdrawn EP2894090A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1400558.1A GB2522066B (en) 2014-01-14 2014-01-14 A sailboat with a hydrofoil having first and second hydrodynamic sections

Publications (1)

Publication Number Publication Date
EP2894090A1 true EP2894090A1 (fr) 2015-07-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP15151097.1A Withdrawn EP2894090A1 (fr) 2014-01-14 2015-01-14 Hydroptère

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EP (1) EP2894090A1 (fr)
GB (1) GB2522066B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3051433A1 (fr) * 2016-05-20 2017-11-24 Seair Dispositif de precision de calage angulaire d'aile de derive sur une coque de bateau
WO2019064106A1 (fr) * 2017-09-26 2019-04-04 Enata Investment Corporation Pte. Ltd. Bateau moteur à foils rétractables par basculement
US10875606B2 (en) 2017-02-17 2020-12-29 BA Technologies Limited Powerboat

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1410875A (en) * 1920-05-07 1922-03-28 Bell Alexander Graham Hydrodrome, hydroaeroplane, and the like
US2906229A (en) * 1955-12-23 1959-09-29 Jr Harold Boericke Hydrofoil
US3094960A (en) * 1959-11-19 1963-06-25 Thomas G Lang Hydrofoil for water craft
US3651775A (en) * 1969-08-18 1972-03-28 Helmut Kock Hydrofoil system
CH635040A5 (en) * 1981-06-29 1983-03-15 Georg Jiri Chvojka Hydrofoil boat
EP0118737A2 (fr) * 1983-02-04 1984-09-19 Hitachi Zosen Corporation Ailerons de stabilisation pour des bateaux à ailes portantes
DE10306460A1 (de) * 2003-02-17 2004-08-26 Flemming, Jörg, Dipl.-Ing. Tragflügel-Planke für ein Segelboot
DE102009050823A1 (de) * 2009-10-27 2011-04-28 Heinig, Jürgen, Dr.-Ing. Anordnung eines Hochgeschwindigkeits-Wasserfahrzeuges und Verfahren zum Betrieb desselben
FR2972172A1 (fr) * 2011-03-01 2012-09-07 Nc Race Boats Bateau equipe d'au moins une surface porteuse partiellement immergee

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8720354B2 (en) * 2011-06-22 2014-05-13 Hobie Cat Co. Quadfoiler

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1410875A (en) * 1920-05-07 1922-03-28 Bell Alexander Graham Hydrodrome, hydroaeroplane, and the like
US2906229A (en) * 1955-12-23 1959-09-29 Jr Harold Boericke Hydrofoil
US3094960A (en) * 1959-11-19 1963-06-25 Thomas G Lang Hydrofoil for water craft
US3651775A (en) * 1969-08-18 1972-03-28 Helmut Kock Hydrofoil system
CH635040A5 (en) * 1981-06-29 1983-03-15 Georg Jiri Chvojka Hydrofoil boat
EP0118737A2 (fr) * 1983-02-04 1984-09-19 Hitachi Zosen Corporation Ailerons de stabilisation pour des bateaux à ailes portantes
DE10306460A1 (de) * 2003-02-17 2004-08-26 Flemming, Jörg, Dipl.-Ing. Tragflügel-Planke für ein Segelboot
DE102009050823A1 (de) * 2009-10-27 2011-04-28 Heinig, Jürgen, Dr.-Ing. Anordnung eines Hochgeschwindigkeits-Wasserfahrzeuges und Verfahren zum Betrieb desselben
FR2972172A1 (fr) * 2011-03-01 2012-09-07 Nc Race Boats Bateau equipe d'au moins une surface porteuse partiellement immergee

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3051433A1 (fr) * 2016-05-20 2017-11-24 Seair Dispositif de precision de calage angulaire d'aile de derive sur une coque de bateau
US10875606B2 (en) 2017-02-17 2020-12-29 BA Technologies Limited Powerboat
WO2019064106A1 (fr) * 2017-09-26 2019-04-04 Enata Investment Corporation Pte. Ltd. Bateau moteur à foils rétractables par basculement
US11577806B2 (en) 2017-09-26 2023-02-14 Enata Investment Corporation Pte. Ltd. Motor boat with foils which are retractable by tilting

Also Published As

Publication number Publication date
GB2522066A (en) 2015-07-15
GB2522066B (en) 2016-07-06
GB201400558D0 (en) 2014-03-05

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