EP2988992A1 - A stabilizing device for a ship or craft, a ship comprising such device, a method for moving the stabilizing device - Google Patents
A stabilizing device for a ship or craft, a ship comprising such device, a method for moving the stabilizing deviceInfo
- Publication number
- EP2988992A1 EP2988992A1 EP14721510.7A EP14721510A EP2988992A1 EP 2988992 A1 EP2988992 A1 EP 2988992A1 EP 14721510 A EP14721510 A EP 14721510A EP 2988992 A1 EP2988992 A1 EP 2988992A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fin
- hull
- opening
- connecting body
- hatch
- 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.)
- Granted
Links
- 230000000087 stabilizing effect Effects 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims description 10
- 239000003381 stabilizer Substances 0.000 claims abstract description 44
- 230000033001 locomotion Effects 0.000 claims description 26
- 230000010355 oscillation Effects 0.000 claims description 16
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 230000009471 action Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000368 destabilizing effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
- B63B39/06—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water
Definitions
- the present invention applies in the field of the anti-roll stabilizing devices, for a ship or craft, based on the hydrodynamic action of fins of a retractable type.
- a known and very widespread system is the stabilization carried out by stabilizer fins that, exploiting the hydrodynamic characteristics of the wing profiles and using the modern control systems, are able to sensibly reduce the roll movements.
- stabilizer fins of the "retractable" type are known, which, under favourable sea weather conditions, are retracted into special structural recesses that are obtained in the bottom.
- the known stabilizing devices with a retractable fin suffer the drawback of opposing a resistance to the ship forward motion during the entire service life of the ship, both in the case of an extended fin, and in the case of a retracted fin.
- the object of the present invention is to devise and provide a stabilizing device having retractable 0
- the task of the present invention is to provide a stabilizing device for a craft or ship comprising a stabilizer fin that is retractable into a recess in the bottom, while allowing considerably reducing or eliminating the hydrodynamic resistance exerted by the water against the recess at any positions of the fin.
- Such object is achieved by a ship comprising such stabilizing device and by a method for moving such stabilizing device.
- FIG. 1 illustrates a perspective view of a stabilizing device according to the invention, in which the fin is in the retracted position and the hatches are closed;
- FIG. 2 illustrates a perspective view of the device of Fig. 1, in which the fin is in the extracted position and the hatches are open;
- FIG. 3 illustrates a perspective view of a device according to the invention with the fin in the extended position, provided with handling means;
- FIG. 4 illustrates a perspective view of the device according to the invention with the fin in the extended position, in which the holding compartment is not shown for the sake of clarity;
- FIG. -5 illustrates a perspective view of the device according to the invention in which the fin is in an intermediate position between the extended position and the retracted position;
- FIG. 6 shows only schematically a cross-section of a ship having two stabilizing devices according to the invention
- FIG. 7 illustrates a perspective view of the device according to a further embodiment in which the fin provided with a flap is in the extended position and a first hatch partially closes the opening having the largest transverse dimensions of the hull;
- FIG. 8 illustrates a perspective view of the device according to a further embodiment in which the fin not provided with a flap is in the extended position, and a first hatch partially closes the opening having the largest transverse dimensions of the hull;
- FIG. 9 illustrates a perspective view of the device according to a further embodiment in which the fin is in the retracted position and a second hatch partially closes the opening having the largest transverse dimensions of the hull;
- FIG. 10 illustrates a perspective view of the device according to a further embodiment in which the fin, with opposite inlet edge and outlet edge without a flap, is in the extended position, and a first hatch partially closes the hull opening;
- FIG. 11 illustrates a perspective view of the device according to a. further embodiment in which the fin, with opposite inlet edge and outlet edge provided with a flap, is in the extended position and a first hatch partially closes the hull opening.
- a "longitudinal axis of the ship” to indicate an axis that connects the bow with the stern of the ship;
- a "hull” will be referred to, to indicate the set of all the structures composing the ship body;
- a "bottom” to indicate the surface externally defining the hull beneath the floating line;
- a "keel” to indicate the essential continuous element of the hull, extending longitudinally from the stern to the bow.
- a stabilizing device according to the invention for a ship or craft, is generally indicated with the reference 1.
- the stabilizing device 1 comprises a stabilizer fin 10 movably connected to the hull, and movable between a retracted position in which the ' fin 10 is contained in a recess 30 extending in the hull starting from the bottom, and an extracted position in which the fin 10 projects from the ship bottom 2 through this recess.
- the bottom has an opening 31, 32 allowing the sticking out of the fin from the bottom, and the recess 30 originates from this opening 31, 32.
- the recess is formed by a holding compartment 30 defining the recess itself, in which a wall of the holding compartment comprises the opening 31, 32.
- Such a stabilizer fin 10 has the task of stabilizing the ship during the navigation thereof, reducing the roll movement of the same ship as much as possible.
- the stabilizing device is associated to the ship at least in a pair.
- two stabilizing devices are arranged on opposite sides of the ship and symmetrically with respect to a symmetry plane passing through the ship keel.
- the two symmetrically arranged devices are configured to mutually cooperate, for example, by a control and actuators that rotate the fins in a controlled way about an oscillation axis 0-0 and in an interval of angular positions ranging between predetermined maximum values.
- each of the two stabilizing devices acts in a coordinated manner reducing the undesired roll of the ship along a longitudinal axis of the ship itself.
- each stabilizing device 1 is operatively submersed throughout the use thereof, so as to act dynamically against the destabilizing thrust exerted by the water during navigation or when stationing.
- such a fin 10 may exert its braking action with respect to the roll movement even when the ship 2 is not travelling, but it is stationed at a position.
- the fin 10 of the stabilizing device may have transversally a wing profile, and extends mainly in a main extension direction transversal to the bottom 3, for example, substantially orthogonal to the bottom 3, so as to optimize the hydrodynamic forces exchanged with the water in which it is immersed.
- This main extension direction can be substantially parallel to the oscillation axis 0-0, or coincident with the oscillation axis 0-0.
- the holding compartment 30 has a box-like shape, having a bottom wall 35 opposite the opening 31, 32, and side walls 36 connecting the bottom wall 35 to the opening 31, 32.
- the side walls are in the number of four, substantially parallel two by two.
- the holding compartment 30 is waterproof, in other words, it is configured so as not to allow the passage of water through it.
- the holding compartment 30 comprises a front wall 37 opposite said bottom wall 35, and said front wall is shaped according to the profile of the ship bottom 3 in an assembling position of the stabilizing device 1, and the front wall 37 comprises the opening 31, 32.
- the holding compartment 30 is a piece that can be secured to the bottom at an opening specifically obtained in the bottom.
- the front wall 37 can be mounted in a corresponding hole obtained in the ship bottom 3, said hole having the same shape of an outer contour 38 of the front wall 37.
- the holding compartment 30 can be mounted by aligning the front wall 37 to the bottom 3 with continuity of shape, and firmly securing such front wall 37 to the bottom, for example, by welding.
- the front wall 37 may extend outwardly beyond the side walls 36 and transversally to the side walls 36 forming an assembling flange 39.
- Such assembling flange 39 can be secured to the bottom at a hole in the bottom having the same shape of the outer edge 38 of the assembling flange 39 so that the front wall 37, together with the flange 39, are flush with the bottom 3, with continuity of shape. .
- the holding compartment 30 can be secured to the bottom 3 by overlapping the flange 39 to the bottom 3.
- the holding compartment is made in a single piece with the bottom 3 itself.
- the stabilizing device 1 comprises fin handling means 50 configured to move the fin 10 between an extended position, in which the fin 10 projects from the bottom 3 through the opening 31, 32, and a retracted position, in which the fin 10 is retracted into the holding compartment 30.
- the fin handling means 50 are rotation means and are configured to rotate the fin 10 between the retracted position and the extended position with respect to the holding compartment 30 about a rotational axis R-R.
- the rotational axis R-R lies on a plane orthogonal to the ship longitudinal axis, and particularly, but not necessarily, substantially parallel to the bottom 3 at the point where it is mounted.
- the stabilizing device comprises a connecting body 20 suitable to connect the stabilizer fin 10 to the hull 2, or, alternatively, to the holding compartment 30, in which the connecting body 20 supports the fin 10 and it can be rotated together with the fin 10 with respect to the hull 2 between an extended position of the fin 10, in which the fin 10 projects from the hull 2 through the opening 31, 32, and a retracted position of the fin 10, in which the fin 10 fully reenters the hull 3 through the opening 31, 32.
- the stabilizing device 1 comprises a first closing hatch 62 integrally secured to the connecting body 20, suitable to at least partially close the opening 31, 32 when the fin 10 is in the extended position.
- the first hatch 62 is shaped so as to restore the shape and continuity of the bottom 3 when the fin 10 is in said extended position.
- the stabilizing device 1 comprises a second hatch 61 integrally secured to the connecting body 20, in which said second hatch 61 is suitable to at least partially close the opening 31, 32 when the fin 10 is in said retracted position.
- the second hatch 61 is shaped with an outer surface thereof suitable to restore the shape and continuity of the bottom 3 when the fin 10 is in the retracted position.
- the first hatch 62 and the second hatch 61 are substantially the same one to the other and arranged mutually angled according to an angle corresponding or substantially equal to the maximum angular displacement of the connecting body 20 between a first angular position thereof corresponding to the extended fin and a second angular position thereof corresponding to the retracted fin.
- the opening 31, 32 is formed by an opening portion allowing the sticking out of the connecting body 31, and a contiguous opening portion 32 allowing the sticking out of the fin 10.
- the first hatch 62 or, in addition, the second hatch 61 is suitable to at least partially close the opening portion allowing the sticking out of the connecting body 31.
- the first hatch 62 defines a first outer accompanying surface 42, configured to restore the bottom 3 shape at the opening portion 31, allowing the sticking out of the connecting body 20, when the first hatch 62 is closed.
- the second hatch 61 defines a second outer accompanying surface 41, configured to restore the bottom 3 shape at the opening portion 31, allowing the sticking out of the connecting body 20, when the second hatch 61 has reentered.
- first hatch 62 and the second hatch 61 are made in a single piece with the connecting body 20, for example, they form a first side and a second side of the connecting body 20.
- the fin handling means 50 comprise a linear actuator 51, for example, a hydraulic cylinder.
- the linear actuator.51 has a first end 52 hinged at a stationary point 53, for example, belonging to the holding compartment 30, or, alternatively, at a point of the hull 2, and a second end 54 hinged at an arm 55 integral to the connecting body 20, so that a rotation of the connecting body 20 corresponds to a linear movement of 60250
- the hydraulic cylinder 51 is hydraulically connected to a hydraulic control unit 56.
- the control unit 56 is configured to drive the movements of the hydraulic cylinder, hence the movements of the connecting body 20, hence the movements of the fin 10 between the retracted position and the extracted position.
- the stabilizing device comprises at least one openable shutter 43, 44 configured to close the opening portion 32 not affected by the hatches 61, 62 when said stabilizer fin 10 is in the extended or retracted position.
- the at least one openable shutter 43, 44 is connectable to the hull 2 by a waterproof passage bulkhead that allows the rotation thereof so as to keep the opening 32 open during the movement of the stabilizer fin 10 between the extended position thereof and the retracted position thereof.
- the at least one shutter 43, 44 is hinged to the front wall 37 or the holding compartment 30, along a major side thereof.
- shutters 43 and 44 there are two distinct shutters 43 and 44 configured to mutually cooperate in order to close or open the second portion 32 of the compartment 30 opening.
- the two shutters 43 and 44 are configured to move in a simultaneous or mutually synchronized manner.
- the at least one shutter 43, 44 comprises an automatic opening and closure actuator 45.
- the stabilizing device 1 comprises a support shaft, or neck 12 suitable to connect the stabilizer fin 10 to the connecting body 20, in which said shaft or neck has its axis coincident with the oscillation axis 0-0.
- the first hatch 62 surrounds the support shaft, or neck 12, allowing to close the opening 31, 32, with the fin in the extended positio .
- the stabilizing device 1 comprises oscillation means to rotate the fin 10 about the oscillation axis 0-0, when the fin is in the extended position, to oppose the roll motions.
- said oscillation means comprise an oscillation actuator of the hydraulic type, which is actuated by a hydraulic control unit (not shown in the figures) or the electric type.
- the oscillation shaft is a support shaft or support neck that is able to oscillate, or, in other words, to bring the fin 10 to rotate about the oscillation axis or rotational axis 0-0.
- the stabilizing device comprises motorized means for the rotation of the stabilizer fin about the axis 0-0 of the support shaft, or neck 12 of the stabilizer fin 10 to oppose in use the ship roll motion.
- the axis 0-0 of the support shaft, or neck 12 of the stabilizer fin 10 is transversal to the fin rotational axis R-R.
- said stabilizing device comprises a control, preferably fed back as a function of the measured instantaneous oscillations of the ship, so configured as to drive the motorized rotation means .
- said control is a control fed back based on a signal derived from the measurement of the speed and the instantaneous accelerations of the ship.
- the fin 10 may comprise a flap 71 hinged to the fin 10 along an edge 72 of the fin, for example, along a rear edge of the fin 10 with respect to the ship navigation direction.
- the fin rear edge 72 is rectilinear.
- the flap 71 comprises motorized or non-motorized actuating means (not shown) .
- a ship or craft comprising at least one pair of stabilizing devices 1 as described above.
- the method comprises a step of providing a connecting body 20 suitable to connect the stabilizer fin 10 to the hull 2, said connecting body 20 supporting said fin 10.
- the method comprises a step of providing a first closing hatch 62 integrally secured to the connecting body 20, said first hatch 62 being suitable to at least partially close an opening portion 31 allowing the sticking out of the connecting body 20.
- the method comprises a step of rotating said connecting body 20 together with 0250
- said stabilizer fin 10 with respect to the hull 2 between a retracted position of said fin 10, so that said fin 10 goes completely back into said hull 2 through said opening 31, 32, and an extended position of said fin 10, so that said fin 10 projects from said hull 2 through said opening 31, 32 in said bottom 3, at least partially closing said opening portion allowing the sticking out 31 of the connecting body 20 when said fin 10 is in the extended position by said first hatch 62, arranging said first hatch 62 flush with said bottom 3, and restoring the bottom 3 shape at the opening 31, 32.
- a further step is provided for, of providing at least one openable shutter 43, 44 movably connected to the holding compartment 30 to keep an opening portion 32 closed, allowing the sticking out of the fin when the fin 10 is kept in the extended position and when the fin 10 is kept in the retracted position, and to keep the one opening portion 32 open, allowing the sticking out of the fin during the movement of the fin 10 between the extended position and the retracted position.
- the method for moving the fin 10 from the retracted position to the extended position comprises the steps of:
- the method for moving the fin 10 from the extended position to the retracted position comprises the steps of:
- the stabilizing device for a ship or craft according to the invention allows achieving important advantages.
- such a device allows eliminating at any moment of the operative life of the ship in which it will travel at a non-zero speed, the resistance aliquot due to the presence of recesses in the bottom with consequent reduction of the fuel consumptions.
- the presence of the first hatch and the second hatch allows not interrupting or altering the motion of the water along the bottom, limiting to the utmost the formation of turbulent movements and considerably reducing the ship drag.
- the hatches 41, 42 secured to the connecting body 20 ensure the achievement of an extremely sturdy structure, capable of resisting the high mechanical action exerted by the medium (water) .
- Another advantage is the considerable decrease of the cavitation effect that could be started at the mouth of the recess opening, if it were not closed by the first or the second accompanying surfaces.
- Another advantage of the invention is to provide a stabilizing device for crafts or ships that allows at the same time to close the fin holding compartment when the fin is extracted, while allowing the rotation of the fin about an oscillation axis thereof.
- a fin 10 provided with flap 71 has, in the extended position, a first hatch 42 that partially closes the opening 31 having the largest transverse dimensions of the hull.
- a fin 10 that is not provided with a flap is in the extended position and a first hatch 42 partially closes the opening 31 having the largest transverse dimensions of the hull.
- a fin 10 is in the retracted position and a second hatch 43 partially closes the opening 31 having the largest transverse dimensions of the hull.
- a fin 10 with opposite inlet edge 80 and outlet edge 72 without a flap is in the extended position and a first hatch 42 partially closes the hull opening 31;
- a fin 10 with opposite inlet edge 80 and outlet edge 72 provided with a flap 71 is in the extended position and a first hatch 42 partially closes the hull opening 31.
- said stabilizer fin 10 comprises a shaped profile having a front edge with respect to the ship navigation direction, or inlet edge 80, and a rear edge with respect to the ship navigation direction, or outlet edge 72. Said outlet edge 72 faces said opening 32 during the rotation with respect to the hull 2 to bring the fin 10 to said retracted position.
- said connecting body 20 rotates together with said fin 10 with respect to the hull 2 between an extended position of said fin 10, so that said fin 10 projects from said hull 2 through said opening 31, 32 in said bottom, and a retracted position of said fin 10, so that said fin 10 rotates (according to the arrow R) with the current with respect to the usual navigation direction of the ship travelling forward (according to the arrow V) .
- the fin 10 comprises a flap 71 hinged to the fin 10 along a fin edge 72.
- said fin edge is the rear edge or outlet edge 72 of the fin 10 with respect to the ship navigation direction V.
- the flap 71 comprises actuating means for the rotation thereof with respect to the fin 10 body.
- said stabilizer fin 10 comprises a shaped profile having a front edge with respect to the ship navigation direction, or inlet edge 80, and a rear edge with respect to the ship navigation direction, or outlet edge 72, and in which said outlet edge 72 faces the side opposite said opening 32 during the rotation R with respect to the hull 2 to bring the fin 10 to said retracted position.
- said connecting body 20 rotates together with said fin 10 with respect to the hull 2 between an extended position of said fin 10, so that said fin 10 projects from said hull (2) through said opening 31, 32 in said bottom, and a ; retracted position of said fin 10, so that said fin 10 rotates (according to the arrow R) counter-current with respect to the usual navigation direction of the ship travelling forward (according to the arrow V) .
- the fin 10 comprises a flap 71 hinged to the fin 10 along a fin edge 72 and said fin edge is the rear edge or outlet edge 72 of the fin 10 with respect to the ship navigation direction facing the side opposite said opening 32 during the rotation R with respect to the hull 2 to bring the fin 10 to said retracted position.
- the flap 71 comprises actuating means for the rotation thereof with respect to the fin 10 body.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Motorcycle And Bicycle Frame (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000695A ITMI20130695A1 (en) | 2013-04-26 | 2013-04-26 | STABILIZATION DEVICE FOR SHIP OR BOAT, SHIP INCLUDING THIS DEVICE, METHOD TO MOVE THE STABILIZATION DEVICE |
PCT/IB2014/060250 WO2014174390A1 (en) | 2013-04-26 | 2014-03-28 | A stabilizing device for a ship or craft, a ship comprising such device, a method for moving the stabilizing device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2988992A1 true EP2988992A1 (en) | 2016-03-02 |
EP2988992B1 EP2988992B1 (en) | 2017-03-22 |
Family
ID=48793399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14721510.7A Active EP2988992B1 (en) | 2013-04-26 | 2014-03-28 | A stabilizing device for a ship or craft, a ship comprising such device, a method for moving the stabilizing device |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2988992B1 (en) |
JP (1) | JP6595453B2 (en) |
IT (1) | ITMI20130695A1 (en) |
WO (1) | WO2014174390A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3032683B1 (en) | 2015-02-17 | 2017-05-26 | Elisabeth Fournier | SHIP STABILIZATION SYSTEM |
JP6651421B2 (en) * | 2016-07-14 | 2020-02-19 | 三菱造船株式会社 | Vessel and method of damping |
DE102019201505A1 (en) | 2019-02-06 | 2020-08-06 | Skf Marine Gmbh | Active stabilization device and method |
DE102019201501A1 (en) | 2019-02-06 | 2020-08-06 | Skf Marine Gmbh | Active stabilization device and method |
JP7203633B2 (en) * | 2019-02-22 | 2023-01-13 | 三菱重工マリンマシナリ株式会社 | Control device, ship equipped with the same and control method of ship |
CN112224353B (en) * | 2020-10-29 | 2021-12-10 | 广船国际有限公司 | Fin stabilizer apron and boats and ships |
CN113148029B (en) * | 2021-04-25 | 2022-09-09 | 重庆京穗船舶制造有限公司 | Portable vehicle-mounted combined boat and using method thereof |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB802105A (en) * | 1954-10-13 | 1958-10-01 | Deutsche Werft Ag | Improvements in or relating to devices for damping the rolling movement of ships |
GB825134A (en) | 1955-06-24 | 1959-12-09 | Licentia Gmbh | Stabilising fins for ships and aircraft |
GB1352308A (en) | 1969-12-19 | 1974-05-08 | Vosper Thornycroft Ltd | Stabilizer system for a water-borne vessel |
DE2121091A1 (en) * | 1971-04-29 | 1972-11-09 | Neuenfelder Maschinenfabrik G.M.B.H., 2101 Hamburg | Device for opening and closing side flaps, in particular ship side flaps |
US3837313A (en) | 1973-06-25 | 1974-09-24 | Boeing Co | Hydrofoil bow door |
GB1512956A (en) * | 1974-08-20 | 1978-06-01 | Sperry Rand Ltd | Ship stabilising systems |
FR2538340B1 (en) * | 1982-12-28 | 1986-05-02 | Havre Chantiers | MOBILE SHUTTER SHUTTER FOR SHIP HULL WITH STABILIZING FINS |
JPH01254482A (en) * | 1988-04-05 | 1989-10-11 | Mitsui Eng & Shipbuild Co Ltd | Control method for fin stabilizer |
JPH01162895U (en) * | 1988-05-06 | 1989-11-13 | ||
JPH0381198U (en) * | 1989-12-07 | 1991-08-20 | ||
FR2736888B1 (en) | 1995-07-21 | 1997-09-26 | Havre Chantiers | ANTI-TANGAGE STABILIZATION DEVICE FOR VESSELS |
JPH09323697A (en) | 1996-06-07 | 1997-12-16 | Mitsubishi Heavy Ind Ltd | Marine fin stabilizer device |
JPH11129986A (en) | 1997-10-31 | 1999-05-18 | Mitsubishi Heavy Ind Ltd | Maritime fin stabilizer |
DE102008011953B3 (en) * | 2008-03-01 | 2009-07-02 | Gabler Maschinenbau Gmbh | flap control |
-
2013
- 2013-04-26 IT IT000695A patent/ITMI20130695A1/en unknown
-
2014
- 2014-03-28 JP JP2016509566A patent/JP6595453B2/en active Active
- 2014-03-28 WO PCT/IB2014/060250 patent/WO2014174390A1/en active Application Filing
- 2014-03-28 EP EP14721510.7A patent/EP2988992B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
JP2016516635A (en) | 2016-06-09 |
WO2014174390A1 (en) | 2014-10-30 |
ITMI20130695A1 (en) | 2014-10-27 |
JP6595453B2 (en) | 2019-10-23 |
EP2988992B1 (en) | 2017-03-22 |
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