US2550752A - Roll-stabilizing oscillating fin installation on ships - Google Patents

Roll-stabilizing oscillating fin installation on ships Download PDF

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Publication number
US2550752A
US2550752A US652966A US65296646A US2550752A US 2550752 A US2550752 A US 2550752A US 652966 A US652966 A US 652966A US 65296646 A US65296646 A US 65296646A US 2550752 A US2550752 A US 2550752A
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Prior art keywords
fin
main
fins
auxiliary
movement
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US652966A
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English (en)
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Allan James Foggo
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Brown Brothers and Co Ltd
William Denny and Brothers Ltd
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Brown Brothers and Co Ltd
William Denny and Brothers Ltd
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    • 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 relates to anti-rolling apparatus or roll stabilizers for ships. More ',;'particularly the invention relates to the type of apparatus including lateral fins arrang'edator ebdfijt; the turn of the bilge of the ship and in which mechanism is provided for imparting tilting; movement to the fins about axes disposed athwartship to produce anti-rolling couples on a travelling ship.
  • each fin includes a main and auxiliary fin in hinged connection with each other along a line parallel with the main axis about which the fin may be tilted as a whole and in which means are provided for tilting the auxiliary finrelative to the main fin in the same direction as but of greater amplitude of movement than the tilting movement of the main fin thereby providing an arrangement inwhich'the auxiliary It therefore an object of the present inven- I fin augments the action of the main fin to increase the efliciency of the fin as a whole.
  • An additional object is to provide in an arrangement in which the fins are retractable within the hull and means for extending and retracting the fins to provide for ease of operation of the fin including a two part shaft, one carrying the fin and mounted for axial movement relative to the other and the other part being in splined connection with the axially movable part and capable of oscillation to impart tilting movements to the fin as a whole. 7 a
  • a further object is to provide mechanical means operatively connected to the auxiliary fin and responsive to the tilting movement of the main fin to impart tilting movement to the auxiliary fin relative to the main fin while the main fin is being tilted.
  • Figures 1 and 1a are views in cross-sectional elevationof respectively the port and starboard halves of the hull of a ship in which the inven tion is provided;
  • Figures 2 and 2a are corresponding plan views
  • Figure 3 is a view in section on a plane indicated by the line III-III of Figure 1a;
  • Figure 4 is a fragmentary view in sectional elevation showing on a larger scale certain details of construction
  • Figure 5 is a side elevation of a retracted fin unit tilted downwards to show details of one form of a mechanical linkage arrangement for tilting the auxiliary fin;
  • Figure 6 is a view similar to Figure 5 with the fin unit in the neutral position
  • FIG. 7 is a diagrammatic representation of an alternative construction of fin unit
  • Figures land 9 being fragmentary plan views showing two alternative manners of applying the invention to the hull of a ship;
  • FIGS 10, 11 and'lz are diagrammatic repre sentations of a fin unit in end elevation showin various relative positions assumed by the main and auxiliary fins and the parts of a linkage mechanism for tilting the auxiliary fin;
  • Figures 13 and 14 are diagrammatic representations of a non-retractable fin unit employing a toothed sector linkage for tilting the auxiliary fin, Figure 13 being a view in end elevation and Figure 14 being a plan view.
  • the stabilizing fin comprises a main or forward fin part I. and an auxiliary or rearward fin part 2.
  • the parts are hingedly connected to each other along an axis indicated by the reference numeral 3 which is shown as parallel with the axis 4 constituting themain axis about which the fin as a whole is tilted.
  • the axis 3 about which the two fin parts are hinged to one another is disposed at a position in the vicinity of the aft edge of the main fin part I and at a position between 0.20 and 0.30 of the total distance between the leading edge of the main fin I and the aft or trailing edge of the auxiliary fin 2 and which disposition of the axis 3 results in the auxiliary fin 2 having fore and aft dimensions of from A; to 7 7 of the corresponding dimensions of the main fin.
  • the axis 5 about which the fin as a whole may be tilted is centered a suitable distance for balance behind the leading edge 6 of the fin part i at a position between 0.30 and 0.35 of the total combined fore and aft dimensions of the main and auxiliary fins, or in other words between the edges 5 and 6.
  • a square sectioned oscillatory shaft is which is also tubular, and on the end of this shaft there is provided a piston l5 with. which is associated packing iii, the piston being secured on the shaft by a nut IT.
  • the piston is circular in section and within the bore of the shaft Hi there is located a tube i8 leaving a space 59 between its external surface and the inner surface of the squared shaft, the tube itself providing a further passage 20.
  • passages are in communication with ports 2 l, 22 respectively connected through a reversing valve or system of valves with a pump by which fluid under pressure may be admitted to one or other side of the piston, fluid on the opposite side of the piston being allowed to escape.
  • the fin According into which end of the chamber 23 provided in the shaft 1 fluid under pressure is introduced, the fin will in the constructions illustrated in Figures 1 to 6, be extended or retracted.
  • One of these arms is connected by a link 25 with an arm 26 on a shaft 21, while the corresponding arm 24a is connected by a link 25a with an arm 26a on the other end of the shaft 21.
  • the hinge pin 34 is rigidly connected with the arm 35 serving as atiller for the auxiliary fin 2.
  • This arm constitutes one element ofthe mechanical means that effects the movement of the auxiliary fin relative to the main fin and by means of a pin 36 the outer end of the arm 35 is connected with one end of a link or movable part 3?, the other end of which is pivoted on a fixed pin or pivot 38 mounted on the cross head l2. It is noted, therefore, that as the fins are extended the pin-38 constitutes an element of the motion imparting means that is fixedly supported with relation to and movable with each fin upon extention.
  • the maximum angle of tilt provided for this fin will generally not exceel 20 from a neutral positionand the tilting movement of the auxiliary fin-can be such that it will be rotated about its axis or hinge connection with the main fin through an angle on the order of between 1 and 1 times the angle through which the main fin is rotated and in the same direction of movement.
  • the auxiliary fin will move. through an angle of between 25 and 30 from the neutral position when the main fin is moved through an angle of 20 from the neutral position.
  • the trailing portion of the fin is shown hinged to theforward portion so that no gap is left between the two portions thereof.
  • the hinge line is in close proximity to the leading edge of the, auxiliary fin and the trailing edge of the main fin, in which case in effect, the surfaces of the two fin portions provide substantially uninterrupted surfaces even when tilted relative to each other.
  • FIG. 7 An alternative, construction is illustrated in Figure 7 where the main or forward part i and the trailing portion 2 are hinged together along a line which lies forward of the rearward edge of the main fin so that when the auxiliary fin rotates relative to the main-fin a slot or gap 39 will be formed between the leading edge of the auxiliary fin and the trailing edge of the main fin.
  • a plurality of fins of restricted span may be provided and these fins which are indicated by the reference is and are each constituted by forward and trailing sections are located on the line of the bilge keel M as shown in Figures 8 and 9.
  • guard 42 is provided on the adjacent ends of. the bilge keels between which a space 43 is left for the accommodation of the fins.
  • the bilge keel is also interrupted but in this case a plate 44 is provided connecting the two portionsof the bilge keel, and stifieners as are provided between this plate and the skin 46 of the hull.
  • the housings into which the fins may be the fin is retracted by an end plate 5
  • the auxiliary fin 2 is rigid with hinge pin or shaft 34 and a link or arm 54 acting as a tiller, the other end of link 54 being connected to or integral with a toothed sec-
  • the latter sector is concentric with axis 4, namely, the axis about which the main fin I is tilted, but is secured from rotation, conveniently by fastening to the side of the ship.
  • linkage as herein utilized is not to be limited in its meaning to denoting a system of links but is utilized in a broader sense as to denote and mean the act of linking or coupling the auxiliary fin for movement with the main fin.
  • the coug plingeffect is obtained by the meshing of the teeth on the respective sectors '53, 55. It is fur.- ther to be noted that in connection with Figures 10 to 12 the arrangement provides three particular elements. is movable relative to the main fin and rigid with the auxiliary fin, the fixed pivot pin 38 and the link 31 pivotally connected between the outer end of the arm 35 and the pivot 38.
  • the arm 54 which is rigid with the shaft 34 consisting of the pivoting axis of the auxiliary fin 2 relative to the main fin i has embodied with it the sector 53 meshing with the fixed sector 55.
  • fins as illustrated may be arranged either to be permanently extended beyond the line of the hull or be of the retractable type capable of being withdrawn within the hull within the housing provided'therefore.
  • the plate at the inner end of the main fin will be of a size suitable to include the fore and aft dimensions of the main and auxiliary fins and be operable Within a suitable aperture in a shell plating.
  • the plate may be provided at the outer end of the fins and function to close the aperture in a shell plating when the fins are
  • the arm or element 35 which able 'fin arrangement is provided the required stabilizing forces may be obtained by a plurality of fin systems of the above described type on each side of the vessel.
  • the out-reach of these fins may be commensurate with the depth of a large bilge keel and they may be fitted on the line of the bilge keel and preferably along the'midship portion thereof, the bilge keel being interrupted over the length occupied by the fin units.
  • a fore and aft gap equal to at least four times the fore and aft dimensions of a fin unit, measured from the leading edge of the main fin to the trailing edge of the auxiliary fin, will be left clear, and a suitable gap will also be left between the end fin units and the adjacent bilge keel.
  • a continuous outer bar may be fitted at the outer edge of the bilge keelenclosing and protecting the area of the fin units. Suitable support for this bar will be arranged over the fin area so as not to interfere with the flow of water to or from the fins. Alternatively, no protecting bar may be fitted but the bilge keel adjacent to the fins fore and aft may be suitabl shaped and hardened so that it will cut any rope or other obstacle which is liable to foul the fins.
  • the means of operation maybe either individual or linked together in groups.
  • Anti-rolling apparatus comprising lateral fins arranged substantially at the turn of the bilge, means mounting the fins for tilting movement about axes disposed athwartship, each of the fins including two parts in direct hinged connection one with the other along a line parallel with the main axis about which the fin may be tilted as a whole, said parts constituting leading and trailing sections and mechanical means for securing relative motion between the two parts of the fin including an element operably connected with said trailing section and responsive to the movement of said leading section for constraining the movement of said trailing section to pivotal movement of the said direction as but in greater amplitude than said leading section, said mechanical means further including at least one movable part connected to said element providing relative motion between the two sections of the fins dependent both in magnitude and direction upon the tilting motion imparted to the fin as a whole, said element being disposed in a plane perpendicular to said axes and constrained for movement in an arcuate path and thereby directly exerting force on said trailing section adjacentits
  • Roll stabilisers for ships comprising fin means extending laterally from opposite sides thereof substantially at the turn of the bilge, means for supporting and tilting the fin means including mechanism operable to apply-respective opposite tilting movement to the fin means at the oppostie sides of the ship about main axes disposed athwartship to produce anti-rolling couples, each fin means including a leading section and a trailing section, each having leading and trailing edges, means pivotally interconnecting said sections along an axis spaced from and parallel with the main axis about which said fin means tilts as a whole, said means including a pivot journalled in the leading section adjacent the trailing edge thereof, said trailing section being rigidly connected to said pivot over a substantial portion of the length of the pivot, and means effecting relative motion between said sections including an element fixed with relation to said main axis about which the fin means tilt and mechanical force applying means operably connected between said pivot and said element and movable in response to the tilting movement of the fin as a whole to exert force on the trailing section to
  • a roll stabiliser as defined in and by claim 2 and a rotatable shaft connected to said leading section for tilting the fin as a Whole, a stationary toothed sector concentric with said shaft,
  • a shaft providing the pivot about which said trailing section moves relative to said leading section, and a toothed sector carried by said last mentioned shaft and engageable with said first mentioned sector to effect pivotal movement of said trailing section relative to said leading section.
  • Anti-rolling apparatus for ships comprising fins on opposite sides of the ship, an axially movable shaft carrying each fin, an oscillatory shaft in splined relation with each axially movable shaft, at least one hydraulic motor for effecting oscillatory movements of said oscillatory shafts, hydraulic motors for effecting axial movements of said first mentioned shafts, said fins each including two sections pivotally interconnected, and means for imparting relative movement between said two sections and constraining the movement of the sections to tilting movement in the same direction, said means further imparting greater angular movement to one of said sections than the movement imparted to the other, and including a pivot shaft about which said sections pivot relatively to one another, a fixed pivot associated with each said axially movable shaft, and mechanical means interconnecting said fixed pivots with said first mentioned pivots and responsive to the oscillatory movement of said oscillatory shafts to impart said relative movement between said sections.
  • Roll stabilising apparatus for ships comprising retractable fins disposed substantially at the turn of the bilge of the ship and on opposite sides thereof, an axially movable shaft carrying each fin, said shaft being movable from an inboard retracted position to an extended position disposing the fins laterally of the ship, each fin comprising a trailing section and a leading section, a pivot shaft pivotally interconnecting said sections, an oscillatory shaft'in splined relation with each said axially movable shaft, the oscillatory shafts for the fins on opposite sides of the ship being disposed in alignment with one another and terminating in spaced relation to each other Within the ship, means for oscillating said shafts in respective opposite directions including a shaft supported parallel to said oscillatory shafts,
  • hydraulic motors for extending and retracting each said axially movable shaft,and mechanical: connections each includ -:1
  • an anti-rolling apparatus for ships of the type having at least one main lateral stabilizing fin including an aft edge, in the vicinity of the turn of the bilge and mechanism for tilting the fin with respect to a neutral position about a normally horizontal axis disposed athwartship, the combination thereof with an auxiliary fin that is relatively small with respect to the main fin, hinge means articulating said auxiliary fin to said main fin for pivoting movement about an axis parallel with said first mentioned axis and disposed in the vicinity of the aft edge of the main fin and mechanical linkage means operatively connected with said auxiliary fin and responsive to tilting movement of said main fin for tilting said auxiliary fin in the same direction as and through a greater amplitude of movement as regards the main fin.
  • an anti-rolling apparatus for ships of the type having at least one main lateral stabilizing fin including an aft edge, in the vicinity of the i hinge means articulating said auxiliary fin to said main fin for pivoting movement about an axis parallel with said first mentioned axis and disposed in the vicinity of the aft edge of the main fin and mechanical linkage means operatively connected with said auxiliary fin including a movable arm movable relative to the main fin responsive to tilting movement of said main fin for tilting said auxiliar fin in the same direction as and through a greater amplitude of movement as regards the main fin.
  • An anti-rolling apparatus forships comprising lateral fins arranged substantially at the turn of the bilge, means mounting the fins for tilting movement about axes disposed athwartship, each of the fins including two parts in direct hinged connection one with the other along an axis parallel with the main axis about which the fin is tilted as a whole, said parts constituting leading and trailing sections, and mechanical means'for effecting relative motion between the two parts including a movable arm operatively connected with said trailing section and responsive tothe' movement of said leading section about said first axis for constraining the movement of said traitingsection to pivotal movement about said second axis in the same direction as but-of greater amplitude than the movement of said leading section.
  • An anti-rolling apparatus for ships comprising lateral fins arranged substantially at the turn of the bilge, means mounting the fins for tilting movement about axes disposed athwartship, each of the fins including two parts in direct hinged connection one with the other along an axis parallel with the main axis about which the fin is tiltedasa whole, said parts constituting leading and trailing sections, and.
  • mechanical means for effecting relative motion between the two parts including an element fixed with relation to said first mentioned axis, an arm operatively connected with said trailing section and means movably connecting the element with the arm so that the arm moves as said leading section tilts, thereby imparting tilting movement to said trailing section about said second axis, said movement being constrained to tilting movement in the same direction as but of greater amplitude than the movement of the leading section.
  • the hinge means connecting the main and auxiliary fins extends along a line disposed between .20 and .30 of the distance between the fore and aft dimensions of both fins whereby the auxiliary fin has fore and aft dimensions of A; to of the dimensions of said main fin.
  • An anti-rolling apparatus as defined in and 'by claim 6, in which the main fin has a leading edge, the said normally horizontal axis about which the main fin tilts being disposed rearwardly of said leading edge at a position between .30 and .35 of the total fore and aft dimensions of the main and auxiliary fins.
  • An anti-rolling apparatus as defined in and by claim 6, wherein a rotatable shaft is connected to said main fin for tilting the. same, a stationary toothed sector concentric with said shaft, said hinge means including a shaft providing a pivot about which said auxiliary fin moves relative to said main fin and a toothed sector carried by said last mentioned shaft and engageable with said first mentioned sector to effect pivotal movement of said auxiliary fin relative to said main fin.
  • An anti-rolling apparatus for ships comprising at least one lateral fin arranged substantiall at the turn of the bilge and on opposite sides of the ship, means mounting the fins for tilting movement about axes disposed athwartship, mechanism for tilting said fins, each of the fins including two parts in direct hinge connection one with the other along an axis parallel with each of the first mentioned axes, said parts constituting leading and trailing sections and mechanical means for effecting relative motion between the two parts of each fin including a fixed pivot disposed parallel with said axes, an arm rigidly connected with said trailing section and a link pivotally connected at its opposite ends with said pivot and said arm respectively, said linlg.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Hinges (AREA)
  • Toys (AREA)
  • Vibration Prevention Devices (AREA)
US652966A 1945-03-20 1946-03-08 Roll-stabilizing oscillating fin installation on ships Expired - Lifetime US2550752A (en)

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GB7013/45A GB588965A (en) 1945-03-20 1945-03-20 Improvements in and relating to roll stabilisers for ships

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BE (1) BE463924A (pt)
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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2813591A (en) * 1954-07-12 1957-11-19 Mckiernan Terry Corp Gear for projecting and retracting underwater sound translating apparatus
US2878772A (en) * 1954-10-06 1959-03-24 Kjekstad Johannes Stabilizers for ships
US2936728A (en) * 1955-12-22 1960-05-17 Muirhead & Co Ltd Ship construction for use with fin stabilizing arrangements
US2969035A (en) * 1959-05-20 1961-01-24 Muirhead & Co Ltd Ship stabilizers
US3018749A (en) * 1957-09-09 1962-01-30 Beurs Johannes De Anti-pitch stabilizers for ships
US3066634A (en) * 1960-05-06 1962-12-04 Suberkrub Franz Anti-roll stabilizers of ships
US3074488A (en) * 1961-05-10 1963-01-22 Luther H Blount Controllable pitch propeller with hinging trailing edge
DE1267127B (de) * 1967-01-24 1968-04-25 Blohm Voss Ag Schlingerdaempfungsanlage fuer Schiffe
DE1270978B (de) * 1967-01-24 1968-06-20 Blohm Voss Ag Schlingerdaempfungsanlage fuer Schiffe
US3643617A (en) * 1969-02-27 1972-02-22 Vosper Ltd Stabilizer systems for water-borne vessels
US3924555A (en) * 1972-08-18 1975-12-09 Flume Stabilization Syst Stabilizing fin system
US4273063A (en) * 1978-06-19 1981-06-16 Societe Nouvelle Des Ateliers Et Chantiers Du Havre Ship stabilizer
FR2680838A1 (fr) * 1991-09-04 1993-03-05 Blohm Voss Ag Corps presentant un profil hydrodynamique, notamment aileron stabilisateur pour navires.
US5467728A (en) * 1994-06-22 1995-11-21 The United States Of America As Represented By The Secretary Of The Navy Retractable bow diving plane for a submarine
EP2081817A1 (en) * 2006-11-17 2009-07-29 Austal Ships Pty.Ltd. A roll stabiliser
WO2016069859A1 (en) * 2014-10-29 2016-05-06 Naiad Maritime Group, Inc. Electric fin stabilizer

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1104374B (de) * 1957-05-14 1961-04-06 Saro Anglesey Ltd Fryars Works Ein- und ausfahrbare Schiffs-stabilisierungsflosse
DE1155994B (de) * 1960-12-31 1963-10-17 Siemens Ag Einrichtung zur Stabilisierung von Schiffen unter Einsatz gesteuerter, einziehbarer Flossen
EP0101262A3 (en) * 1982-08-12 1985-04-03 MacTaggart Scott (Holdings) Ltd. Improvements in or relating to apparatus for controlling hydroplanes of marine vessels
GB201710201D0 (en) * 2017-06-16 2017-08-09 Wavefoil As Retractable foil mechanism

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US22002A (en) * 1858-11-02 Erkes
DE497046C (de) * 1930-05-01 Ingenieurskantoor Voor Scheeps Balanceruder
US1800365A (en) * 1927-04-13 1931-04-14 Sperry Gyroscope Co Ltd Means for preventing pitching of ships
GB373656A (en) * 1930-02-22 1932-05-23 Leo Costanievich Improvements in and relating to rudders
US2040984A (en) * 1935-05-14 1936-05-19 Francesco Joe Coluccio Fu Speed wave ship
US2099380A (en) * 1936-05-21 1937-11-16 Brown Brothers & Company Ltd Antirolling apparatus for ships
US2198295A (en) * 1936-11-11 1940-04-23 Wilton S Machf En Scheepswerf Antirolling device for ships
US2223562A (en) * 1939-02-11 1940-12-03 James V Giliberty Antirolling device for ships
US2369832A (en) * 1942-12-14 1945-02-20 Cons Vultee Aircraft Corp Airplane aileron system
US2435922A (en) * 1944-03-22 1948-02-10 Curtiss Wright Corp Tab control mechanism

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US22002A (en) * 1858-11-02 Erkes
DE497046C (de) * 1930-05-01 Ingenieurskantoor Voor Scheeps Balanceruder
US1800365A (en) * 1927-04-13 1931-04-14 Sperry Gyroscope Co Ltd Means for preventing pitching of ships
GB373656A (en) * 1930-02-22 1932-05-23 Leo Costanievich Improvements in and relating to rudders
US2040984A (en) * 1935-05-14 1936-05-19 Francesco Joe Coluccio Fu Speed wave ship
US2099380A (en) * 1936-05-21 1937-11-16 Brown Brothers & Company Ltd Antirolling apparatus for ships
US2198295A (en) * 1936-11-11 1940-04-23 Wilton S Machf En Scheepswerf Antirolling device for ships
US2223562A (en) * 1939-02-11 1940-12-03 James V Giliberty Antirolling device for ships
US2369832A (en) * 1942-12-14 1945-02-20 Cons Vultee Aircraft Corp Airplane aileron system
US2435922A (en) * 1944-03-22 1948-02-10 Curtiss Wright Corp Tab control mechanism

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2813591A (en) * 1954-07-12 1957-11-19 Mckiernan Terry Corp Gear for projecting and retracting underwater sound translating apparatus
US2878772A (en) * 1954-10-06 1959-03-24 Kjekstad Johannes Stabilizers for ships
US2936728A (en) * 1955-12-22 1960-05-17 Muirhead & Co Ltd Ship construction for use with fin stabilizing arrangements
US3018749A (en) * 1957-09-09 1962-01-30 Beurs Johannes De Anti-pitch stabilizers for ships
US2969035A (en) * 1959-05-20 1961-01-24 Muirhead & Co Ltd Ship stabilizers
US3066634A (en) * 1960-05-06 1962-12-04 Suberkrub Franz Anti-roll stabilizers of ships
US3074488A (en) * 1961-05-10 1963-01-22 Luther H Blount Controllable pitch propeller with hinging trailing edge
DE1267127B (de) * 1967-01-24 1968-04-25 Blohm Voss Ag Schlingerdaempfungsanlage fuer Schiffe
DE1270978B (de) * 1967-01-24 1968-06-20 Blohm Voss Ag Schlingerdaempfungsanlage fuer Schiffe
US3643617A (en) * 1969-02-27 1972-02-22 Vosper Ltd Stabilizer systems for water-borne vessels
US3924555A (en) * 1972-08-18 1975-12-09 Flume Stabilization Syst Stabilizing fin system
US4273063A (en) * 1978-06-19 1981-06-16 Societe Nouvelle Des Ateliers Et Chantiers Du Havre Ship stabilizer
FR2680838A1 (fr) * 1991-09-04 1993-03-05 Blohm Voss Ag Corps presentant un profil hydrodynamique, notamment aileron stabilisateur pour navires.
GR920100370A (el) * 1991-09-04 1993-06-21 Blohm Voss Ag Σώματα εφοδιασμένα με ένα προφίλ σχήματος δυναμικών γραμμών ρεύματος ιδιαιτέρως δια πτερύγια στα?εροποιήσεως πλοίων.
US5365870A (en) * 1991-09-04 1994-11-22 Blohm & Voss Ag Body equipped with a streamlined profile, in particular a stabilizer fin for ships with a turbulence reducing structure and method of using the turbulence reducing structure
ES2064219A2 (es) * 1991-09-04 1995-01-16 Blohm Voss Ag Cuerpo en embarcaciones, provisto de un perfil flujo-dinamico, simetrico respecto a su plano central longitudinal.
US5467728A (en) * 1994-06-22 1995-11-21 The United States Of America As Represented By The Secretary Of The Navy Retractable bow diving plane for a submarine
EP2081817A1 (en) * 2006-11-17 2009-07-29 Austal Ships Pty.Ltd. A roll stabiliser
EP2081817A4 (en) * 2006-11-17 2012-11-14 Austal Ships Pty Ltd roll stabilizer
WO2016069859A1 (en) * 2014-10-29 2016-05-06 Naiad Maritime Group, Inc. Electric fin stabilizer
US9944363B2 (en) 2014-10-29 2018-04-17 Naiad Maritime Group, Inc. Electric fin stabilizer
US10246170B2 (en) 2014-10-29 2019-04-02 Naiad Maritime Group, Inc. Electric fin stabilizer

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Publication number Publication date
GB588965A (en) 1947-06-06
BE463924A (pt) 1946-04-30
FR924236A (fr) 1947-07-30

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