US3915108A - Apparatus for controlling heave pitch and roll of a floating vessel - Google Patents

Apparatus for controlling heave pitch and roll of a floating vessel Download PDF

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Publication number
US3915108A
US3915108A US400269A US40026973A US3915108A US 3915108 A US3915108 A US 3915108A US 400269 A US400269 A US 400269A US 40026973 A US40026973 A US 40026973A US 3915108 A US3915108 A US 3915108A
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US
United States
Prior art keywords
openings
vessel
plates
tanks
series
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.)
Expired - Lifetime
Application number
US400269A
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English (en)
Inventor
Joaquin R Rodriguez
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.)
Global Marine Inc
Original Assignee
Global Marine Inc
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 Global Marine Inc filed Critical Global Marine Inc
Priority to US400269A priority Critical patent/US3915108A/en
Priority to CA207,679A priority patent/CA1011180A/en
Priority to JP49102117A priority patent/JPS5059988A/ja
Priority to DK484474A priority patent/DK484474A/da
Priority to FI2733/74A priority patent/FI273374A/fi
Priority to ES430302A priority patent/ES430302A1/es
Priority to NO743412A priority patent/NO743412L/no
Application granted granted Critical
Publication of US3915108A publication Critical patent/US3915108A/en
Assigned to CHEMICAL BANK, A NY CORP. reassignment CHEMICAL BANK, A NY CORP. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GLOBAL MARINE INC.
Anticipated expiration legal-status Critical
Expired - Lifetime 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 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B35/4413—Floating drilling platforms, e.g. carrying water-oil separating devices
    • 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
    • B63B1/107—Semi-submersibles; Small waterline area multiple hull vessels and the like, e.g. SWATH
    • 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
    • B63B39/02—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by displacement of masses
    • B63B39/03—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by displacement of masses by transferring liquids
    • 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
    • B63B1/121—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly comprising two hulls
    • B63B2001/123—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly comprising two hulls interconnected by a plurality of beams, or the like members only

Definitions

  • ABSTRACT A floating vessel having tanks adjacent both sides and both fore and aft of the vessel, the tanks extending vertically above and below the waterline. Each tank has a series of vertically spaced openings to the outboard side of the vessel, the openings being both above and below the waterline.
  • This invention relates to floating vessels such as ships, barges, floating platforms and the like, and more particular, is concerned with apparatus for adjustably damping the heave roll and pitch of such floating vessels.
  • the present invention involves a tuning system for damping the heave, pitch, and rolling motions of a vessel floating in water which involves a plurality of vertically extending tanks positioned along either side of the vessel and extending substantially below and above the waterline. Each tank is provided with a series of openings to the sea, the openings being spaced vertically along the length of each tank. The size of the openings can be adjusted or the openings can be completely closed to the sea.
  • FIG. 1 is a side elevational view of a vessel incorporting the features of the present invention
  • FIG. 2 is a front view of the vessel
  • FIG. 3 is a detailed view of the mechanism for open- FIG. 4 is a sectional view taken substantially on the line 4-4 of FIG. 3.
  • FIGS. 1 and 2 there is shown a vessel designed for use as a drilling platform and described in detail in copending application Ser. No. 399,806, filed Sept. 24, 1973, by the same inventor as the present application. While the invention is described with particular reference to the vessel disclosed in the aboveidentified copending application, the invention is not limited to use in any particular type of vessel and has application to conventional ship-shape vessels as well.
  • the vessel 10 includes a pair of vertical hulls, indicated generally at 1'2 and 14, joined at the top by a bridging platform indicated generally at 16.
  • the platform includes a main deck 18 and a lower deck 20 which are rigidly tied together by box girder by means of suitable tubular reinforcing members, including a plurality of horizontal cross members 22 extending between the hulls 12 and 14 above the waterline.
  • the horizontal cross members 22 in turn aretied to the underside of the platform 16 by upright tubular sections 24 and diagonal cross braces 26.
  • the vertical hulls l2 and 14 terminate at their lower ends in torpedo-shaped sections 28 and 30, respectively.
  • Each of the torpedo-shapedsections includes a cylindrical portion extending the length of the hull which is of somewhat larger diameter than the beam width of the remainder of the hull.
  • the torpedo-shaped sections have a hemispherical bow 32 at one end and a tapered stern section 34 at the other end.
  • a propeller 36 extends beyond the end of the stern section and is surrounded by a protective shroud 38.
  • the propellers are driven by suitable motors (not shown) mounted in the interior of the stern section.
  • the torpedo-shaped sections at the lower ends of the hulls are rigidly joined together by horizontal cross members 40, which, as shown in FIG. 2, are preferably oval shaped in crosssection to reduce resistance to movement through the water.
  • each hull is constructed of bulkheads and outer plates welded together to form a rigid watertight structure.
  • Each hull comprises a pair of substantially parallel side walls and 52 which extend vertically from beneath the lower deck 20 down to the junction with the outer skin of the cylindrical lower section 28.
  • the bow 53 and stem 55 of the hulls are semi-cylindrical in form, for example, to reduce drag in moving through the water.
  • each hull is compartmentalized by a series of vertical bulkheads 57.
  • the vertical bulkheads are used in combination with the side walls 50 and 52 of each hull to form vertically extending tanks 58, 60, 62 and 64.
  • the tanks are arranged in pairs with two of the tanks in the forward part of the hull and two of the tanks in the aft portion of the hull.
  • the tanks are sealed off at either end by bottom walls 66 and top walls 68.
  • the top and bottom walls are positioned such that the tanks extend vertically substantially above and below the waterline.
  • Each of the vertical tanks is provided with a series of vertically spaced openings 70 [located on the outboard side of the respective hulls l2 and 14. As best seen in FIGS. 3 and 4, the size of the openings may be varied by rotatably supported plates or louvers 72 positioned inside the tanks opposite each of the openings 70. Each plate 72 is supported on a shaft 74 extending horizontally across the center of each of the openings 70, the
  • shaft 74 being supported at either end from the inside construction.
  • the vertical hulls l2 and 14 are secured of the side plates forming the outer side wall of the hull by suitable angle brackets 76 and 78.
  • .lournaled on the shaft 74 are a pair of supporting arms 80 and 82 which I are secured at one end to the plate 72 and are connected at the other end by a shaft 84.
  • a vertically extending connecting rod 86 journaled on each of the shafts 84, extends upwardly through an opening 88 in the top wall 68 of the tank.
  • An hydraulic actuating cylinder 90 is pivotally supported at one end in a clevis 92 mounted on the top wall 68.
  • the piston rod 93 of the cylinder 90 in turn is pivotally coupled to the top of the connecting rod 86, as indicated at 92.
  • the top of the connecting rod 86 is also movably supported from the side wall 52 by a link 94.
  • the movable plates 72 are shown in the closed position in which the openings 70 are substantially closed off. Energizing of the hydraulic cylinder 90 lifts the connecting rod 86, thereby rotating the arms 80 and 82 so as to move the plates 72 into an open position, as indicated by the dotted lines in FIG. 3.
  • the tanks 58, 60, 62, and 64 and the fore and aft portions of each of the hulls operate to reduce the vertical movement of the vessel.
  • This vertical movement or heave reponse is due to the cyclical change of buoyancy in the vessel resulting from the rise and fall of the water by passing wave action.
  • For a conventional vessel there is no control over such changes in buoyancy as the boat rides and falls.
  • the tanks of the present invention open to the sea, water flows into and out of the tanks as the water level rises and falls, so that the total weight of the vessel also varies in a cyclical manner.
  • all of the openings through the sides 50 are shown as being equal in area.
  • the openings need not be of equal size.
  • the top openings generally function only to allow air to enter and escape from the volume above the surface of the water and may therefore be made smaller in area without materially changing the operation.
  • the size of the openings below the waterline may be adjusted in size independently of the openings above the waterline.
  • a vessel comprising a hull including a plurality of vertically extending tanks, each tank having a series of openings through side walls thereof on the outboard sides of the hull, the series of openings in each tank being arranged vertically with a plurality of openings in each series being below the waterline and a plurality above the waterline, whereby the openings in each series are covered sequentially by a rise in the level of the water along the sides of the vessel, and means for adjusting the sizes of said openings to control the rate at which water passes between the tanks and the outside of the vessel comprising plates mounted in the openings and rotatable about horizontal axes, the plates when in an open position extending outwardly of the sides of the vessel.
  • said adjusting means further includes hinge means inside the tank mounting the respective plates to the tank, the hinge meanssupporting the plate for rotation about a horizontal axis positioned substantially opposite the central part of the plate and inside the side wall, the plate being narrower than the adjacent opening, and means rotating the plates from a position parallel to the side wall to a position extending a substantial angle to the side wall, said means locking the plates in any selected angular position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
US400269A 1973-09-24 1973-09-24 Apparatus for controlling heave pitch and roll of a floating vessel Expired - Lifetime US3915108A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US400269A US3915108A (en) 1973-09-24 1973-09-24 Apparatus for controlling heave pitch and roll of a floating vessel
CA207,679A CA1011180A (en) 1973-09-24 1974-08-23 Apparatus for controlling heave pitch and roll of a floating vessel
JP49102117A JPS5059988A (fi) 1973-09-24 1974-09-06
DK484474A DK484474A (fi) 1973-09-24 1974-09-16
FI2733/74A FI273374A (fi) 1973-09-24 1974-09-19
ES430302A ES430302A1 (es) 1973-09-24 1974-09-23 Un aparato para amortiguar el movimiento de subida y bajadade una embarcacion que tiene uno o mas cascos flotantes.
NO743412A NO743412L (fi) 1973-09-24 1974-09-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US400269A US3915108A (en) 1973-09-24 1973-09-24 Apparatus for controlling heave pitch and roll of a floating vessel

Publications (1)

Publication Number Publication Date
US3915108A true US3915108A (en) 1975-10-28

Family

ID=23582916

Family Applications (1)

Application Number Title Priority Date Filing Date
US400269A Expired - Lifetime US3915108A (en) 1973-09-24 1973-09-24 Apparatus for controlling heave pitch and roll of a floating vessel

Country Status (7)

Country Link
US (1) US3915108A (fi)
JP (1) JPS5059988A (fi)
CA (1) CA1011180A (fi)
DK (1) DK484474A (fi)
ES (1) ES430302A1 (fi)
FI (1) FI273374A (fi)
NO (1) NO743412L (fi)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4281615A (en) * 1977-10-31 1981-08-04 Sedco, Inc. Self-propelled semi-submersible service vessel
US4471708A (en) * 1977-10-31 1984-09-18 Sedco, Inc. Self-propelled semi-submersible service vessel
US4495880A (en) * 1982-05-19 1985-01-29 Maniscalco Philip M Draft assisted delivery system
FR2670459A1 (fr) * 1990-12-13 1992-06-19 Inst Francais Du Petrole Plate-forme semi-submersible a pontons poreux.
FR2753682A1 (fr) * 1996-09-24 1998-03-27 Elf Aquitaine Ensemble de flottaison a pilonnement controle
WO1999057011A1 (en) * 1998-05-01 1999-11-11 Friede & Goldman, Ltd. Dynamically positioned semi-submersible drilling vessel
US20050005834A1 (en) * 2003-07-10 2005-01-13 Doria Engineering Floating terminal for loading/offloading ships such as methane tankers
US20110174206A1 (en) * 2010-01-19 2011-07-21 Kupersmith John A Wave attenuating large ocean platform
US20130098281A1 (en) * 2010-10-29 2013-04-25 Yoshito Ando Rolling reduction apparatus of floating structure
WO2016127477A1 (zh) * 2015-02-09 2016-08-18 清华大学深圳研究生院 一种浮式自升式钻井平台
US9457875B2 (en) 2015-02-09 2016-10-04 Graduate School At Shenzhen, Tsinghua University Floating type self-lifting drilling platform

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5838356B2 (ja) * 1979-02-20 1983-08-22 三井造船株式会社 半没水船の動揺抑止装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1427526A (en) * 1920-06-23 1922-08-29 Frahm Hermann Gustav Carl Marine vessel
US2405115A (en) * 1942-09-25 1946-08-06 Floating Stations Ltd Floating structure
US3164120A (en) * 1963-06-13 1965-01-05 Mcmullen Ass John J Flume stabilization system for tankers and the like
US3279407A (en) * 1963-05-28 1966-10-18 Stenger Jacob Johannes Surface vessel
US3299846A (en) * 1965-01-18 1967-01-24 Canadian Patents Dev Stable floating support columns
US3366087A (en) * 1964-11-09 1968-01-30 Exxon Research Engineering Co Anti-pitch systems
US3797440A (en) * 1971-11-26 1974-03-19 Flume Stabilization Syst Open hull stabilizer

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1427526A (en) * 1920-06-23 1922-08-29 Frahm Hermann Gustav Carl Marine vessel
US2405115A (en) * 1942-09-25 1946-08-06 Floating Stations Ltd Floating structure
US3279407A (en) * 1963-05-28 1966-10-18 Stenger Jacob Johannes Surface vessel
US3164120A (en) * 1963-06-13 1965-01-05 Mcmullen Ass John J Flume stabilization system for tankers and the like
US3366087A (en) * 1964-11-09 1968-01-30 Exxon Research Engineering Co Anti-pitch systems
US3299846A (en) * 1965-01-18 1967-01-24 Canadian Patents Dev Stable floating support columns
US3797440A (en) * 1971-11-26 1974-03-19 Flume Stabilization Syst Open hull stabilizer

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4281615A (en) * 1977-10-31 1981-08-04 Sedco, Inc. Self-propelled semi-submersible service vessel
US4471708A (en) * 1977-10-31 1984-09-18 Sedco, Inc. Self-propelled semi-submersible service vessel
US4495880A (en) * 1982-05-19 1985-01-29 Maniscalco Philip M Draft assisted delivery system
GB2257664B (en) * 1990-12-13 1994-09-28 Inst Francais Du Petrole Semi-submersible platforms with porous pontoons
WO1992010398A1 (fr) * 1990-12-13 1992-06-25 Institut Français Du Petrole Plate-forme semi-submersible a pontons poreux
GB2257664A (en) * 1990-12-13 1993-01-20 Inst Francais Du Petrole Semi-submersible platform with porous pontoons
FR2670459A1 (fr) * 1990-12-13 1992-06-19 Inst Francais Du Petrole Plate-forme semi-submersible a pontons poreux.
FR2753682A1 (fr) * 1996-09-24 1998-03-27 Elf Aquitaine Ensemble de flottaison a pilonnement controle
US6021728A (en) * 1996-09-24 2000-02-08 Elf Exploration Production Buoyancy unit with controlled heave
WO1999057011A1 (en) * 1998-05-01 1999-11-11 Friede & Goldman, Ltd. Dynamically positioned semi-submersible drilling vessel
US20050005834A1 (en) * 2003-07-10 2005-01-13 Doria Engineering Floating terminal for loading/offloading ships such as methane tankers
US20110174206A1 (en) * 2010-01-19 2011-07-21 Kupersmith John A Wave attenuating large ocean platform
US20130098281A1 (en) * 2010-10-29 2013-04-25 Yoshito Ando Rolling reduction apparatus of floating structure
WO2016127477A1 (zh) * 2015-02-09 2016-08-18 清华大学深圳研究生院 一种浮式自升式钻井平台
US9457875B2 (en) 2015-02-09 2016-10-04 Graduate School At Shenzhen, Tsinghua University Floating type self-lifting drilling platform

Also Published As

Publication number Publication date
JPS5059988A (fi) 1975-05-23
NO743412L (fi) 1975-04-21
FI273374A (fi) 1975-03-25
DK484474A (fi) 1975-05-20
ES430302A1 (es) 1976-10-01
CA1011180A (en) 1977-05-31

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Legal Events

Date Code Title Description
AS Assignment

Owner name: CHEMICAL BANK, A NY CORP.

Free format text: SECURITY INTEREST;ASSIGNOR:GLOBAL MARINE INC.;REEL/FRAME:005294/0214

Effective date: 19891027