US20070039537A1 - Method and Apparatus for Ballast-Assisted Reconfiguration of a Variable-Draft Vessel - Google Patents

Method and Apparatus for Ballast-Assisted Reconfiguration of a Variable-Draft Vessel Download PDF

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Publication number
US20070039537A1
US20070039537A1 US11/278,027 US27802706A US2007039537A1 US 20070039537 A1 US20070039537 A1 US 20070039537A1 US 27802706 A US27802706 A US 27802706A US 2007039537 A1 US2007039537 A1 US 2007039537A1
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US
United States
Prior art keywords
hull
draft
vessel
center
center 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.)
Abandoned
Application number
US11/278,027
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English (en)
Inventor
Lewis Madden
Stephen Bailey
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.)
Lockheed Martin Corp
Original Assignee
Lockheed Martin Corp
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 Lockheed Martin Corp filed Critical Lockheed Martin Corp
Priority to US11/278,027 priority Critical patent/US20070039537A1/en
Assigned to LOCKHEED MARTIN CORPORATION reassignment LOCKHEED MARTIN CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MADDEN, LEWIS D., BAILEY, STEPHEN L.
Priority to EP06851126A priority patent/EP1919766B1/en
Priority to BRPI0614947-2A priority patent/BRPI0614947A2/pt
Priority to CA002617444A priority patent/CA2617444A1/en
Priority to MX2008002328A priority patent/MX2008002328A/es
Priority to PCT/US2006/032684 priority patent/WO2007126413A2/en
Publication of US20070039537A1 publication Critical patent/US20070039537A1/en
Priority to NO20081373A priority patent/NO20081373L/no
Abandoned legal-status Critical Current

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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 
    • 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 
    • 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
    • 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
    • B63B1/125—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly comprising more than two hulls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B15/00—Superstructures, deckhouses, wheelhouses or the like; Arrangements or adaptations of masts or spars, e.g. bowsprits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B43/00—Improving safety of vessels, e.g. damage control, not otherwise provided for
    • B63B43/02—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking
    • B63B43/04—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability
    • B63B43/06—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability using ballast tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B43/00—Improving safety of vessels, e.g. damage control, not otherwise provided for
    • B63B43/02—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking
    • B63B43/04—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability
    • B63B43/08—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability by transfer of solid ballast
    • 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
    • B63B1/14—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected resiliently or having means for actively varying hull shape or configuration
    • B63B2001/145—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected resiliently or having means for actively varying hull shape or configuration having means for actively varying hull shape or configuration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B3/00—Hulls characterised by their structure or component parts
    • B63B3/14—Hull parts
    • B63B3/48—Decks
    • B63B2003/485—Decks movably connected to hull or superstructure

Definitions

  • the present invention relates to sea-faring vessels. More particularly, the present invention relates to a vessel having a multiple, reconfigurable hulls and a variable draft.
  • Vessel hulls have traditionally been optimized for use in either shallow water or in deep water. For example, to navigate shallow waters, a relatively flat hull is used to maximize displacement and minimize draft. On the other hand, vessels that operate in deep waters frequently have v-shaped hulls that provide deep draft for good seakeeping.
  • variable-draft vessels which are designed to operate well in both shallow and deep waters.
  • variable-draft vessel is capable of varying its draft to accommodate changes in water depth or mission requirements.
  • a variable-draft vessel that is disclosed in U.S. Pat. No. 6,877,450 B2 is capable of reconfiguring its hull form to change draft.
  • the vessel includes a flat, center hull that is coupled to two side or outer hulls.
  • the center hull is vertically movable relative to the side hulls to vary draft.
  • the center hull can be moved above or below the waterline.
  • all buoyancy is provided by the side hulls, and the vessel takes maximum draft.
  • the center hull dips below the waterline, it contributes to the buoyancy provided by the side hulls. As a consequence, vessel draft is reduced.
  • lifting mechanisms can be used. Regardless of the specifics of the lifting mechanism, if all vertical translation of the center hull is performed using the lifting mechanism, the vessel will incur penalties of added weight, cost, and space allocation.
  • the present invention provides a way to reconfigure the hull form of a reconfigurable variable-draft vessel with reduced or no reliance on a lifting mechanism.
  • ballasting and de-ballasting operations assist in the vertical translation of the center hull. Accomplishing at least some of the required vertical translation in this manner reduces the range-of-motion requirements on the lifting mechanism.
  • variable-draft vessel incorporates special, over-sized tanks for ballasting operations and possesses an ability to lock its hulls in position relative to one another.
  • a method in accordance with the present invention for reconfiguring a reconfigurable, variable-draft vessel having a side hull and a center hull comprises:
  • FIG. 1 depicts a reconfigurable, variable-draft vessel in accordance with the illustrative embodiment of the present invention.
  • FIG. 2 depicts the vessel of FIG. 1 in a deep-draft mode configuration.
  • FIG. 3 depicts the vessel of FIG. 1 in a shallow-draft mode configuration.
  • FIG. 4 depicts a flow diagram of a method in accordance with the illustrative embodiment of the present invention.
  • FIGS. 5A-5C depict the reconfiguration of a variable-draft vessel from a shallow-draft mode configuration to a deep-draft mode configuration.
  • FIGS. 6A-6C depict the reconfiguration of a variable-draft vessel from a deep-draft mode configuration to a shallow-draft mode configuration.
  • FIG. 1 depicts re-configurable, variable-draft vessel 100 in accordance with the illustrative embodiment of the present invention.
  • Vessel 100 includes side hulls 102 , struts 104 , sponson 106 , and deck house 108 .
  • the deck house which is also referred to as the center hull, incorporates a pilot house, and, internally, a (lower) deck for vehicles and an (upper) deck for passengers.
  • Vessel 100 has a lifting mechanism for moving the center hull 108 relative to side hulls 102 .
  • four lifting mechanisms 110 are used, wherein two mechanisms are disposed on each side of center hull 102 , one located aft and one located toward the stern.
  • center hull 108 can be placed in a state in which it is locked to side hulls 102 such that the center hull and side hulls move in unison. Also, center hull 108 can be decoupled from side hulls 102 via lifting mechanism 110 so that the center hull and side hulls can move independently of one another.
  • lifting mechanism 110 comprises an arrangement of hydraulic cylinders, guides, and bearings, such as is described in co-pending application (Atty. Dkt. No. 711-090us), filed on even date herewith and incorporated by reference herein. Those skilled in the art, after reading the present disclosure, will be able to design and build lifting mechanisms suitable for use in conjunction with the present invention. The specific configuration of lifting mechanism 110 is not germane to an understanding of the present invention and, therefore, will not be described further.
  • FIG. 2 depicts vessel 100 in a typical deep-draft mode, wherein bottom 212 of center hull 108 is disposed well above side hulls 102 and above the waterline WL. Since center hull 108 does not typically contact the water when vessel 100 is configured in a deep-draft mode, vessel 100 can travel at higher speeds or with improved sea keeping relative to a shallow-draft mode.
  • deep-draft modes i.e., catamaran and SWATH
  • shallow-draft modes i.e., barge and wet-deck.
  • FIG. 2 depicts vessel 100 in a typical deep-draft mode, wherein bottom 212 of center hull 108 is disposed well above side hulls 102 and above the waterline WL. Since center hull 108 does not typically contact the water when vessel 100 is configured in a deep-draft mode, vessel 100 can travel at higher speeds or with improved sea keeping relative to a shallow-draft mode.
  • FIG. 3 depicts vessel 100 in a typical shallow-draft mode, wherein the bottom of side hulls 102 and bottom 212 of center hull 108 are substantially co-planar.
  • a portion of side hulls 102 and center hull 108 are submerged.
  • vessel 100 can approach a shoreline to launch or recover vehicles and personnel (e.g., via ramp 314 , etc.).
  • Vessel 100 maintains constant displacement while changing draft via vertical translation of upper hull 108 .
  • center hull 108 is translated downward until it contacts the water. Once in contact with the water, center hull 108 displaces some of the weight that was being displaced by side hulls 102 . Consequently, draft is reduced.
  • the activity of lifting mechanisms 110 is supplemented or replaced using a sequence of ballasting and de-ballasting operations of side hulls 102 and, in some embodiments, of center hull 108 as well.
  • the specifics of ballasting and de-ballasting are not described herein since they are well known to those skilled in the art.
  • FIG. 4 depicts, via flow chart, method 400 for reconfiguring variable-draft vessel 100 using ballasting and de-ballasting operations.
  • FIGS. 5A through 5C depict a simplified representation of the relevant portions of vessel 100 during reconfiguration from a shallow-draft mode configuration to a deep-draft mode configuration.
  • FIG. 5A depicts vessel 100 in the shallow-draft mode (see also, FIG. 3 ), wherein the bottom of side hulls 102 are substantially co-planar with bottom 212 of center hull 108 .
  • query 402 of method 400 is answered in the negative and processing transfers to query 404 .
  • processing transfers to operation 408 .
  • processing transfers to operation 406 , wherein that state is switched (i.e., side hulls 102 and center hull 108 are decoupled).
  • the decoupling (or coupling) operation is performed in conjunction with lifting mechanisms 110 . After switching state at operation 406 , processing proceeds to operation 408 .
  • ballast is added to side hulls 102 . That is, water is added to oversized ballast tanks (not depicted) that are situated within side hulls 102 .
  • the increase in weight of side hulls 102 causes them to sink deeper into the water, as depicted in FIG. 5B .
  • This sinking of side hulls 102 results in a change in their vertical position relative to center hull 108 since the side hulls 102 and center hull 108 are decoupled.
  • the state of “coupling” of side hulls 102 and center hull 108 is switched via lifting mechanism 110 .
  • the state changes from “decoupled” to “coupled.”
  • ballast is released from the ballast tanks at operation 412 .
  • FIGS. 6A through 6C depict a simplified representation of the relevant portions of vessel 100 during reconfiguration from a deep-draft mode configuration to a shallow-draft mode configuration.
  • FIG. 6A depicts vessel 100 in a typical deep-draft mode (see also, FIG. 2 ), wherein bottom 212 of center hull 108 is disposed well above side hulls 102 and above waterline WL.
  • vessel 100 is being reconfigured from a deep-draft mode configuration to a shallow-draft mode configuration
  • query 402 is answered in the affirmative and processing transfers directly to operation 408 .
  • vessel 100 is in a deep-draft mode configuration such that center hull 108 is above waterline WL, the side hulls 102 and center hull 108 will necessarily be in a coupled and locked state.
  • ballast is added to side hulls 102 .
  • the increase in weight of side hulls 102 causes them to sink deeper into the water. This is depicted in FIG. 6B . Since side hulls 102 are coupled to center hull 108 , center hull 108 drops toward waterline WL as well. In other words, unlike the previous example, there is no change in the relative vertical positions of center hull 108 and side hulls 102 . Water is added to the ballast tanks of side hulls 102 until center hull 108 enters the water.
  • the state of “coupling” of side hulls 102 and center hull 108 is switched via lifting mechanism 110 .
  • the state changes from “coupled” to “decoupled.”
  • side hulls 102 are fully de-ballasted at operation 412 .
  • This causes side hulls 102 to float at their shallowest draft. Since side hulls 102 and center hull 108 are decoupled, center hull 108 does not rise in response.
  • vessel 100 is substantially in a shallow-draft mode configuration, as depicted in FIG. 6C .
  • optional operations 414 and 418 are conducted. These operations enable center hull 108 to be additionally lowered relative to side hulls 102 .
  • ballast is added to a ballast tank (not depicted) within center hull 108 .
  • This causes the center hull to lower its position in the water relative to side hulls 102 , since the hulls are decoupled.
  • the state of “coupling” of side hulls 102 and center hull 108 is changed again (from decoupled to coupled).
  • the ballast tanks in center hull 108 are de-ballasted, causing vessel 100 to rise.
  • center hull 108 can be repositioned relative to side hulls 102 to reconfigure vessel 100 without using lifting mechanisms 110 .

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Adjustment And Processing Of Grains (AREA)
US11/278,027 2005-08-22 2006-03-30 Method and Apparatus for Ballast-Assisted Reconfiguration of a Variable-Draft Vessel Abandoned US20070039537A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US11/278,027 US20070039537A1 (en) 2005-08-22 2006-03-30 Method and Apparatus for Ballast-Assisted Reconfiguration of a Variable-Draft Vessel
EP06851126A EP1919766B1 (en) 2005-08-22 2006-08-21 Method and apparatus for ballast-assisted reconfiguration of a variable-draft multihull vessel
BRPI0614947-2A BRPI0614947A2 (pt) 2005-08-22 2006-08-21 método e aparelho para a reconfiguração de embarcação de calado variável através de lastreamento
CA002617444A CA2617444A1 (en) 2005-08-22 2006-08-21 Method and apparatus for ballast-assisted reconfiguration of a variable-draft vessel
MX2008002328A MX2008002328A (es) 2005-08-22 2006-08-21 Metodo y aparato para reconfiguracion asistida por lastre de una embarcacion de calado variable.
PCT/US2006/032684 WO2007126413A2 (en) 2005-08-22 2006-08-21 Method and apparatus for ballast-assisted reconfiguration of a variable-draft multihull vessel
NO20081373A NO20081373L (no) 2005-08-22 2008-03-14 Fremgangsmate og apparat for ballastassistert omstrukturering av et fartoy med variabel dypgaende

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Application Number Priority Date Filing Date Title
US71004905P 2005-08-22 2005-08-22
US11/278,027 US20070039537A1 (en) 2005-08-22 2006-03-30 Method and Apparatus for Ballast-Assisted Reconfiguration of a Variable-Draft Vessel

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US (1) US20070039537A1 (pt)
EP (1) EP1919766B1 (pt)
BR (1) BRPI0614947A2 (pt)
CA (1) CA2617444A1 (pt)
MX (1) MX2008002328A (pt)
NO (1) NO20081373L (pt)
WO (1) WO2007126413A2 (pt)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2934842A1 (fr) * 2008-08-07 2010-02-12 Jean Michel Pons Navire comportant des flotteurs immerges permettant de maintenir la coque au dessus du niveau de la mer
WO2011070198A1 (es) * 2009-12-11 2011-06-16 Grupo De Ingenieria Oceanica, S.L. Buque de cascos sumergibles
EP2380807A1 (en) * 2010-04-23 2011-10-26 BMT Nigel Gee Limited A landing craft
WO2012136980A1 (en) * 2011-04-08 2012-10-11 Ocean Surveys, Sciences And Engineering Associates Limited Buoyancy device
WO2013186760A1 (en) * 2012-06-14 2013-12-19 Martin Kuster Semi submarine
FR2997919A1 (fr) * 2012-11-15 2014-05-16 Marie Francois Herve Berguerand Dispositif de navigation rapide a flottaison variable par flotteurs immerges et bras extensibles
US20160311501A1 (en) * 2013-07-11 2016-10-27 Ren Wang One dual purpose boat
FR3039127A1 (fr) * 2015-07-21 2017-01-27 Acri-In Sas Dispositif de relevage et de maintien de l'horizontalite de l'assiette des navires multicoques a flot et a l'amarrage
WO2017167927A1 (en) * 2016-03-31 2017-10-05 Edward Johnston Marine vessel
CN107580579A (zh) * 2015-03-04 2018-01-12 Csl企业股份有限公司 用于船只控制的系统

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102372075B (zh) * 2011-08-19 2013-12-25 上海船舶研究设计院 一种无压载水的船舶结构及其操作方法
EE01389U1 (et) 2016-04-29 2017-02-15 Buinco Innovation Oü Moodulliigend katamaraan-tüüpi laeva platvormi ja kere ühendamiseks

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US2540878A (en) * 1948-08-17 1951-02-06 John T Hayward Submergible drilling rig foundation and method of constructing same
US2589146A (en) * 1949-10-06 1952-03-11 Charles T Samuelson Submersible deepwater drilling apparatus
US3099912A (en) * 1955-10-21 1963-08-06 Kerr Mc Gee Oil Ind Inc Submersible barge for submarine operations
US3872679A (en) * 1973-12-21 1975-03-25 Chevron Res Apparatus and method for reducing the forces on extendible legs of a floating vessel
US3898946A (en) * 1972-09-29 1975-08-12 Jan Zadrozny Sea-going high-commercial-speed displacement vessel
US5117774A (en) * 1990-04-26 1992-06-02 Cofordo 311 Pty Limited Underwater viewing craft

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Publication number Priority date Publication date Assignee Title
EP1560747A4 (en) * 2002-11-12 2007-01-17 Lockheed Corp VEHICLE VARIABLE DEPTH VEHICLE

Patent Citations (6)

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Publication number Priority date Publication date Assignee Title
US2540878A (en) * 1948-08-17 1951-02-06 John T Hayward Submergible drilling rig foundation and method of constructing same
US2589146A (en) * 1949-10-06 1952-03-11 Charles T Samuelson Submersible deepwater drilling apparatus
US3099912A (en) * 1955-10-21 1963-08-06 Kerr Mc Gee Oil Ind Inc Submersible barge for submarine operations
US3898946A (en) * 1972-09-29 1975-08-12 Jan Zadrozny Sea-going high-commercial-speed displacement vessel
US3872679A (en) * 1973-12-21 1975-03-25 Chevron Res Apparatus and method for reducing the forces on extendible legs of a floating vessel
US5117774A (en) * 1990-04-26 1992-06-02 Cofordo 311 Pty Limited Underwater viewing craft

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2934842A1 (fr) * 2008-08-07 2010-02-12 Jean Michel Pons Navire comportant des flotteurs immerges permettant de maintenir la coque au dessus du niveau de la mer
WO2011070198A1 (es) * 2009-12-11 2011-06-16 Grupo De Ingenieria Oceanica, S.L. Buque de cascos sumergibles
ES2361881A1 (es) * 2009-12-11 2011-06-24 Grupo De Ingenieria Oceanica, S.L. Buque de cascos sumergibles.
EP2380807A1 (en) * 2010-04-23 2011-10-26 BMT Nigel Gee Limited A landing craft
WO2012136980A1 (en) * 2011-04-08 2012-10-11 Ocean Surveys, Sciences And Engineering Associates Limited Buoyancy device
US9701377B2 (en) 2012-06-14 2017-07-11 Martin Kuster Semi submarine
WO2013186760A1 (en) * 2012-06-14 2013-12-19 Martin Kuster Semi submarine
US9371111B2 (en) 2012-06-14 2016-06-21 Martin Kuster Semi submarine
FR2997919A1 (fr) * 2012-11-15 2014-05-16 Marie Francois Herve Berguerand Dispositif de navigation rapide a flottaison variable par flotteurs immerges et bras extensibles
US20160311501A1 (en) * 2013-07-11 2016-10-27 Ren Wang One dual purpose boat
US9809279B2 (en) * 2013-07-11 2017-11-07 V-Mark Enterprise Ltd. One dual purpose boat
CN107580579A (zh) * 2015-03-04 2018-01-12 Csl企业股份有限公司 用于船只控制的系统
FR3039127A1 (fr) * 2015-07-21 2017-01-27 Acri-In Sas Dispositif de relevage et de maintien de l'horizontalite de l'assiette des navires multicoques a flot et a l'amarrage
WO2017167927A1 (en) * 2016-03-31 2017-10-05 Edward Johnston Marine vessel

Also Published As

Publication number Publication date
MX2008002328A (es) 2008-03-14
WO2007126413A3 (en) 2008-04-17
EP1919766B1 (en) 2009-10-07
NO20081373L (no) 2008-03-14
WO2007126413A2 (en) 2007-11-08
BRPI0614947A2 (pt) 2011-04-26
EP1919766A2 (en) 2008-05-14
CA2617444A1 (en) 2007-11-08

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Owner name: LOCKHEED MARTIN CORPORATION, MARYLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MADDEN, LEWIS D.;BAILEY, STEPHEN L.;REEL/FRAME:017820/0188;SIGNING DATES FROM 20060302 TO 20060328

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION