US3817199A - Landing craft for conveying dry cargo over ice - Google Patents

Landing craft for conveying dry cargo over ice Download PDF

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Publication number
US3817199A
US3817199A US00231154A US23115472A US3817199A US 3817199 A US3817199 A US 3817199A US 00231154 A US00231154 A US 00231154A US 23115472 A US23115472 A US 23115472A US 3817199 A US3817199 A US 3817199A
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United States
Prior art keywords
vessel
submerged
semi
hull
ice
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Expired - Lifetime
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US00231154A
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English (en)
Inventor
J Schirtzinger
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Air Logistics Corp
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Air Logistics Corp
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Filing date
Publication date
Application filed by Air Logistics Corp filed Critical Air Logistics Corp
Priority to US00231154A priority Critical patent/US3817199A/en
Priority to FI525/73A priority patent/FI55473C/fi
Priority to DE19732309386 priority patent/DE2309386A1/de
Priority to JP2273373A priority patent/JPS5647035B2/ja
Priority to CA164,821A priority patent/CA965647A/en
Priority to SE7302840A priority patent/SE399681B/xx
Priority to GB976973A priority patent/GB1389532A/en
Priority to IT67545/73A priority patent/IT977939B/it
Priority to SU731894803A priority patent/SU917690A3/ru
Application granted granted Critical
Publication of US3817199A publication Critical patent/US3817199A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/42—Steering or dynamic anchoring by propulsive elements; Steering or dynamic anchoring by propellers used therefor only; Steering or dynamic anchoring by rudders carrying propellers
    • 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 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/14—Arrangement of ship-based loading or unloading equipment for cargo or passengers of ramps, gangways or outboard ladders ; Pilot lifts
    • B63B27/143—Ramps
    • 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
    • B63B35/08—Ice-breakers or other vessels or floating structures for operation in ice-infested waters; Ice-breakers, or other vessels or floating structures having equipment specially adapted therefor
    • B63B35/12—Ice-breakers or other vessels or floating structures for operation in ice-infested waters; Ice-breakers, or other vessels or floating structures having equipment specially adapted therefor having ice-cutters
    • 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
    • B63B2001/128—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly comprising underwater connectors between the hulls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/14—Arrangement of ship-based loading or unloading equipment for cargo or passengers of ramps, gangways or outboard ladders ; Pilot lifts
    • B63B2027/141—Arrangement of ship-based loading or unloading equipment for cargo or passengers of ramps, gangways or outboard ladders ; Pilot lifts telescopically extendable

Definitions

  • ABSTRACT There is provided a vessel consisting of one or more 52] us. (:1 114/42, 114/.5 D, 114/435, Submerged Propulsion hulls Connected to a Cargo 1 14/61 rymg platform suspended over ice by a plurality of in- 51 Im. c1 B63b 35/12 tercovneqing 9 7 At least the frontal columns [58] F1616 of Search 114/4042, Comm" 1 PP Systems for Cutting a P 4/5 D, R, 151 61, 7O 16 R 9/8 through 1ce between the submerged hull or hulls and F; 61/465 46; 11 5/1 R the platform.
  • the columns are preferably pivotably mounted to both the hull or hulls and the platform to [56] References Cited plermit adjustmgnt of the adngle of the colurlnn during t e ice cutting unction an to permit the p atform to UNITED STATES PATENTS be lowered onto the surface of the ice when the cargo 2,039,399 5/1936 Englis 114 70 meets its destination 2,545,104 3/1951 Musial 114/42 2,863,293 12/1958 Plumer 114/5 D In the Preffirred Construcflon, the Platform Games 8 2 997 352 3/19 1 suderow 1/4 5 pallet upon which cargo is stored during transit.
  • the 3,068,830 12/1962 Dickerson 115/1 R pallet is slidably mounted on the platform and can be 3,085,533 4/1963 Goryl et a1.
  • 114/16 R removed at the destination Once the cargo i5 ROSDCI' removed may be returned to the platform for 8 3,492,965 2/1970 Wayfield 114/151 return trip 3,517,632 6/1970 Gray .1 ll4/6l 6/1970 Wanzer 114/151 25 Claims, 3 Drawing; Figures LANDING CRAFT FOR CONVEYING DRY CARGO OVER ICE BACKGROUND OF THE INVENTION
  • Transportation of equipment for the exploration and production of petroleum, gas and mineral present in icebound areas such as the north slope of Alaska and the islands of the Canadian Arctic has been severely limited by high cost, accessibility by sea for two months of the year, or less, and the size and weight limitations of airborne carriers when used during the remaining months.
  • the system consists of semi-submerged vessels having one or more hulls submerged beneath the surface of the ice and which contains propulsion and control means. Above the surface of the ice there is maintained a cargo platform which is connected to the bull or hulls of the vessel by a plurality of supporting columns, at least the frontal columns containing bow facing ice chipping means adapted to cut a path through the ice.
  • the columns are preferably vertically pivotable in order to maintain the platform above the surface of the ice during transit and to permit the platform to be lowered to the ice surface once the vessel reaches its destination.
  • the platform is adapted to retain cargo carrying pallets, plant sub-constructions and the like.
  • a pallet may be rolled off the platform, taken to its destination, the cargo removed and returned to the vessel.
  • the pallet is, in substance, a sub-assembly it is simply removed from the platform and the cargo vessel returned to its place of origin to pick up a new cargo or to transport cargo back to the point of origin or to some other destination.
  • FIG. 1 is an illustration of the cargo transport system in its conventional operation during transport over ice and shows dual hull construction.
  • FIG. 2 is an illustration of the removal of a pallet from the vessel at the point of destination and illustrates single hull construction.
  • FIG. 3 is an illustration of a navigated system provided for one or more of the submerged hulls of the cargo transport system of this invention.
  • the invention basically consists of a semi-submerged vessel having 5 submerged buoyant hull or hulls which preferably contain propulsion and control systems.
  • the submerged hull or hulls are connected to a platform maintained above the ice surface by columns, preferably pivotably adjustable in a vertical direction, with at least the frontal columns containing bow oriented ice chipping systems which cut a path through the surface of the ice.
  • the columns are positioned along both the starboard and port sides of vessel.
  • the power required to cut the path is minimal with respect to the power employed by ice breakers and the like since only the columns are in contact with the ice.
  • the port and/or starboard portions of the platform house the crew and preferably contain the prime energy source whose power is used to adjust the vertical height or angle of the columns and to provide the power for the propulsion system mounted in the submerged hull or hulls as well as the hull contained monitoring system, the power being transmitted to the hull or hulls through the interconnecting columns.
  • the prime energy source whose power is used to adjust the vertical height or angle of the columns and to provide the power for the propulsion system mounted in the submerged hull or hulls as well as the hull contained monitoring system, the power being transmitted to the hull or hulls through the interconnecting columns.
  • the balance of the surfaced platform is employed to store cargo, preforms, or a pallet upon which cargo is stored.
  • the platform and/or pallet When employed, the platform and/or pallet is fitted with a series of rollers to permit the pallet to be rolled from the platform onto the ice when the vessel reaches its destination after the platform is lowered to the ice surface.
  • the semi-submerged cargo transport system 10 of this invention consists of a pair of submerged spaced hulls 12 preferably maintained at a slight positive buoyancy.
  • the hulls 12 are connected by vanes 14 and rods 28.
  • Vanes 14 may be fixed or adjustable to aid in positioning the vessel relative to the undersurface of the ice.
  • vanes are fixed or not adjustable or are not mounted between the bow and stem sections of hulls 12 port and starboard diving vanes 15 are employed.
  • vanes 15 are provided on unitary hull 13 for adjusting the position of the hull relative to the undersurface of the ice.
  • Hull 13 or hulls 12 contain the propulsion system 16, which is normally a propeller system or water turbine.
  • twin hulls 12 are employed as shown in FIG. 1, steering or turning may be accomplished by varying the thrust of one hull relative to the other.
  • steering may also be accomplished or augmented by rudders 18 located at the ends of the single hulls 12 or unitary hull 13 shown respectively in FIGS. 1 and 2.
  • a resilient bumper 23 to protect the hulls of the vessel, where, due to the buoyancy of the hulls, the system is allowed to come to rest against the undersurface of the ice.
  • hulls 12 or hull 13 preferably contain the fuel used by the vessel, the fuel being fed to engine units 20 on platform 22 through one or more of columns 24.
  • the hulls 12 or hull 13 may also contain the water supply 25 for the crew as well as storage for liquid or fluidizable cargo 27 for transport to or from the icebound areas.
  • the water 25, fuel 29 and cargo 27 compartments are preferably separated flexible diaphragms 31 of bladder construction which allow the water, fuel, and cargo to be supplanted by seawater ballast as they are consumed or discharged without contamination. This also allows the overall buoyancy of the vessel to remain fairly constant throughout operation.
  • the prime source of power which drives the propulsion system employed, as well as the other energy requirements for the transport system may be gas turbines, steam generators, internal combustion enginers, nuclear engines and the like, with gas turbines being preferred for simplicity of operation.
  • the prime source of power generation is preferably mounted on platform 22 in housings 20 to avoid providing air conduits if the power systems are contained in hulls 12 or hull 13.
  • the power source contained in engine rooms 20 must provide the power to operate the ice cutters 26 mounted on column 24, power to generate electricity for the operation of the entire vessel as well as the power to pivot columns 24 to raise and lower platform 22 relative to the ice or land.
  • columns 24 connect the hulls 12 or hull 13 to the platform 22. At least the frontal columns are provided with ice chippers 26. As illustrated, however, all of the columns are provided with ice chippers to cover the possibility of the ice freezing prior to contact with the rearmost columns.
  • the ice chippers used may be similar to the chippers disclosed in US. Pat. No. 3,521,592 to Rosner et a1.
  • the ice chipping cutters 26 preferably consist of a plurality of adjacent ice chipping discs mounted on a pair of parallel shafts which rotate in an opposed direction to toss the chipped ice away from column 24.
  • those portions of columns 24 which may be struck by chips of ice are preferably coated with a reflective elastomeric material (not shown) or a reflective sheet of glass fiber reinforced resin such as Stratoglas alone or back filled with an elastomeric material.
  • the elastomeric material may also be porous to absorb water which aids the cushioning effect to prevent damage to column 24.
  • the ice be, during the advance of the vessel, chipped, as opposed to cut, since less power is required to chip the ice than required to cut the ice.
  • the columns 24 are preferably mounted at an angle of from about to about 45 to the vertical to assure that no lift or diving forces will be imparted to the system during transport due to the action of ice chippers 26.
  • columns 24 are preferably pivotably mounted on interconnecting axis 28 and platform 22. This permits the vertical height of platform 22 to be adjusted relative to hulls 12 or hull 13 to meet deviation in ice thicknesses and to maintain platform 22 above the ice during transit and lower the platform cause pivoting of column 24 relative to hulls 12 or hull 13 and platform 22 in a bow to stem direction.
  • hydraulic pistons 30 may be supplanted by a screw device drive or the like for pivoting columns 24
  • the operational crew for the vessel are housed in cabin 32 which serves as the main nerve center for operation of the vessel.
  • the cabin 32 also, as a minimum, contains radar device 34 and antenna 36 to maintain communication with servicing vessels and the like to permit servicing of the vessel, itself, or for a change of crew.
  • the undersea operation of a hull is monitored by lights 38 employed in conjunction with TV camera 40 and normally contains sonar devices connected by cables to suitable control means 41.
  • the bow of the hull or hulls may also be provided with thrust system 42 comprising intercornmunicating horizontal thrust ports vertical ports 46 and reverse thrust port 48. At least thrust ports 44 and 46 contain reversible motor driven reverse port impellers 50 or water turbines. Thrust ports 46 are used for raising and lowering the vessel, particularly at low speeds.
  • Thrust ports 44 which are horizontally oriented are used to alter the sideward motion of the vessel and are particularly useful in docking operations.
  • Thrust port 48 is used as a reverse thrust port to alter the forward movement of the vessel and serves as a brake. It may contain its own impeller but, preferably, contains a flap valve 52. When thrust ports 44 and 46 are operated such that water taken in it, is forced against flap 52 which opens, and flows out port 48 to provide reverse thrust for the transport system.
  • the motive power for the system is contained on platform 22, it may, as indicated, be contained in the hull or hulls of the vessel 10 with the air required for operation of the engines being supplied through columns 24. This, however, increases hull size and presents some problem of air flow and exhaust. Therefore, it is preferred to maintain the prime motive power for the transport system on the platform 22.
  • platform 22 contains at least zone 54 upon which cargo can be carried or on which a pallet 56 containing cargo is carried or on which a preform for a structure (not shown) under construction may be carried.
  • the pallet may contain its own rolling system 58 or merely skids (not shown) or a rolling system 61) secured provided by platform 22 may be used to discharge the platen 56.
  • platform 22 may contain retractable rolling system 60 to cover all situations, namely, those where platform 54 contains a rolling system 58 and where the pallet does not contain one.
  • FIG. 2 there is illustrated, generally, the manner in which a pallet may be discharged from the vessel at its destination.
  • the pallet contains its own rolling system 58 consisting of a series of spaced axle mounted wheels at each end thereof to be simply rolled from platform 22 after the platform is lowered to the level of the ice or shore line by pivoting columns 24 or simply lowering of the entire hull through the use of the thrust ports 46 or just an elimination of driving power.
  • Crane 62 may be a permanent part of the platform or pallet and used to discharge its contents and return with the pallet to the vessel with the pallet alone or with added cargo for return to the site of origin or some other location.
  • a semi-submerged vessel for the transport of cargo over ice which comprises:
  • ii means for steering the vessel
  • iii means for adjusting the position of the hull relative to the undersurface of ice
  • ii means to control the movement of the vessel
  • iii means for generating energy required for the vessel, and a zone between said raised port and starboard sections for housing cargo;
  • a plurality of columns pivotably secured to and po sitioned along both the port and starboard sides of said platform, and pivotably connected to said submerged hull, said columns adapted to rotate in a bow to stem direction to adjust the angle of the columns during transit and permit the platform to be lowered to the ice or ground level at destination and cooperate with said hull to maintain said platform above the surface of ice during transit, at least the frontal columns containing bow oriented powered ice chipping means for cutting a path through the iceand means to transmit energy from said platform to said submerged hull.
  • a semi-submerged vessel as claimed in claim 1 in which the submerged hull consists of a pair of spaced interconnected hulls, each hull independently provided with propulsion and steering means.
  • a semi-submerged vessel as claimed in claim 2 in which the hulls are also interconnected by adjustable vanes for use in adjusting the position of the hull relative to undersurface of the ice.
  • each interconnecting column contains ice chipping means.
  • each interconnecting column contains ice chipping means.
  • each interconnecting column contains ice chipping means.
  • a semi-submerged vessel as claimed in claim 1 in combination with a cargo carrying pallet adapted to fit into the zone between the raised port and starboard section of the surfaced platform.
  • a semi-submerged vessel as claimed in claim 7 in which the zone between the raised port and starboard positions are equipped with means to receive said pallet in slidable relationship.
  • a semi-submerged vessel as claimed in claim 7 in which the pallet is provided with self contained means for movement onto and from the zone between the raised port and starboard sections of the surfaced platform.
  • a semi-submerged vessel as claimed in claim 2 in combination with a cargo carrying pallet adapted to fit into the zone between the raised port and starboard section of the surfaced platform.
  • a semi-submerged vessel as claimed in claim 11 in which the zone between the raised port and starboard positions are equipped with means to receive said pallet in slidable relationship.
  • a semi-submerged vessel as claimed in claim 1 in which the means to adjust the position of the vessel relative to the undersurface of the ice a horizontally disposed thrustports, extending from one side of a pair of projecting hull sections to the opposed side thereof, said horizontally disposed thrustport intersecting a vertically disposed thrustport extending the width of said extended hull sections, each containing means to induce a flow of water inwardly and outwardly therethrough and a longitudinal thrustport extending from bow of each hull extension and communicating with the intersection of said horizontally and vertically disposed thrustport.
  • a semi-submerged vessel as claimed in claim 2 in which said pair of spaced interconnected hulls at least contain compartments for carrying the fuel and water supply for the vessel.

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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)
  • Ship Loading And Unloading (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
US00231154A 1972-03-02 1972-03-02 Landing craft for conveying dry cargo over ice Expired - Lifetime US3817199A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US00231154A US3817199A (en) 1972-03-02 1972-03-02 Landing craft for conveying dry cargo over ice
FI525/73A FI55473C (fi) 1972-03-02 1973-02-21 Fartyg foer transport av gods i isbelagda farvatten
DE19732309386 DE2309386A1 (de) 1972-03-02 1973-02-24 Fahrzeug zur befoerderung von lasten ueber eis
JP2273373A JPS5647035B2 (de) 1972-03-02 1973-02-27
CA164,821A CA965647A (en) 1972-03-02 1973-02-28 Landing craft for conveying dry cargo over ice
SE7302840A SE399681B (sv) 1972-03-02 1973-02-28 Fartyg for transport av gods i isbelagda farvatten
GB976973A GB1389532A (en) 1972-03-02 1973-02-28 Vessel adapted to pass through floating ice
IT67545/73A IT977939B (it) 1972-03-02 1973-03-01 Natante semisommerso per il tra sporto di carichi su specchi d acqua coperti di ghiaccio
SU731894803A SU917690A3 (ru) 1972-03-02 1973-03-01 Ледокольное полуподводное судно дл транспортировки груза над поверхностью льда

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00231154A US3817199A (en) 1972-03-02 1972-03-02 Landing craft for conveying dry cargo over ice

Publications (1)

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US3817199A true US3817199A (en) 1974-06-18

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US00231154A Expired - Lifetime US3817199A (en) 1972-03-02 1972-03-02 Landing craft for conveying dry cargo over ice

Country Status (9)

Country Link
US (1) US3817199A (de)
JP (1) JPS5647035B2 (de)
CA (1) CA965647A (de)
DE (1) DE2309386A1 (de)
FI (1) FI55473C (de)
GB (1) GB1389532A (de)
IT (1) IT977939B (de)
SE (1) SE399681B (de)
SU (1) SU917690A3 (de)

Cited By (14)

* Cited by examiner, † Cited by third party
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JPS5117997U (de) * 1974-07-26 1976-02-09
US4102288A (en) * 1977-02-28 1978-07-25 Sun Oil Company Limited Operations vessel for ice covered seas
US4350114A (en) * 1980-03-17 1982-09-21 Sea-Log Corporation Semi-submersible tanker with directional ice cutters
US5653188A (en) * 1990-12-13 1997-08-05 Institut Francais Du Petrole Semi submersible platform with porous pontoons
US5694878A (en) * 1994-07-21 1997-12-09 Mitsui Engineering & Shipbuilding Co., Ltd. Semi-submerged catamaran
US20070034189A1 (en) * 2002-07-12 2007-02-15 Isao Kanno Watercraft propulsion system and control method of the system
US20070039532A1 (en) * 2005-08-22 2007-02-22 Lockheed Martin Corporation Multi-Hull Vessel Adapted for Ice-Breaking
CN102390492A (zh) * 2011-11-25 2012-03-28 天津天大滨海船舶与海洋工程研究院有限公司 适用于浅水及滩涂地带的多体式工作船
US20120192781A1 (en) * 2011-02-01 2012-08-02 Stefano Brizzolara Watercraft device
US9003987B2 (en) 2009-03-12 2015-04-14 Aker Arctic Technology Inc. Vessel or floating structure operating in ice-covered waters and method of using it
WO2016001666A1 (en) * 2014-07-04 2016-01-07 Celtic Design Consultants Limited Improved apparatus
CN107161284A (zh) * 2017-05-25 2017-09-15 广船国际有限公司 一种半潜船浮箱水上吊装定位方法
US20210031744A1 (en) * 2019-08-02 2021-02-04 Textron Systems Corporation Amphibious air-cushion vehicle with dual-rail cargo system
US11787383B2 (en) 2019-08-02 2023-10-17 Textron Systems Corporation Utilizing a multi-track cargo handling assembly on an amphibious air-cushion vehicle

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JPS5878296U (ja) * 1981-11-24 1983-05-26 日立造船株式会社 大型海洋構造物据付用作業船
JPS5880430U (ja) * 1981-11-25 1983-05-31 日立造船株式会社 大型海洋構造物据付用作業船
JPS6385732U (de) * 1986-11-25 1988-06-04
RU2431583C1 (ru) 2010-06-08 2011-10-20 Владимир Евгеньевич Иванов Струйный движитель с управляемым вектором тяги
RU2678913C1 (ru) * 2018-03-06 2019-02-04 Владимир Евгеньевич Иванов Многосопловый струйный движитель
RU201223U1 (ru) * 2020-07-03 2020-12-03 Федеральное Государственное Унитарное Предприятие "Росморпорт" Ледокол с двухтопливной энергетической установкой

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US2545104A (en) * 1948-08-25 1951-03-13 Musial John Ice jam remover for bridges
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US3085533A (en) * 1961-09-15 1963-04-16 Exxon Research Engineering Co System for transporting oil under water
US3468277A (en) * 1967-10-09 1969-09-23 Michael W Rosner Ice channel cutter
US3492965A (en) * 1961-06-12 1970-02-03 David J Wayfield Propulsion system and related devices
US3517632A (en) * 1968-07-15 1970-06-30 Dudley Justin Gray Boat suspension system
US3517633A (en) * 1968-09-10 1970-06-30 Mathewson Corp Bow thruster
US3623444A (en) * 1970-03-17 1971-11-30 Thomas G Lang High-speed ship with submerged hulls
US3648635A (en) * 1970-08-03 1972-03-14 Universal Eng Marine transport
US3693729A (en) * 1970-02-19 1972-09-26 Global Marine Inc Air cushion drilling vehicle
US3696624A (en) * 1970-10-02 1972-10-10 Sun Oil Co Delaware Bucket wheel ice cutter

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2039399A (en) * 1932-02-19 1936-05-05 Englis John Vessel
US2545104A (en) * 1948-08-25 1951-03-13 Musial John Ice jam remover for bridges
US2863293A (en) * 1954-09-21 1958-12-09 Noble Drilling Corp Marine drilling rig
US2997852A (en) * 1954-12-30 1961-08-29 De Long Corp Apparatus and method for reecting a supporting structure over a body of water
US3068830A (en) * 1960-04-27 1962-12-18 Philip W Dickerson Boat
US3492965A (en) * 1961-06-12 1970-02-03 David J Wayfield Propulsion system and related devices
US3085533A (en) * 1961-09-15 1963-04-16 Exxon Research Engineering Co System for transporting oil under water
US3468277A (en) * 1967-10-09 1969-09-23 Michael W Rosner Ice channel cutter
US3517632A (en) * 1968-07-15 1970-06-30 Dudley Justin Gray Boat suspension system
US3517633A (en) * 1968-09-10 1970-06-30 Mathewson Corp Bow thruster
US3693729A (en) * 1970-02-19 1972-09-26 Global Marine Inc Air cushion drilling vehicle
US3623444A (en) * 1970-03-17 1971-11-30 Thomas G Lang High-speed ship with submerged hulls
US3648635A (en) * 1970-08-03 1972-03-14 Universal Eng Marine transport
US3696624A (en) * 1970-10-02 1972-10-10 Sun Oil Co Delaware Bucket wheel ice cutter

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5117997U (de) * 1974-07-26 1976-02-09
US4102288A (en) * 1977-02-28 1978-07-25 Sun Oil Company Limited Operations vessel for ice covered seas
US4350114A (en) * 1980-03-17 1982-09-21 Sea-Log Corporation Semi-submersible tanker with directional ice cutters
US5653188A (en) * 1990-12-13 1997-08-05 Institut Francais Du Petrole Semi submersible platform with porous pontoons
US5694878A (en) * 1994-07-21 1997-12-09 Mitsui Engineering & Shipbuilding Co., Ltd. Semi-submerged catamaran
US20070034189A1 (en) * 2002-07-12 2007-02-15 Isao Kanno Watercraft propulsion system and control method of the system
US20070039532A1 (en) * 2005-08-22 2007-02-22 Lockheed Martin Corporation Multi-Hull Vessel Adapted for Ice-Breaking
US7712424B2 (en) * 2005-08-22 2010-05-11 Lockheed Martin Corporation Multi-hull vessel adapted for ice-breaking
US9003987B2 (en) 2009-03-12 2015-04-14 Aker Arctic Technology Inc. Vessel or floating structure operating in ice-covered waters and method of using it
US20120192781A1 (en) * 2011-02-01 2012-08-02 Stefano Brizzolara Watercraft device
US8820260B2 (en) * 2011-02-01 2014-09-02 Stefano Brizzolara Watercraft device
CN102390492A (zh) * 2011-11-25 2012-03-28 天津天大滨海船舶与海洋工程研究院有限公司 适用于浅水及滩涂地带的多体式工作船
WO2016001666A1 (en) * 2014-07-04 2016-01-07 Celtic Design Consultants Limited Improved apparatus
US9970172B2 (en) 2014-07-04 2018-05-15 Celtic Design Consultants Ltd Apparatus for providing access to equipment or structures that require maintenance
GB2527842B (en) * 2014-07-04 2020-08-26 Celtic Design Consultants Ltd Improved apparatus
CN107161284A (zh) * 2017-05-25 2017-09-15 广船国际有限公司 一种半潜船浮箱水上吊装定位方法
US20210031744A1 (en) * 2019-08-02 2021-02-04 Textron Systems Corporation Amphibious air-cushion vehicle with dual-rail cargo system
US11787383B2 (en) 2019-08-02 2023-10-17 Textron Systems Corporation Utilizing a multi-track cargo handling assembly on an amphibious air-cushion vehicle
US11891041B2 (en) * 2019-08-02 2024-02-06 Textron Innovations Inc. Amphibious air-cushion vehicle with dual-rail cargo system

Also Published As

Publication number Publication date
JPS4899886A (de) 1973-12-17
SU917690A3 (ru) 1982-03-30
IT977939B (it) 1974-09-20
FI55473B (fi) 1979-04-30
SE399681B (sv) 1978-02-27
FI55473C (fi) 1979-08-10
DE2309386A1 (de) 1973-09-06
GB1389532A (en) 1975-04-03
CA965647A (en) 1975-04-08
JPS5647035B2 (de) 1981-11-06

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