US20100107949A1 - Multi-purpose icebreaker - Google Patents

Multi-purpose icebreaker Download PDF

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Publication number
US20100107949A1
US20100107949A1 US12/532,305 US53230508A US2010107949A1 US 20100107949 A1 US20100107949 A1 US 20100107949A1 US 53230508 A US53230508 A US 53230508A US 2010107949 A1 US2010107949 A1 US 2010107949A1
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US
United States
Prior art keywords
icebreaker
vessel
propulsion devices
azimuth
ice
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
US12/532,305
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English (en)
Inventor
Harri Eronen
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Equinor Energy AS
Original Assignee
Statoil ASA
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 Statoil ASA filed Critical Statoil ASA
Assigned to STATOILHYDRO ASA reassignment STATOILHYDRO ASA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ERONEN, HARRI
Publication of US20100107949A1 publication Critical patent/US20100107949A1/en
Assigned to STATOIL ASA reassignment STATOIL ASA CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: STATOILHYDRO ASA
Assigned to STATOIL PETROLEUM AS reassignment STATOIL PETROLEUM AS ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: STATOIL ASA
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 
    • 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
    • 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
    • B63B27/24—Arrangement of ship-based loading or unloading equipment for cargo or passengers of pipe-lines
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/125—Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction, e.g. podded azimuthing thrusters

Definitions

  • the present invention relates to a multi-purpose icebreaker having a front part, an aft part, main propulsion devices and steering devices.
  • the conventional icebreakers are provided with shaft propellers and rudders at the stern of the vessel.
  • shaft propellers were added also in the front of the vessel.
  • U.S. Pat. No. 5,218,917 presents a special icebreaking ship, which has azimuth propellers at the stern of the ship.
  • the special feature of this vessel is that only the aft part of the ship is optimized for braking ice and the forward part of the ship is optimized for open water conditions. The purpose of this is that normally in open water the ship is moving forward and in heavy ice conditions the ship is breaking ice by moving in the aft direction.
  • An object of the present invention is to provide an improved multi-purpose icebreaker.
  • the second purpose of the invention is to provide a multi-purpose icebreaker, which has improved steering characteristics and which is efficient at continuous slow speed in heavy ice conditions, especially when ice ridges may occur.
  • the features of the invention are described in the characterizing part of claim 1 .
  • the icebreaker according to the invention is characterized in that in the multi-purpose icebreaker at least one main propulsion device is located in the front part of the vessel and at least one steering device is located in the aft part of the vessel.
  • this kind of icebreaking vessel has excellent steering characteristics.
  • the vessel can easily turn to any direction.
  • the icebreaking vessel can push the ice field efficiently forward and also to both sides if for example the passage has to be made wider for the ship towed.
  • the icebreaking ship provided with azimuth propulsion devices at the front part of the ship is especially useful in the situations, where the ship has to move slowly in the in heavy ice conditions, and when ramming is not possible. These characteristics are also useful, when the ship has to stay at a predetermined position in a moving ice field. Such needs occur for example on the oil fields at arctic seas.
  • the multi-purpose icebreaker has in the front part of vessel two main propulsion devices, which are azimuth propulsion devices, and in the aft part of the vessel the steering device comprises one or more tunnel thrusters.
  • the main propulsion device in the front part of vessel comprises two azimuth propulsion devices, and that the steering device in the aft part of the vessel comprises one or more azimuth propulsion devices, which are smaller than the main propulsion devices in the front part of the ship.
  • the main propulsion device in the front part of the vessel comprises two conventional shaft propulsion devices, and the steering device in the aft part of the vessel comprises one or more azimuth propulsion devices.
  • the main propulsion device in the front part of the vessel comprises two conventional shaft propulsion devices, and the steering device in the aft part of the vessel comprises one or more tunnel thrusters.
  • FIG. 1 presents a side view of an embodiment of the multi-purpose icebreaker according to the invention.
  • FIG. 2 presents a side view of the second embodiment of the multi-purpose icebreaker according to the invention.
  • FIG. 3 presents a side view of the third embodiment of the multi-purpose icebreaker according to the invention.
  • FIG. 4 presents a side view of the multi-purpose icebreaker of FIG. 1 attached to a turret and operating as an offloading icebreaker on an oil field under the sea
  • FIG. 5 presents a bottom view of an embodiment of the multi-purpose icebreaker according to the invention.
  • FIG. 1 presents a multi-purpose icebreaker 10 being attached to another ship 11 .
  • the purpose of the attachment is for example that the icebreaker 10 is towing the other ship 11 .
  • the attachment may be for other reasons, as described below.
  • the water 12 is described as open water, but of course because the vessel 10 is an icebreaker, there may be also solid ice or ice ridges on the surface of the water 12 .
  • the multi-purpose icebreaker 10 in FIG. 1 is provided with two azimuth propulsion devices 20 at the bow of the vessel. These azimuth propulsion devices 20 provide the only propulsion thrust for the vessel 10 .
  • the multi-purpose icebreaker 10 is also provided with three steering tunnel thrusters 21 at the stern of the vessel.
  • An advantage of the pulling mode azimuth propulsion devices 20 at the bow of the icebreaker 10 of FIG. 1 is that it is very easy to steer the icebreaker in the heavy ice conditions.
  • the icebreaker 10 can easily make turns and it can be steered for widening the breadth of the required channel to be formed in the ice.
  • the propulsion devices 20 at the bow of the icebreaker 10 also give very good characteristics for the vessel when it is needed to move forward continuously at slow speed and ramming is not possible.
  • the presented icebreaker 10 can push through the solid ice and ice ridges.
  • the second advantage of the propulsion devices 20 at the bow of the icebreaker 10 of FIG. 1 is that the propellers in front of the vessel crush the ice blocks smaller. Then the ice blocks do not disturb the other vessel to be towed or some other equipment close the vessel, as described below.
  • FIG. 2 presents the second embodiment of the multi-purpose icebreaker 10 according to the invention.
  • the icebreaker 10 is also attached to another ship 11 for towing or other purpose.
  • the icebreaker 10 is also provided with two azimuth propulsion devices 20 at the bow of the vessel.
  • these azimuth propulsion devices 20 are not the only propulsion apparatuses of the vessel 10 , but they provide the main propulsion thrust for the icebreaker 10 .
  • the difference of the icebreaker 10 of FIG. 2 compared to the icebreaker 10 of FIG. 1 is that in FIG. 2 the icebreaker 10 is provided with two smaller azimuth thrusters 22 at the stern of the vessel 10 .
  • the azimuth thrusters 22 are mainly intended for improving steering in difficult circumstances and for dynamic positioning. However, they can also be used for forward thrust together with the main azimuth propulsion devices 20 at the bow of the vessel, so increasing the total forward thrust of the icebreaker 10 .
  • FIG. 3 there is described the third embodiment of the multi-purpose icebreaker 10 according to the invention.
  • This icebreaker 10 is provided with conventional shaft propellers 30 in front of the vessel. These shaft propellers 30 provide the main forward thrust for the vessel 10 .
  • the multi-purpose icebreaker 10 is provided with three steering tunnel thrusters 21 at the bow of the vessel and with two smaller azimuth thrusters 22 at the stern of the vessel 10 .
  • the small azimuth thrusters 22 at the stern of the vessel 10 are mainly intended for improving steering in difficult circumstances and for dynamic positioning. However, as described in FIG. 2 , they can also be used for increasing forward thrust together with the conventional shaft propellers 30 , which are the main propulsion devices of the icebreaker 10 .
  • FIG. 4 presents the multi-purpose icebreaker 10 of FIG. 1 provided with a turret 40 for loading oil to the tanker vessel 11 attached to the icebreaker 10 .
  • the turret 40 is provided with oil tubes 41 and anchor wires 42 .
  • the azimuth propulsion devices 20 at the bow of the icebreaker 10 are very useful because they keep the turret 40 , oil tubes 41 and anchor wires 42 clear from ice.
  • the propellers of the azimuth propulsion devices 20 also crush the large ice blocks smaller.
  • FIG. 5 presents a bottom view of a multi-purpose icebreaker 10 according to the invention.
  • the icebreaker 10 is provided with an inward curved towing notch 15 , two azimuth propulsion devices 20 a and 20 b at the bow of the vessel, and three steering tunnel thrusters 21 at the stern of the vessel.
  • the turret 40 is located in the middle of the ice plough 16 , so that the ice plough 16 forms a protecting shelter around the turret 40 .
  • FIG. 5 it can be clearly seen the protective function of the ice plough 16 .
  • the azimuth propulsion devices 20 a and 20 b at the bow of the vessel 10 push the ice blocks along the sides of the ice plough 16 , so preventing the ice blocks from striking the turret 40 or the equipment, such as the oil tubes 41 and anchoring wires 42 attached to the turret 40 .

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Earth Drilling (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
US12/532,305 2007-03-23 2008-03-20 Multi-purpose icebreaker Abandoned US20100107949A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI20070241A FI20070241L (fi) 2007-03-23 2007-03-23 Monitoiminen jäänmurtaja
FI20070241 2007-03-23
PCT/FI2008/000045 WO2008116964A1 (en) 2007-03-23 2008-03-20 Multi-purpose icebreaker

Publications (1)

Publication Number Publication Date
US20100107949A1 true US20100107949A1 (en) 2010-05-06

Family

ID=37930043

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/532,305 Abandoned US20100107949A1 (en) 2007-03-23 2008-03-20 Multi-purpose icebreaker

Country Status (6)

Country Link
US (1) US20100107949A1 (fi)
CA (1) CA2680509A1 (fi)
FI (1) FI20070241L (fi)
NO (1) NO20093052L (fi)
RU (2) RU2009139056A (fi)
WO (1) WO2008116964A1 (fi)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170174295A1 (en) * 2014-05-08 2017-06-22 Stena Rederi Ab Arrangement for Ice-Breaking
RU2655177C1 (ru) * 2017-04-06 2018-05-24 Федеральное государственное унитарное предприятие "Крыловский государственный научный центр" Ледокольное судно (варианты)
CN111976904A (zh) * 2020-08-19 2020-11-24 哈尔滨工程大学 一种破冰船辅助破冰动力系统及破冰方法

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI125245B (fi) 2009-03-12 2015-07-31 Aker Arctic Technology Inc Jääpeitteisissä vesissä toimiva alus tai kelluva rakenne ja sen käyttömenetelmä
US20120285898A1 (en) * 2010-02-03 2012-11-15 Nedwed Timothy J Dispersion of Oil Using Artificially Generated Waves
KR100983084B1 (ko) * 2010-02-08 2010-09-17 대우조선해양 주식회사 선회식 추진장치를 갖는 해양 구조물
US9056658B2 (en) * 2010-03-31 2015-06-16 Maersk Supply Service A/S Icebreaking vessel
EA022074B1 (ru) 2010-03-31 2015-10-30 Мерск Сепплай Сервис А/С Ледокольное судно
CA2794933C (en) * 2010-03-31 2016-09-27 Maersk Supply Service A/S An icebreaking vessel
DK177707B1 (da) 2010-03-31 2014-03-24 Maersk Supply Service As Fremgangsmåde til brydning af is
US9457880B2 (en) * 2012-02-07 2016-10-04 Rolls-Royce Ab Propulsor arrangement for a marine vessel and a marine vessel constructed with this type of propulsor arrangement
RU2616503C2 (ru) * 2015-08-31 2017-04-17 Федеральное государственное унитарное предприятие "Крыловский государственный научный центр" (ФГУП "Крыловский государственный научный центр") Ледокольное судно с подруливающим устройством, выполненным с использованием штатного насоса тушения пожаров на аварийных судах
FI128428B (fi) * 2015-10-28 2020-05-15 Ils Oy Jäätä murtava alus

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3176645A (en) * 1963-04-25 1965-04-06 Shell Oil Co Ship positioning apparatus
US5218917A (en) * 1991-03-18 1993-06-15 Kvaerner Masa-Yards Oy Icebreaking ship
US5615630A (en) * 1992-12-14 1997-04-01 Finnyards Oy Stern arrangement for a ship
US5996520A (en) * 1997-02-27 1999-12-07 Kvaerner Masa-Yards Oy Icebreaking method and icebreaker
US20100226723A1 (en) * 2005-04-25 2010-09-09 Gary Chouest Offshore petroleum discharge system
US7958835B2 (en) * 2007-01-01 2011-06-14 Nagan Srinivasan Offshore floating production, storage, and off-loading vessel for use in ice-covered and clear water applications

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6162105A (en) * 1997-04-11 2000-12-19 Den Norske Stats Oljeselskap A.S. Two-part ship for use in oil transport in arctic waters

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3176645A (en) * 1963-04-25 1965-04-06 Shell Oil Co Ship positioning apparatus
US5218917A (en) * 1991-03-18 1993-06-15 Kvaerner Masa-Yards Oy Icebreaking ship
US5615630A (en) * 1992-12-14 1997-04-01 Finnyards Oy Stern arrangement for a ship
US5996520A (en) * 1997-02-27 1999-12-07 Kvaerner Masa-Yards Oy Icebreaking method and icebreaker
US20100226723A1 (en) * 2005-04-25 2010-09-09 Gary Chouest Offshore petroleum discharge system
US7958835B2 (en) * 2007-01-01 2011-06-14 Nagan Srinivasan Offshore floating production, storage, and off-loading vessel for use in ice-covered and clear water applications

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170174295A1 (en) * 2014-05-08 2017-06-22 Stena Rederi Ab Arrangement for Ice-Breaking
RU2655177C1 (ru) * 2017-04-06 2018-05-24 Федеральное государственное унитарное предприятие "Крыловский государственный научный центр" Ледокольное судно (варианты)
CN111976904A (zh) * 2020-08-19 2020-11-24 哈尔滨工程大学 一种破冰船辅助破冰动力系统及破冰方法

Also Published As

Publication number Publication date
RU2009139056A (ru) 2011-04-27
RU2012148892A (ru) 2014-05-27
CA2680509A1 (en) 2008-10-02
FI20070241A0 (fi) 2007-03-23
FI20070241L (fi) 2008-09-24
NO20093052L (no) 2009-09-23
WO2008116964A1 (en) 2008-10-02

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AS Assignment

Owner name: STATOILHYDRO ASA,NORWAY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ERONEN, HARRI;REEL/FRAME:023371/0561

Effective date: 20090917

AS Assignment

Owner name: STATOIL ASA, NORWAY

Free format text: CHANGE OF NAME;ASSIGNOR:STATOILHYDRO ASA;REEL/FRAME:031528/0807

Effective date: 20091102

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Effective date: 20130502

STCB Information on status: application discontinuation

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