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WO2008116964A1 - Multi-purpose icebreaker - Google Patents

Multi-purpose icebreaker Download PDF

Info

Publication number
WO2008116964A1
WO2008116964A1 PCT/FI2008/000045 FI2008000045W WO2008116964A1 WO 2008116964 A1 WO2008116964 A1 WO 2008116964A1 FI 2008000045 W FI2008000045 W FI 2008000045W WO 2008116964 A1 WO2008116964 A1 WO 2008116964A1
Authority
WO
WIPO (PCT)
Prior art keywords
icebreaker
vessel
propulsion devices
azimuth
ice
Prior art date
Application number
PCT/FI2008/000045
Other languages
French (fr)
Inventor
Harri Eronen
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
Priority to CA002680509A priority Critical patent/CA2680509A1/en
Priority to US12/532,305 priority patent/US20100107949A1/en
Publication of WO2008116964A1 publication Critical patent/WO2008116964A1/en
Priority to NO20093052A priority patent/NO20093052L/en

Links

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
    • B63B35/08—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.
  • the document US-5,996,520 presents an icebreaking ship having azimuth propellers at the both ends of the ship. Because of the characteristics of the azimuth propellers the ship is easily capable to move into any direction.
  • the special feature of this vessel is that the hull of the ship is specially designed to move sideward, which means slightly a side against the ice field. The purpose of that is to make into the ice field a passage, which is wider than the breadth of the ship.
  • 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 ore 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 ore 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 ore 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.
  • Fig. 1 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. For improving steering in difficult circumstances and for dynamic positioning 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 20a and 20b 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 20a and 20b 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.

Landscapes

  • 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)

Abstract

The invention is a multi-purpose icebreaker (10) having main propulsion devices (20, 30) in the front part of the vessel and steering device (21, 22) in the aft part of the vessel. This kind of icebreaking vessel has excellent steering characteristics and it can efficiently and constantly push the ice field. The main propulsion devices at the bow are azimuth propulsion devices (20) or conventional shaft propulsion devices (30). The steering devices (21, 22) are tunnel thrusters (21) or smaller azimuth thrusters (22).

Description

MULTI-PURPOSE ICEBREAKER
FIELD OF THE INVENTION
The present invention relates to a multi-purpose icebreaker having a front part, an aft part, main propulsion devices and steering devices.
PRIOR ART
The conventional icebreakers are provided with shaft propellers and rudders at the stern of the vessel. In order to increase power for ice breaking the shaft propellers were added also in the front of the vessel.
In the first multi-purpose icebreakers the shaft propellers and rudders at the stern of the vessel have been substituted by azimuth propellers, which essentially improved the steering characteristics of the ship. Therefore in the front of the vessel it was necessary to provide only with several steering tunnel thrusters.
Many different modifications have been presented for improving icebreaking vessels. The document US-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.
The document US-5,996,520 presents an icebreaking ship having azimuth propellers at the both ends of the ship. Because of the characteristics of the azimuth propellers the ship is easily capable to move into any direction. The special feature of this vessel is that the hull of the ship is specially designed to move sideward, which means slightly a side against the ice field. The purpose of that is to make into the ice field a passage, which is wider than the breadth of the ship.
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. SUMMARY OF THE INVENTION
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.
The benefit of the arrangement is that this kind of icebreaking vessel has excellent steering characteristics. By using the main azimuth propulsion devices located at the bow of the ship, 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.
According to a preferred embodiment of the invention 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.
According to a second preferred embodiment of the invention in the multi-purpose icebreaker 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 ore more azimuth propulsion devices, which are smaller than the main propulsion devices in the front part of the ship.
According to a third preferred embodiment of the invention in the multi-purpose icebreaker 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 ore more azimuth propulsion devices.
According to a fourth preferred embodiment of the invention in the multi-purpose icebreaker 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 ore more tunnel thrusters.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention is described in the following by means of an example, with reference to the appended drawings in which
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.
DESCRIPTION OF THE DRAWINGS
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. However, the attachment may be for other reasons, as described below.
In Fig. 1 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. For improving steering in difficult circumstances and for dynamic positioning 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. In Fig. 2 the icebreaker 10 is also provided with two azimuth propulsion devices 20 at the bow of the vessel. In this embodiment of the icebreaker 10 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.
In 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. In order to improve steering 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. In Fig. 4 the turret 40 is provided with oil tubes 41 and anchor wires 42. In this case 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. According to Fig. 1 the icebreaker 10 is provided with an inward curved towing notch 15, two azimuth propulsion devices 20a and 20b at the bow of the vessel, and three steering tunnel thrusters 21 at the stern of the vessel. In the bottom of the icebreaker 10 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. In Fig. 5 it can be clearly seen the protective function of the ice plough 16. The azimuth propulsion devices 20a and 20b 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.
It is obvious to a person skilled in the art that the different embodiments of the invention may vary within the scope of the claims presented below.
REFERENCE NUMERALS
10 Multi-purpose icebreaker
11 Vessel
12 Water
15 Towing notch 16 Ice plough
20 Main azimuth propulsion device
21 Steering tunnel thruster
22 Smaller azimuth propulsion device 30 Conventional shaft propeller 40 Turret
41 Oil tube
42 Anchor wire

Claims

1. Multi-purpose icebreaker (10) having a front part, an aft part, at least one main propulsion device (20, 30) and at least one steering device (21 , 22), characterized in that in the multi-purpose icebreaker (10) at least one main propulsion device (20, 30) is located in the front part of the vessel and at least one steering device (21, 22) is located in the aft part of the vessel.
2. Multi-purpose icebreaker (10) according to claim 1, characterized in - that the multi-purpose icebreaker (10) has in the front part of vessel two main propulsion devices (20, 30), which are azimuth propulsion devices (20), and that in the aft part of the vessel the steering device (21 , 22) comprises one or more tunnel thrusters (21).
3. Multi-purpose icebreaker (10) according to claim 1, characterized in that in the multi-purpose icebreaker (10) the main propulsion device (20, 30) in the front part of vessel comprises two azimuth propulsion devices (20), and that the steering device (21 , 22) in the aft part of the vessel comprises one ore more azimuth propulsion devices (22), which are smaller than the main propulsion devices in the front part of the ship.
4. Multi-purpose icebreaker (10) according to claim 1, characterized in that in the multi-purpose icebreaker (10) the main propulsion device (20, 30) in the front part of the vessel comprises two conventional shaft propulsion devices (30), and - that the steering device (21 , 22) in the aft part of the vessel comprises one ore more azimuth propulsion devices (22).
5. Multi-purpose icebreaker (10) according to claim 1, characterized in that in the multi-purpose icebreaker (10) the main propulsion device (20, 30) in the front part of the vessel comprises two conventional shaft propulsion devices (30), and that the steering device (21 , 22) in the aft part of the vessel comprises one ore more tunnel thrusters (21).
PCT/FI2008/000045 2007-03-23 2008-03-20 Multi-purpose icebreaker WO2008116964A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA002680509A CA2680509A1 (en) 2007-03-23 2008-03-20 Multi-purpose icebreaker
US12/532,305 US20100107949A1 (en) 2007-03-23 2008-03-20 Multi-purpose icebreaker
NO20093052A NO20093052L (en) 2007-03-23 2009-09-23 multipurpose Icebreaker

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20070241 2007-03-23
FI20070241A FI20070241L (en) 2007-03-23 2007-03-23 Multipurpose icebreaker

Publications (1)

Publication Number Publication Date
WO2008116964A1 true WO2008116964A1 (en) 2008-10-02

Family

ID=37930043

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2008/000045 WO2008116964A1 (en) 2007-03-23 2008-03-20 Multi-purpose icebreaker

Country Status (6)

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

Cited By (10)

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WO2010103170A2 (en) 2009-03-12 2010-09-16 Aker Arctic Technology Inc. Vessel or floating structure operating in ice-covered waters and method of using it
WO2011097002A1 (en) * 2010-02-03 2011-08-11 Exxonmobil Upstream Research Company Dispersion of oil using artificially generated waves
SG173942A1 (en) * 2010-02-08 2011-09-29 Daewoo Shipbuilding & Marine Marine structure having azimuth propulsion devices
US20110239923A1 (en) * 2010-03-31 2011-10-06 Niels Peter Elmbo Icebreaking vessel
WO2011120527A3 (en) * 2010-03-31 2011-11-17 Maersk Supply Service A/S Icebreaking vessel and method of breaking ice
US9242705B2 (en) 2010-03-31 2016-01-26 Maersk Supply Service A/S Icebreaking vessel and method of breaking ice
EP2812240A4 (en) * 2012-02-07 2016-01-27 Rolls Royce Ab A propulsor arrangement for a marine vessel and a marine vessel constructed with this type of propulsor arrangement
US9255374B2 (en) 2010-03-31 2016-02-09 Maersk Supply Service A/S Icebreaking vessel and method of breaking ice
RU2616503C2 (en) * 2015-08-31 2017-04-17 Федеральное государственное унитарное предприятие "Крыловский государственный научный центр" (ФГУП "Крыловский государственный научный центр") Ice-breaking vessel with thruster performed with help of fire extinguishing pump aboard disabled ships
EP3368405A4 (en) * 2015-10-28 2019-06-12 Ils, Oy Ice breaking vessel

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SE537962C2 (en) * 2014-05-08 2015-12-15 Stena Rederi Ab Ice breaking device
RU2655177C1 (en) * 2017-04-06 2018-05-24 Федеральное государственное унитарное предприятие "Крыловский государственный научный центр" Ice breaker (options)
CN111976904B (en) * 2020-08-19 2022-09-27 哈尔滨工程大学 Auxiliary ice breaking power system and ice breaking method for icebreaker

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WO1998046477A1 (en) * 1997-04-11 1998-10-22 Den Norske Stats Oljeselskap A.S A two-part ship for use in oil transport in arctic waters

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
WO2010103170A3 (en) * 2009-03-12 2011-04-14 Aker Arctic Technology Inc. Vessel or floating structure operating in ice-covered waters and method of using it
WO2010103170A2 (en) 2009-03-12 2010-09-16 Aker Arctic Technology Inc. Vessel or floating structure operating in ice-covered waters and method of using it
WO2011097002A1 (en) * 2010-02-03 2011-08-11 Exxonmobil Upstream Research Company Dispersion of oil using artificially generated waves
SG173942A1 (en) * 2010-02-08 2011-09-29 Daewoo Shipbuilding & Marine Marine structure having azimuth propulsion devices
EA022073B1 (en) * 2010-03-31 2015-10-30 Мерск Сепплай Сервис А/С An icebreaking vessel
WO2011120527A3 (en) * 2010-03-31 2011-11-17 Maersk Supply Service A/S Icebreaking vessel and method of breaking ice
US9056658B2 (en) 2010-03-31 2015-06-16 Maersk Supply Service A/S Icebreaking vessel
US20110239923A1 (en) * 2010-03-31 2011-10-06 Niels Peter Elmbo Icebreaking vessel
US9242705B2 (en) 2010-03-31 2016-01-26 Maersk Supply Service A/S Icebreaking vessel and method of breaking ice
US9255374B2 (en) 2010-03-31 2016-02-09 Maersk Supply Service A/S Icebreaking vessel and method of breaking ice
EP2812240A4 (en) * 2012-02-07 2016-01-27 Rolls Royce Ab A propulsor arrangement for a marine vessel and a marine vessel constructed with this type of propulsor arrangement
RU2622168C2 (en) * 2012-02-07 2017-06-13 Роллс-Ройс Аб Propulsion system for sea craft and sea craft, containing propulsion system of this type
EP2812240B1 (en) 2012-02-07 2019-01-23 Rolls-Royce AB A propulsor arrangement for a marine vessel and a marine vessel constructed with this type of propulsor arrangement
RU2616503C2 (en) * 2015-08-31 2017-04-17 Федеральное государственное унитарное предприятие "Крыловский государственный научный центр" (ФГУП "Крыловский государственный научный центр") Ice-breaking vessel with thruster performed with help of fire extinguishing pump aboard disabled ships
EP3368405A4 (en) * 2015-10-28 2019-06-12 Ils, Oy Ice breaking vessel

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US20100107949A1 (en) 2010-05-06
RU2009139056A (en) 2011-04-27
FI20070241A0 (en) 2007-03-23
CA2680509A1 (en) 2008-10-02
FI20070241L (en) 2008-09-24
RU2012148892A (en) 2014-05-27
NO20093052L (en) 2009-09-23

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