WO1998030440A1 - Steering and/or propulsion device for a vessel - Google Patents

Steering and/or propulsion device for a vessel Download PDF

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Publication number
WO1998030440A1
WO1998030440A1 PCT/NO1998/000007 NO9800007W WO9830440A1 WO 1998030440 A1 WO1998030440 A1 WO 1998030440A1 NO 9800007 W NO9800007 W NO 9800007W WO 9830440 A1 WO9830440 A1 WO 9830440A1
Authority
WO
WIPO (PCT)
Prior art keywords
propeller
vessel
nozzle assembly
channel
thruster
Prior art date
Application number
PCT/NO1998/000007
Other languages
French (fr)
Inventor
Rune Garen
Original Assignee
Ulstein Propeller As
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 Ulstein Propeller As filed Critical Ulstein Propeller As
Priority to AU55799/98A priority Critical patent/AU5579998A/en
Priority to SI9830168T priority patent/SI0950005T1/en
Priority to DK98900783T priority patent/DK0950005T3/en
Priority to DE69805053T priority patent/DE69805053T2/en
Priority to AT98900783T priority patent/ATE216673T1/en
Priority to EP98900783A priority patent/EP0950005B1/en
Publication of WO1998030440A1 publication Critical patent/WO1998030440A1/en

Links

Classifications

    • 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
    • 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
    • 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
    • B63H2025/425—Propulsive elements, other than jets, substantially used for steering or dynamic anchoring only, with means for retracting, or otherwise moving to a rest position outside the water flow around the hull
    • 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
    • B63H5/14—Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in non-rotating ducts or rings, e.g. adjustable for steering purpose

Definitions

  • Steering and/or propulsion device for a vessel Steering and/or propulsion device for a vessel.
  • the present invention relates to a steering and/or propulsion device for a vessel, preferably for installation in the bow portion of the vessel, comprising a propeller nozzle assembly adapted to be rotated 360° about its vertical axis.
  • Drive power to the propeller and rotational force to the assembly are supplied from devices inside the vessel.
  • the propeller may be of a fixed type or it may be a variable pitch propeller.
  • Propeller/nozzle assemblies of this type are for instance disclosed in the Norwegian patent publication 136038. Such assemblies are commonly called “thrusters”.
  • US 3517633 shows crossing channels in a hull, one channel i the longitudinal direction and one channel in the transverse direction.
  • a propeller which does not work inside a nozzle, has two active positions, one in each channel, but in the same height, whereby the propeller may work in the longitudinal as well as in the transverse direction of the vessel.
  • a downward aperture is situated remote from the propeller, at the rearward exit from the longitudinal channel, for discharge of water for forward propulsion. The propeller is only to work in the two channels.
  • US 4294186 shows a propeller which only has one active position, below the bottom of the vessel.
  • the pull-up position is merely a "storing position”. This is an assembly of the type "retractible thruster” mentioned above.
  • the propeller can only work in the transverse direction of the vessel in the lowered position.
  • the propeller cannot be turned in any of the positions. Therefore, the propeller must be symmetrical in order to be able to work in both of the rotational directions, i.e. in order to produce drive force in both of the transverse directions of the vessel.
  • the propeller can only work in a single level, below the bottom of the vessel.
  • a steering and/or propulsion device of the type mentioned introductorily is provided, and is characterized in that the propeller/nozzle assembly is mounted for movement between two active drive positions, one position beiow the bottom of the vessel and one position in a transverse channel in the bottom portion of the vessel, whereby the direction of the rotational axis of the propeller is coincident with the longitudinal direction of the channel.
  • the present invention relates to a propeller/nozzle assembly which can be situated in two active positions, a first active position pulled up/swung up in a downwardly open channel, and a second active position lowered/swung down below the bottom of the vessel. Both of these positions are active; i.e. that the propeller can work in both of these positions. In the pulled-up/swung-up position the assembly can also be used in shallow water, including to and from a quay or mooring site.
  • the propeller/nozzle assembly is adapted to be raised and lowered by pivoting the stem of the thruster up and down, respectively, about a horizontal axis, i.e. that the thruster is of a so-called "swing-up" type, whereby the propeller/nozzle assembly prior to the swinging up is pivoted about the stem axis in order that the propeller/nozzle axis be parallel to the channel axis.
  • the propeller/nozzle assembly is adapted to be raised and lowered by a translatory vertical movement, for instance when the stem is telescopical.
  • Figs. 1 and 3 diagrammaticaliy show a "swing-up" version and a vertically movable version, respectively, of a thruster for conventional use, having only a lower operative position.
  • Figs. 2 and 4 diagrammaticaliy show an embodiment of the invention in a "swing-up" version and a vertically movable version, respectively, the propeller/nozzle assembly being shown in the two operative positions.
  • a thruster in a "swing-up" version and a vertically movable version, respectively, comprising a propeller/nozzle assembly 1 mounted on a stem indicated by its center line 2.
  • the thruster is adapted to be pivoted and moved vertically, respectively, from a lower, operative position 0 N to an upper, not operative position S where the propeller/nozzle assembly is hidden in a recess R in the bottom portion of the vessel.
  • Fig. 2 shows diagrammaticaliy an embodiment of the invention in which a thruster of a "swing-up" version, i.e.
  • a thruster adapted to be pivoted about a horizontal axis A, has two operative positions, a lower operative position 0 below the bottom portion of the vessel and an upper operative position 0° in a downwardly open channel 3 in the bottom portion of the vessel.
  • the thruster By turning the propeller/nozzle assembly 1 , in the lower operative position, in such a manner that the propeller axis extends parallelly to the axis of the channel 3 the thruster will, when it reaches the upper operative position, mainly function in the same manner as a conventional tunnel thruster.
  • the thruster embodiment according to the invention it is, however, also possible to reverse the orientation of the propeller/nozzle assembly 1 in the upper operative position O 0 .
  • the propeller/nozzle assembly is oriented in accordance with the desired thrust direction.
  • Fig. 4 departs from that of Fig. 2 in that the thruster is of a so-called vertically movable version, while the functioning in other respects is identical, also as regards the orientation of the propeller/nozzle assembly in the upper operative position.
  • Tunnel thrusters of a conventional type have a propeller which works in a tunnel of circular cross section extending through the underwater portion of the vessel, along or transversely of the longitudinal direction of the vessel.
  • the propeller blades In order to achieve equal propeller action in both directions of the tunnel the propeller blades must be shaped with a symmetrical profile, i.e. without curved profile, whereby the action of the propeller is the same for both of the rotational directions. From the same reason it has not been possible to introduce a radial pitch distribution, which among else would have reduced the load on the propeller blade tips.
  • Such a propeller blade shape is in fact contradictory to prevailing circulation theories and well established aero- and hydrodynamical principles.
  • the propeller/nozzle assembly can be oriented in one direction or in the other direction prior to being brought into the channel, and the propeller blades may, consequently, be shaped with an optimal profile curvature and radial pitch distribution, respectively.

Landscapes

  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Power Steering Mechanism (AREA)
  • Nozzles (AREA)
  • Paper (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Controls For Constant Speed Travelling (AREA)
  • Manipulator (AREA)
  • Actuator (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Road Signs Or Road Markings (AREA)
  • Nonmetallic Welding Materials (AREA)
  • Catching Or Destruction (AREA)
  • Ship Loading And Unloading (AREA)

Abstract

A steering and/or propulsion device for a vessel, preferably for installation in the bow portion of the vessel, comprising a propeller nozzle assembly (1) adapted to be rotated 360° about its vertical axis (2). The propeller/nozzle assembly (1) is provided for two active drive positions, one position (ON) below the bottom of the vessel and one position (OO) in a preferably downwardly open channel (3) in the bottom portion of the vessel, whereby the direction of the rotational axis of the propeller is coincident with the axis direction or longitudinal direction of the channel. The propeller/nozzle assembly (1) can be reversed also in the upper operative position.

Description

Steering and/or propulsion device for a vessel.
The present invention relates to a steering and/or propulsion device for a vessel, preferably for installation in the bow portion of the vessel, comprising a propeller nozzle assembly adapted to be rotated 360° about its vertical axis. Drive power to the propeller and rotational force to the assembly are supplied from devices inside the vessel. The propeller may be of a fixed type or it may be a variable pitch propeller. Propeller/nozzle assemblies of this type are for instance disclosed in the Norwegian patent publication 136038. Such assemblies are commonly called "thrusters".
US 3517633 shows crossing channels in a hull, one channel i the longitudinal direction and one channel in the transverse direction. A propeller, which does not work inside a nozzle, has two active positions, one in each channel, but in the same height, whereby the propeller may work in the longitudinal as well as in the transverse direction of the vessel. A downward aperture is situated remote from the propeller, at the rearward exit from the longitudinal channel, for discharge of water for forward propulsion. The propeller is only to work in the two channels. The publication mentions as prior art a so-called "bow thruster", which works in a transverse channel in the vessel , a so-called "retractible thruster", which is lowered prior to use and which can be pulled up when not in use, and a so-called "steerable thruster", which works below the bottom of the vessel and which can be turned 360°.
US 4294186 shows a propeller which only has one active position, below the bottom of the vessel. The pull-up position is merely a "storing position". This is an assembly of the type "retractible thruster" mentioned above. The propeller can only work in the transverse direction of the vessel in the lowered position. The propeller cannot be turned in any of the positions. Therefore, the propeller must be symmetrical in order to be able to work in both of the rotational directions, i.e. in order to produce drive force in both of the transverse directions of the vessel. The propeller can only work in a single level, below the bottom of the vessel.
By the present invention a steering and/or propulsion device of the type mentioned introductorily has been provided, and is characterized in that the propeller/nozzle assembly is mounted for movement between two active drive positions, one position beiow the bottom of the vessel and one position in a transverse channel in the bottom portion of the vessel, whereby the direction of the rotational axis of the propeller is coincident with the longitudinal direction of the channel.
Thus, the present invention relates to a propeller/nozzle assembly which can be situated in two active positions, a first active position pulled up/swung up in a downwardly open channel, and a second active position lowered/swung down below the bottom of the vessel. Both of these positions are active; i.e. that the propeller can work in both of these positions. In the pulled-up/swung-up position the assembly can also be used in shallow water, including to and from a quay or mooring site.
In an embodiment of the invention the propeller/nozzle assembly is adapted to be raised and lowered by pivoting the stem of the thruster up and down, respectively, about a horizontal axis, i.e. that the thruster is of a so-called "swing-up" type, whereby the propeller/nozzle assembly prior to the swinging up is pivoted about the stem axis in order that the propeller/nozzle axis be parallel to the channel axis.
In another embodiment of the invention the propeller/nozzle assembly is adapted to be raised and lowered by a translatory vertical movement, for instance when the stem is telescopical.
The invention will be described more detailed with reference to the accompanying drawings.
Figs. 1 and 3 diagrammaticaliy show a "swing-up" version and a vertically movable version, respectively, of a thruster for conventional use, having only a lower operative position.
Figs. 2 and 4 diagrammaticaliy show an embodiment of the invention in a "swing-up" version and a vertically movable version, respectively, the propeller/nozzle assembly being shown in the two operative positions.
In the Figs. 1 and 3 is indicated a thruster in a "swing-up" version and a vertically movable version, respectively, comprising a propeller/nozzle assembly 1 mounted on a stem indicated by its center line 2. Here, the thruster is adapted to be pivoted and moved vertically, respectively, from a lower, operative position 0N to an upper, not operative position S where the propeller/nozzle assembly is hidden in a recess R in the bottom portion of the vessel. Fig. 2 shows diagrammaticaliy an embodiment of the invention in which a thruster of a "swing-up" version, i.e. a thruster adapted to be pivoted about a horizontal axis A, has two operative positions, a lower operative position 0 below the bottom portion of the vessel and an upper operative position 0° in a downwardly open channel 3 in the bottom portion of the vessel. By turning the propeller/nozzle assembly 1 , in the lower operative position, in such a manner that the propeller axis extends parallelly to the axis of the channel 3 the thruster will, when it reaches the upper operative position, mainly function in the same manner as a conventional tunnel thruster. With the thruster embodiment according to the invention it is, however, also possible to reverse the orientation of the propeller/nozzle assembly 1 in the upper operative position O0. Thus, the propeller/nozzle assembly is oriented in accordance with the desired thrust direction.
The embodiment shown in Fig. 4 departs from that of Fig. 2 in that the thruster is of a so-called vertically movable version, while the functioning in other respects is identical, also as regards the orientation of the propeller/nozzle assembly in the upper operative position.
Driving of the propeller, the turning of the propeller about the stem axis of the thruster and the pivoting, i.e. the vertical movement of the thruster, takes place in a known manner.
Tunnel thrusters of a conventional type have a propeller which works in a tunnel of circular cross section extending through the underwater portion of the vessel, along or transversely of the longitudinal direction of the vessel. In order to achieve equal propeller action in both directions of the tunnel the propeller blades must be shaped with a symmetrical profile, i.e. without curved profile, whereby the action of the propeller is the same for both of the rotational directions. From the same reason it has not been possible to introduce a radial pitch distribution, which among else would have reduced the load on the propeller blade tips. Such a propeller blade shape is in fact contradictory to prevailing circulation theories and well established aero- and hydrodynamical principles. The drawbacks of these known tunnel thruster embodiments are avoided by use of the present invention, in which the propeller/nozzle assembly can be oriented in one direction or in the other direction prior to being brought into the channel, and the propeller blades may, consequently, be shaped with an optimal profile curvature and radial pitch distribution, respectively.

Claims

Claims.
1. A steering and/or propulsion device for a vessel, preferably for installation in the bow portion of the vessel, comprising a propeller nozzle assembly (1) adapted to be rotated 360┬░ about its vertical axis (2), characterized in that the propeller/nozzle assembly (1) is mounted for movement between two active drive positions, one position (0N) below the bottom of the vessel and one position (0┬░) in a transverse channel (3) in the bottom portion of the vessel, whereby the direction of the rotational axis of the propeller is coincident with the longitudinal direction of the channel.
2. A device according to claim ^characterized in that the propeller/nozzle assembly (1) is adapted to be raised and lowered by being pivoted about a horizontal axis (A) in the bottom portion of the vessel.
3. A device according to claim ^characterized in that the propeller/nozzle assembly (1) is adapted to be raised and lowered by being moved vertically.
4. A device according to claim 3, characterized in that the propeller/nozzle assembly (1) is constructed with a telescopically movable stem (2).
5. A device according to the claims 1 -4, characterized in that the channel cross section is dimensioned in such a manner that the propeller/nozzle assembly (1) can be reversed in the channel (3).
PCT/NO1998/000007 1997-01-09 1998-01-09 Steering and/or propulsion device for a vessel WO1998030440A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AU55799/98A AU5579998A (en) 1997-01-09 1998-01-09 Steering and/or propulsion device for a vessel
SI9830168T SI0950005T1 (en) 1997-01-09 1998-01-09 Steering and/or propulsion device for a vessel
DK98900783T DK0950005T3 (en) 1997-01-09 1998-01-09 Steering and / or propulsion unit for a vessel
DE69805053T DE69805053T2 (en) 1997-01-09 1998-01-09 CONTROL AND / OR DRIVING DEVICE FOR A SHIP
AT98900783T ATE216673T1 (en) 1997-01-09 1998-01-09 STEERING AND/OR PROPULSION DEVICE FOR A SHIP
EP98900783A EP0950005B1 (en) 1997-01-09 1998-01-09 Steering and/or propulsion device for a vessel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO970075A NO305892B1 (en) 1997-01-09 1997-01-09 Steering and / or propulsion device for a vessel
NO970075 1997-01-09

Publications (1)

Publication Number Publication Date
WO1998030440A1 true WO1998030440A1 (en) 1998-07-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO1998/000007 WO1998030440A1 (en) 1997-01-09 1998-01-09 Steering and/or propulsion device for a vessel

Country Status (9)

Country Link
EP (1) EP0950005B1 (en)
AT (1) ATE216673T1 (en)
AU (1) AU5579998A (en)
DE (1) DE69805053T2 (en)
DK (1) DK0950005T3 (en)
ES (1) ES2178140T3 (en)
NO (1) NO305892B1 (en)
PT (1) PT950005E (en)
WO (1) WO1998030440A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2853620A1 (en) * 2003-04-09 2004-10-15 Max Power Retractable propulsion device for floating or submersible structure, has displacement unit for moving propulsion set between retracted and deployed positions in a uniform circular movement with respect to center of rotation
CN100345725C (en) * 2003-11-06 2007-10-31 上海交通大学 Side-pushable towboat having two right-angle drive propulsion system equipped on bow and stern
DE102012204827A1 (en) * 2012-03-26 2013-09-26 Markus Schilcher Drive unit for watercraft e.g. surfboard, has propeller shaft which is rotatable about propeller shaft axis that is skewed relative on drive shaft rotation axis and is pivoted about drive shaft rotation axis
KR101403648B1 (en) 2012-06-01 2014-06-05 삼성중공업 주식회사 Retractable Thruster For Offshore Structure
CN104648644A (en) * 2015-03-06 2015-05-27 管立树 Hull bottom supplemental steering device
EP2987719A1 (en) * 2014-08-22 2016-02-24 Rolls-Royce Marine AS A vessel comprising a propulsion unit
JP2016159824A (en) * 2015-03-04 2016-09-05 信吉 森元 Vessel with additional propeller

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK1885598T3 (en) 2005-06-02 2009-09-21 Waertsilae Ship Design Germany Auxiliary propulsion device for ships
WO2010092211A1 (en) * 2009-02-12 2010-08-19 Miquel Pasqual Cifre Marti Boat propulsion system
DE102010043680A1 (en) 2010-11-10 2012-05-10 Siemens Aktiengesellschaft Watercraft with a transverse jet drive
FI123443B (en) * 2011-08-19 2013-05-15 Aker Arctic Technology Oy Vessel operating in ice-covered waters
RU2585199C1 (en) * 2015-04-07 2016-05-27 Акционерное общество "Центр технологии судостроения и судоремонта" (АО "ЦТСС") Universal semisubmersible-large-capacity carrier ship for navigation in seas with ice and pure water
RU2667421C1 (en) * 2017-10-13 2018-09-19 Российская Федерация, От Имени Которой Выступает Министерство Промышленности И Торговли Российской Федерации Additional propulsion ship device combined with thrust unit
RU183225U1 (en) * 2017-12-06 2018-09-13 Евгений Васильевич Фальмонов Rear wheel vessel

Citations (4)

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Publication number Priority date Publication date Assignee Title
DE1136907B (en) * 1960-02-22 1962-09-20 Peter Jastram Steering screw assembly for watercraft
US3517633A (en) * 1968-09-10 1970-06-30 Mathewson Corp Bow thruster
US3550547A (en) * 1968-06-27 1970-12-29 Friedrich W Pleuger Auxiliary maneuvering means for ships
US5522335A (en) * 1995-01-30 1996-06-04 Westinghouse Electric Corporation Combined azimuthing and tunnel auxillary thruster powered by integral and canned electric motor and marine vessel powered thereby

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1136907B (en) * 1960-02-22 1962-09-20 Peter Jastram Steering screw assembly for watercraft
US3550547A (en) * 1968-06-27 1970-12-29 Friedrich W Pleuger Auxiliary maneuvering means for ships
US3517633A (en) * 1968-09-10 1970-06-30 Mathewson Corp Bow thruster
US5522335A (en) * 1995-01-30 1996-06-04 Westinghouse Electric Corporation Combined azimuthing and tunnel auxillary thruster powered by integral and canned electric motor and marine vessel powered thereby

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DERWENT'S ABSTRACT, No. J-3826D/36, week J36; & SU,A,669 781 (OVSYANNIKOV M S) 15 December 1980. *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004092007A1 (en) * 2003-04-09 2004-10-28 Max Power Rotationally retractable propeller
US7146921B2 (en) 2003-04-09 2006-12-12 Max Power Rotationally retractable propeller
FR2853620A1 (en) * 2003-04-09 2004-10-15 Max Power Retractable propulsion device for floating or submersible structure, has displacement unit for moving propulsion set between retracted and deployed positions in a uniform circular movement with respect to center of rotation
CN100345725C (en) * 2003-11-06 2007-10-31 上海交通大学 Side-pushable towboat having two right-angle drive propulsion system equipped on bow and stern
DE102012204827A1 (en) * 2012-03-26 2013-09-26 Markus Schilcher Drive unit for watercraft e.g. surfboard, has propeller shaft which is rotatable about propeller shaft axis that is skewed relative on drive shaft rotation axis and is pivoted about drive shaft rotation axis
KR101403648B1 (en) 2012-06-01 2014-06-05 삼성중공업 주식회사 Retractable Thruster For Offshore Structure
CN106715260A (en) * 2014-08-22 2017-05-24 劳斯莱斯船舶股份有限公司 A vessel comprising a propulsion unit
JP2017525613A (en) * 2014-08-22 2017-09-07 ロールスロイス マリン アクティーゼルスカブ Ship with propulsion device
EP2987719A1 (en) * 2014-08-22 2016-02-24 Rolls-Royce Marine AS A vessel comprising a propulsion unit
WO2016026962A1 (en) * 2014-08-22 2016-02-25 Rolls-Royce Marine As A vessel comprising a propulsion unit
JP2016159824A (en) * 2015-03-04 2016-09-05 信吉 森元 Vessel with additional propeller
EP3266701A4 (en) * 2015-03-04 2018-11-14 Nobuyoshi Morimoto Boat equipped with additional propeller
CN104648644A (en) * 2015-03-06 2015-05-27 管立树 Hull bottom supplemental steering device

Also Published As

Publication number Publication date
ES2178140T3 (en) 2002-12-16
EP0950005B1 (en) 2002-04-24
PT950005E (en) 2002-10-31
DK0950005T3 (en) 2002-07-29
ATE216673T1 (en) 2002-05-15
NO305892B1 (en) 1999-08-16
NO970075L (en) 1998-07-10
DE69805053T2 (en) 2002-11-07
EP0950005A1 (en) 1999-10-20
DE69805053D1 (en) 2002-05-29
NO970075D0 (en) 1997-01-09
AU5579998A (en) 1998-08-03

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