EP3112253A1 - Verfahren zum wegmanövrieren eines kleineren schiffes von einem grösseren schiff - Google Patents

Verfahren zum wegmanövrieren eines kleineren schiffes von einem grösseren schiff Download PDF

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Publication number
EP3112253A1
EP3112253A1 EP15174233.5A EP15174233A EP3112253A1 EP 3112253 A1 EP3112253 A1 EP 3112253A1 EP 15174233 A EP15174233 A EP 15174233A EP 3112253 A1 EP3112253 A1 EP 3112253A1
Authority
EP
European Patent Office
Prior art keywords
ship
bow
smaller
larger
magnus rotor
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.)
Withdrawn
Application number
EP15174233.5A
Other languages
English (en)
French (fr)
Inventor
Jan Alexander Keuning
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Technische Universiteit Delft
Original Assignee
Technische Universiteit Delft
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 Technische Universiteit Delft filed Critical Technische Universiteit Delft
Priority to EP15174233.5A priority Critical patent/EP3112253A1/de
Publication of EP3112253A1 publication Critical patent/EP3112253A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B63H25/06—Steering by rudders
    • B63H25/38—Rudders
    • B63H25/40—Rudders using Magnus effect
    • 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
    • B63B35/66—Tugs
    • B63B35/70—Tugs for pushing

Definitions

  • the present invention relates to a method of maneuvering a smaller ship away from a larger ship, wherein initially the smaller ship is located alongside and against a larger ship and both ships have the same course and the same speed.
  • Such a method of maneuvering is typically performed in case of a pilot vessel which sails alongside a sea-going ship in order to board a pilot.
  • the pilot vessel is much smaller than the ship to serve and has, generally, high maneuvering capabilities and a high maximum speed in order to quickly serve many sea-going vessels one after the other.
  • the pilot vessel may have propulsion concepts as twin screws, water jets and steerable propulsion.
  • the pilot vessel is maneuvered alongside and in most cases with its bow or midsection against the sea-going vessel so that a pilot can board or disembark the sea-going vessel. During this boarding or disembarking both ships have the same speed and move in the same direction. After boarding or disembarking the pilot the pilot vessel proceeds to a next vessel.
  • a first known embodiment of the method for moving the pilot vessel away from the sea-going vessel often requires that the pilot vessel diminishes its speed until it is free from the sea-going vessel. This speed reduction takes time and diminishes the effective use of the pilot vessel.
  • the pilot vessel has amidships a large fender between the pilot vessel and the sea-going vessel and when sailing away from the sea-going vessel the pilot vessel rotates around this fender with its stern to the sea-going vessel. This might lead to collision of the stern of the pilot vessel with the side of the sea-going vessel, which is undesirable.
  • the present invention provides a method of maneuvering the smaller ship away from the larger ship by means of changing the orientation of a bow rudder of the smaller ship or activating a Magnus rotor at the bow of the smaller ship.
  • the method according to the invention overcomes the earlier described disadvantages and appears to be highly effective to maneuver the smaller ship easily away from the larger ship.
  • Magnus rotor In case of the presence of a Magnus rotor at the bow of the smaller ship, a lateral force on the front side of the smaller ship is created by activating it.
  • An advantage of applying a Magnus rotor is that its size does not increase upon activating it.
  • the Magnus rotor may be located within the circumference of the hull of the smaller ship as seen from above and may remain there upon activating it. This minimizes the risk of hitting the larger ship or any other obstacle during maneuvering.
  • the length of the larger ship may be more than three times larger than the length of the smaller ship. This is typically a condition in which conventional methods of maneuvering the smaller ship away from the larger ship is difficult.
  • the smaller ship may comprise a pilot vessel and the larger ship may comprise a sea-going vessel, which transports passengers or load between sea harbours.
  • the bow rudder or the Magnus rotor may project or is projectable below the bow of the smaller ship in order to make the bow rudder or Magnus rotor more effective.
  • the bow rudder or the Magnus rotor is movable with respect to the bow in vertical direction, since this minimizes the risk of a collision in shallow water or getting stuck in a fishnet or the like.
  • the bow rudder or the Magnus rotor may be movable with respect to the bow in vertical direction from below the bow into the bow and vice versa.
  • the Magnus rotor may be moved downwardly along its longitudinal axis upon activating it and moved upwardly after the smaller vessel has left the larger vessel. Alternatively, it may be moved downwardly and upwardly by means of linkage bars. During maneuvering the smaller ship away from the larger ship the rudder or the Magnus rotor can extend below the bow of the smaller ship.
  • the smaller ship may have a substantially vertical bow. This facilitates placing of a bow rudder or a Magnus rotor and reduces the vertical movement of the bow in heavier seas and ensures that the rudder or Magnus rotor remains immersed and remains effective.
  • Fig. 1 shows two ships as seen from above.
  • a smaller ship 1 is a pilot vessel and a larger ship 2 is a sea-going vessel, for example a freight carrier.
  • the dimensions of the larger ship 2 are much larger than of the smaller ship 1.
  • the first vessel 1 is located alongside the larger ship 2 and both ships have the same sailing direction and the same sailing speed.
  • a pilot may move between the smaller ship 1 and the larger ship 2.
  • the period of time during which the smaller ship 1 is located alongside the larger ship 2 is as short as possible.
  • the smaller ship 1 leaves the larger ship 2.
  • Fig. 1 shows an initial situation in which both ships have the same course and the same speed.
  • the smaller ship 1 includes a bow rudder 3.
  • the orientation of the bow rudder 3 can be changed so as to maneuver away from the larger ship 2. This is illustrated in Fig. 2 .
  • the bow rudder 3 may have numerous shapes and dimensions.
  • European patent EP 2 040 978 shows several examples.
  • the new orientation of the bow rudder 3 causes a lateral force of the water onto the bow rudder 3 near the bow of the smaller ship 1 in a direction away from the larger ship 2 without first pushing the rear of the smaller ship 1 towards the larger ship 2.
  • the effect is illustrated in Fig. 3 .
  • An advantage of controlling the bow rudder 3 in this situation is that at first a front side of the smaller ship 1 leaves the larger ship 2 after which the back side thereof follows. In conventional cases, upon using aft rudders it takes much more time to get the front side of the smaller ship 1 separated from the larger ship 2 or there is the risk that the rear side of the smaller ship 1 collides with the larger ship 2.
  • Fig. 4 illustrates an alternative embodiment of the method according to the invention.
  • Fig. 4 shows a foreship 4 of the smaller ship 1.
  • the foreship 4 has a bow 5 where a Magnus rotor 6 is installed.
  • the Magnus rotor 4 is activated, resulting in a lateral force in a similar way as with the bow rudder 3 as illustrated in Figs. 1-3 .
  • Fig. 4 further shows that in this embodiment the bow 5 of the smaller ship 1 extends substantially vertically and the Magnus rotor 4 is mounted in the bow 5.
  • Fig. 5 shows the foreship 4 of an alternative embodiment of the smaller ship 1.
  • the Magnus rotor 6 is extendable downwards with respect to the bow 5 as illustrated by a double-headed arrow in Fig. 5 .
  • the Magnus rotor 6 is moved downwardly along its longitudinal axis.
  • the Magnus rotor 6 is retracted upwardly.
  • the rudder or the Magnus rotor can be moved from a compartment in the hull of the ship behind the bow 5 to under or below the foreship 4 and the rudder or Magnus is activated when it is below the foreship 4.
  • the invention provides an improved method for maneuvering the smaller ship away from the larger ship.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Catching Or Destruction (AREA)
EP15174233.5A 2015-06-29 2015-06-29 Verfahren zum wegmanövrieren eines kleineren schiffes von einem grösseren schiff Withdrawn EP3112253A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15174233.5A EP3112253A1 (de) 2015-06-29 2015-06-29 Verfahren zum wegmanövrieren eines kleineren schiffes von einem grösseren schiff

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15174233.5A EP3112253A1 (de) 2015-06-29 2015-06-29 Verfahren zum wegmanövrieren eines kleineren schiffes von einem grösseren schiff

Publications (1)

Publication Number Publication Date
EP3112253A1 true EP3112253A1 (de) 2017-01-04

Family

ID=53513991

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15174233.5A Withdrawn EP3112253A1 (de) 2015-06-29 2015-06-29 Verfahren zum wegmanövrieren eines kleineren schiffes von einem grösseren schiff

Country Status (1)

Country Link
EP (1) EP3112253A1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1170297A (en) * 1967-02-07 1969-11-12 Hydroconic Ltd Improvements in or relating to Steering Systems for Marine Vessels
DE3815792A1 (de) * 1988-05-09 1990-01-04 Schueler Joerg Rotor-querruder fuer schiffe
DE10225128A1 (de) * 2002-06-06 2003-12-18 Ullrich Meyer Senkruder am Bug
EP1873055A1 (de) * 2006-06-30 2008-01-02 Technische Universiteit Delft Schiff mit Bugkontrollfläche

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1170297A (en) * 1967-02-07 1969-11-12 Hydroconic Ltd Improvements in or relating to Steering Systems for Marine Vessels
DE3815792A1 (de) * 1988-05-09 1990-01-04 Schueler Joerg Rotor-querruder fuer schiffe
DE10225128A1 (de) * 2002-06-06 2003-12-18 Ullrich Meyer Senkruder am Bug
EP1873055A1 (de) * 2006-06-30 2008-01-02 Technische Universiteit Delft Schiff mit Bugkontrollfläche
EP2040978A1 (de) 2006-06-30 2009-04-01 Technische Universiteit Delft Schiff mit bugsteuerfläche

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