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EP0935552B1 - Navire multicoques - Google Patents

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Publication number
EP0935552B1
EP0935552B1 EP97912578A EP97912578A EP0935552B1 EP 0935552 B1 EP0935552 B1 EP 0935552B1 EP 97912578 A EP97912578 A EP 97912578A EP 97912578 A EP97912578 A EP 97912578A EP 0935552 B1 EP0935552 B1 EP 0935552B1
Authority
EP
European Patent Office
Prior art keywords
vessel
hulls
deck
vessels
arrangement
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.)
Expired - Lifetime
Application number
EP97912578A
Other languages
German (de)
English (en)
Other versions
EP0935552A1 (fr
Inventor
Per I. Hagen
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.)
Cob Line International AS
Original Assignee
Cob Line International 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 Cob Line International AS filed Critical Cob Line International AS
Publication of EP0935552A1 publication Critical patent/EP0935552A1/fr
Application granted granted Critical
Publication of EP0935552B1 publication Critical patent/EP0935552B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B63B35/003—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for for transporting very large loads, e.g. offshore structure modules
    • 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
    • B63B1/121—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly comprising two hulls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C7/00—Salvaging of disabled, stranded, or sunken vessels; Salvaging of vessel parts or furnishings, e.g. of safes; Salvaging of other underwater objects
    • B63C7/02—Salvaging of disabled, stranded, or sunken vessels; Salvaging of vessel parts or furnishings, e.g. of safes; Salvaging of other underwater objects in which the lifting is done by hauling

Definitions

  • the invention is a multihull vessel of the type in which the hulls are united to form a mono hull forward and in which a combined bottom and deck arrangement are binding together and are covering the area between the hulls from where the hulls are connected together and aftwards.
  • the vessel according to the invention is preferably designed for transport, lifting and submerging of heavy goods from sea surface or the vessel down to great sea depths. Further the vessel is intended for lifting/rescuing of heavy constructions from seabed and up to sea surface and/or onboard the vessel and securing the same for further transportation in the vessel.
  • the vessel can further be used for removing of for example offshore installations in the North Sea and other Ocean areas.
  • the vessel can also be used for rescue operations in connections with accidents and or total loss.
  • the vessel itself according to the described invention is based on well known technology as a vessel of catamaran type with two connected hulls in which the connection has been made in the forward part of the vessel. Between the hulls it is known to have a fixed bottom/deck arrangement which binds the decks together and covers the area between the hulls.
  • the multihull vessel according to the invention has a flexible/turnable bottom construction.
  • a turnable stabilizing device for a marine construction is described in NO-A-891017.
  • This publication concerns a stabilizing device for a semi-submersible marine design.
  • the stabilizing device according to this publication is used primarily in order to increase the marine designs stability.
  • the turnable stabilizing device has according to the publication also another task and are used on one type of marine designs which should not be directly compared with the multihull vessel according to subject invention.
  • NO 173.052 concerns a multihull vessel in which an opening in the transverse deck is arranged.
  • the flaps are turnably arranged, and are controlled by means of hydraulic cylinders.
  • the conveyor is partly height-and lowerably mounted in the vessel. It is at it's upper end tumably mounted around an axis, transversally of the vessels longitudinal direction and substantially horizontal.
  • the multihull vessel according the invention when in deballasted condition, it will achieve a transit speed of about 20 knots, which is unique for a heavy lift vessel. Also with cargo the multihull vessel will have superior speed performance compared with designs of today. The multihull vessel according to the invention will further be able to lift/lower down heavier objects than what is possible today, and this operation will be carried out in a condition which the vessel has very good stability due to the multihull design and the special bottom construction.
  • the multihull vessel is identified in the way the combined bottom- and deck arrangement are linked together in the forward part of the vessel by a transversal axis arranged with a bearing in both mentioned hulls of which the bottom/deck arrangement can be lowered down at the vessel's aft part and be turned via the hinged construction towards the vessel's bottom area.
  • the multihull vessel 1 shown consisting of a first hull 2 and a second hull 3. Between the hulls is shown a combined bottom-and deck structure 4 (hereinafter called bottom) which are covering the area between the two hulls 2,3 from the unified mentioned hull and aftwards to the vessel's stern 5.
  • the bottom 4 is in the forward part connected to the hulls 2, 3 by a turnable hinged arrangement 6.
  • the hinged arrangement 6 is supported in both hulls 2, 3.
  • the bottom 4 can in this way be turned down in to water below the vessel 1 around the mentioned transversal hinged arrangement 6.
  • the bottom 4 can further be filled by ballast water and manoeuvred below the vessel 1 and forward 180 degrees, such that the area between both hulls 2,3 will be opened and reachable for example for lifting operations.
  • the bottom 4 is further arranged with two tunnel-propellers (thrusters) for manoeuvring of the bottom under water (in submerged condition).
  • the vessel 1 is further outfitted with crane arrangements 10 which is mounted on both sides of the hulls 2, 3. With reference to fig. 1,2 and 3 the vessel 1 is shown in operational service condition with closed bottom 4, in fig 4 the area between the hulls 2, 3 aft of the joints is open, such that the bottom 4 points 180 degrees forward.
  • the vessel 1 will achieve a very good stability and it will further be achieved a sheltered working area between the hulls 2, 3 for possible lifting operations.
  • the object which is lifted from sea bed will be brought in position between both hulls 2, 3, where the bottom 4 then is located in 90-180 degree position downwards/forward, comp. fig. 4.
  • the bottom is turned (manoeuvred) 4 back to and below the object, such that the bottom 4 at deballasting increases the buoyancy and secures the objective when this is breaking the sea surface in which the gravity will increase considerably.
  • Deballasting of the bottom 4 will be an important contribution in respect of the vessel's lifting capacity in this critical operational phase.
  • the vessel can as earlier mentioned be utilised to remove for example offshore-installations in the North Sea and other ocean areas.
  • This operation can consist of preparation of removing of installations, cutting up of steel constructions for preparation for lifting, and lifting of installations into the vessel.
  • Installations can be dismantled into parts, and the parts placed in the catamaran hulls 2, 3, and/or the parts to be placed on the bottom 4 for direct transport to the depot.
  • Heavy lifts will besides the force from the lifting crane 10, be executed by utilising the buoyancy force which is made free due to the bottom 4 has been deballasted. This is giving extra force in the last phase of the lift, which are crucial in respect of loss of buoyancy, in the moment when the objective are breaking the surface.
  • the ballasting/deballasting of the catamaran hulls 2, 3 as such will be used in parallel to increase the lifting capacity further.
  • An example of a service area for the vessel is positioning of modules/heavy equipment on the sea bed, together with removing same type of equipment.
  • the vessel In deballasted condition the vessel will according to the invention be able to achieve a speed which considerably exceeds the speed of crane vessels of to day. This means that the vessel can be transferred quickly to an emergency spot if so desired, and in this way have a great competing advantage compared with lifting vessels of today. Also in loaded condition the vessel will have a great speed advantage compared with competing vessels, because these competing vessels (mainly heavy lift crane vessels) are dependant of barges to transport the installations into positioned site.
  • Another area the vessel can be utilised for is assistance for, stand-by and rescue operations.
  • the vessel will on these areas be superior in comparison to vessels in operation today due to the invention with better performance in respect of bollard pull and transit speed in comparison to existing vessels, which means that the emergency target can be reached quicker.
  • Accommodation facilities and landing deck 11 for helicopters with twinrotors will make the present vessel especially well suited for extensive and complicated rescue operations.
  • the vessel according to the invention will be classified with the highest ice class, which means that the vessel can be operated in arctic areas.

Landscapes

  • Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Transportation (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Jib Cranes (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Claims (2)

  1. Navire multicoque (1) du type pour lequel les coques (2, 3) sont réunies dans la partie avant du navire et où une structure (4) combine le fond et le pont qui sont réunis et qui couvre la surface du pont entre les coques (2, 3) à partir de l'endroit où elles sont réunies et vers l'arrière, caractérisé en ce que la structure (4) qui combine le fond et le pont est articulée dans la partie avant du navire au moyen d'un dispositif articulé (6) transversal, de telle sorte que la structure (4) qui combine le fond et le pont puisse être abaissée à l'arrière du navire et puisse être tournée autour du dispositif articulé (6) d'un angle pouvant atteindre 180 degrés.
  2. Navire multicoque (1) selon la revendication 1, caractérisé en ce que la structure (4) qui combine le fond et le pont est pourvue le long de ses bords latéraux d'un nombre suffisant de points d'attache pour accueillir des verrous de fermeture (8) hydrauliques montés dans les coques (2, 3) respectives, et pour lequel la structure (4) qui combine le fond et le pont est ancrée à la coque (2, 3) lorsque les verrous de fermeture (8) hydrauliques sont activés.
EP97912578A 1996-11-05 1997-10-31 Navire multicoques Expired - Lifetime EP0935552B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO964680 1996-11-05
NO964680A NO964680A (no) 1996-11-05 1996-11-05 Flerskrogsfartøy
PCT/NO1997/000287 WO1998019905A1 (fr) 1996-11-05 1997-10-31 Navire multicoques

Publications (2)

Publication Number Publication Date
EP0935552A1 EP0935552A1 (fr) 1999-08-18
EP0935552B1 true EP0935552B1 (fr) 2002-03-20

Family

ID=19900006

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97912578A Expired - Lifetime EP0935552B1 (fr) 1996-11-05 1997-10-31 Navire multicoques

Country Status (6)

Country Link
EP (1) EP0935552B1 (fr)
AT (1) ATE214675T1 (fr)
AU (1) AU4970897A (fr)
DE (1) DE69711205D1 (fr)
NO (1) NO964680A (fr)
WO (1) WO1998019905A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BRPI0805765A2 (pt) * 2008-08-22 2010-08-24 Batalha Alexandre Goes embarcaÇço de apoio para atividades offshore
NO345458B1 (en) * 2018-12-14 2021-02-08 Hellesoee Bernt Henrik A shipwreck salvaging floating service base and a method of salvaging a shipwreck

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE215199C (fr) *
FR646868A (fr) * 1928-01-07 1928-11-16 Procédé et dispositif de sauvetage des submersibles coulés
US2561926A (en) * 1948-01-24 1951-07-24 Truman K Jamison Salvage vessel

Also Published As

Publication number Publication date
ATE214675T1 (de) 2002-04-15
AU4970897A (en) 1998-05-29
DE69711205D1 (de) 2002-04-25
NO301703B1 (no) 1997-12-01
NO964680D0 (no) 1996-11-05
NO964680A (no) 1997-12-01
WO1998019905A1 (fr) 1998-05-14
EP0935552A1 (fr) 1999-08-18

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