EP1140616A1 - Semi-immersible heavy-lift cargoboat - Google Patents

Semi-immersible heavy-lift cargoboat

Info

Publication number
EP1140616A1
EP1140616A1 EP99964416A EP99964416A EP1140616A1 EP 1140616 A1 EP1140616 A1 EP 1140616A1 EP 99964416 A EP99964416 A EP 99964416A EP 99964416 A EP99964416 A EP 99964416A EP 1140616 A1 EP1140616 A1 EP 1140616A1
Authority
EP
European Patent Office
Prior art keywords
semi
submersible heavy
freighter
heavy lift
cargo
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.)
Granted
Application number
EP99964416A
Other languages
German (de)
French (fr)
Other versions
EP1140616B1 (en
Inventor
Peter Andersen
Hans Van Mameren
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP1140616A1 publication Critical patent/EP1140616A1/en
Application granted granted Critical
Publication of EP1140616B1 publication Critical patent/EP1140616B1/en
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
    • 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
    • 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
    • B63B1/04—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull
    • 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
    • B63B27/36—Arrangement of ship-based loading or unloading equipment for floating cargo
    • 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 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/40—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for for transporting marine vessels
    • B63B35/42—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for for transporting marine vessels with adjustable draught
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B43/00—Improving safety of vessels, e.g. damage control, not otherwise provided for
    • B63B43/02—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking
    • B63B43/04—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability
    • B63B43/06—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability using ballast tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
    • B63H21/14—Use of propulsion power plant or units on vessels the vessels being motor-driven relating to internal-combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/22—Transmitting power from propulsion power plant to propulsive elements with non-mechanical gearing
    • B63H23/24—Transmitting power from propulsion power plant to propulsive elements with non-mechanical gearing electric
    • 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
    • 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
    • B63B1/04—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull
    • B63B2001/044—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull with a small waterline area compared to total displacement, e.g. of semi-submersible type
    • 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
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B2035/442—Spar-type semi-submersible structures, i.e. shaped as single slender, e.g. substantially cylindrical or trussed vertical bodies
    • 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
    • B63H2005/1254—Podded azimuthing thrusters, i.e. podded thruster units arranged inboard for rotation about vertical axis
    • B63H2005/1258—Podded azimuthing thrusters, i.e. podded thruster units arranged inboard for rotation about vertical axis with electric power transmission to propellers, i.e. with integrated electric propeller motors

Definitions

  • the invention relates to a semi-submersible heavy lift.
  • cargo ships are mainly used for the transport of large and heavy piece goods and are characterized by a load capacity of far more than 10,000 t.
  • semi-submersible heavy cargo freighters are particularly suitable for the transport of bulky goods, such as complete drilling platforms, harbor crane systems or medium to large watercraft or parts thereof.
  • semi-submersible heavy cargo freighters usually consist of a front part, in which the propulsion system and the command and crew rooms are located, and a rear part, which is essentially a hollow-walled ballast tank
  • Float is formed with a flat transport platform.
  • ballast tanks By flooding the ballast tanks, it is possible to immerse the semi-submersible heavy cargo freighter so far that the transport platform is lowered below the swimming water line in order to pick up or deliver cargo that is floatable or, for example, stored on a pontoon. Conversely, by draining the ballast tanks, it is possible for the transport platform to rise under the freight to be transported in order to dock it.
  • the loading and unloading of cargo can also be carried out using the so-called roll-on / roll-off method, in which the transport platform of the semi-submersible heavy lift carrier is raised or lowered to the level of the quay . It is known to provide cargo ships with an electric ship propulsion system.
  • diesel-electric systems the electric propeller motor is usually fed by generators which are driven by diesel engines and / or gas turbines.
  • a diesel-electric drive requires higher investment costs compared to diesel engines directly coupled to the ship's propeller, but offers the advantage of more efficient use and enables a high torque on the propeller shaft even under very high load conditions. With diesel-electric drives there is also no risk of inadequate machine control if the propeller comes out of the water, for example in rough seas.
  • the invention has for its object to provide a semi-submersible heavy lift, which has high fuel efficiency and is characterized by good maneuverability.
  • the solution to this problem consists in a semi-submersible heavy cargo freighter with floodable and drainable bottom and side tanks for loading and unloading cargo according to the float-on / float-off and / or roll-on / roll-off method and a diesel-electric one Drive system which has diesel engines as main machines which drive at least one azimuth rudder propeller, a transverse thrust device being provided in the foredeck to improve maneuverability, and the equilibrium position being brought in by introducing water ballast is trimmable in upper and lower tanks with respect to the cargo.
  • a semi-submersible heavy lift freighter designed in this way has lower fuel consumption than known ships of this type and is particularly easy to maneuver.
  • the reason for this is, on the one hand, the use of an azimuth rudder propeller, which, in addition to particularly good maneuverability, also enables better ship resistance. This allows a more precise driving behavior, especially when loading and unloading, and therefore makes the help of tractors largely unnecessary.
  • good ship stability due to the trimmable equilibrium position and the transversal thrust device in the bow contribute to good maneuverability.
  • the azimuth rudder propellers are driven by a diesel-electric drive system, which ensures high fuel efficiency.
  • diesel-electric propulsion system in the foredeck, so that an optimized utilization of the ship's premises results with regard to the suitability of the heavy cargo carrier for transportation.
  • the arrangement of the essential parts of the system in the foredeck guarantees the greatest possible variability for loading and unloading cargo on the transport platform in the aft ship, which is not subject to structural restrictions in this way.
  • the azimuth rudder propeller is designed as an azimuth rudder double propeller. Double propellers are associated with higher acquisition and maintenance costs in comparison to screw-in devices, but the provision of two propellers enables the propeller diameter to be chosen smaller, with the result that the semi-submersible heavy cargo ship can be designed with a lower draft, which results in a lower cost.
  • the transverse thrust device is also electrically driven in order to contribute to a fuel-efficient and cost-effective configuration of the heavy cargo carrier.
  • the transversal thruster in the foredeck can be controlled from a central navigation console in the wheelhouse and from two bridge side wings of the semi-submersible heavy cargo ship in order to ensure the greatest possible clarity when maneuvering.
  • the flooding and draining of the bottom and side tanks can be controlled from a control desk on the aft side of the wheelhouse.
  • the switch and signal boards of the semi-submersible heavy goods carrier are expediently housed in a fully insulated machine control room in order to dampen the sound level emanating from the ship's machines.
  • the diesel engines can be operated with heavy oil which has a viscosity of approximately 3,500 s redwood.
  • Low operating costs also contribute if according to another advantageous Further development of the invention as auxiliary machines diesel engines are provided which can be operated with marine diesel oil.
  • the auxiliary machines are advantageously set up on a vibration-damped foundation so that the lowest possible noise level develops.
  • the exhaust line of the drive system is arranged to be movable in order to ensure the greatest possible variability with regard to a sound-conducting line.
  • the invention further proposes that loading gear, preferably hydraulically operated ship cranes, be arranged on the foredeck so that the conventional lift-on / lift-off method can also be used for loading and unloading.
  • two windlasses with an anchor chain be arranged on the fore ship and one windlass with an anchor rope on the aft ship in order to ensure reliable three-point mooring.
  • FIG. 1 shows a side view of a semi-submersible heavy cargo ship
  • 2 shows a plan view of the semi-submersible heavy cargo freighter according to FIG. 1
  • FIG. 3 shows a side view of an azimuth rudder double propeller.
  • the semi-submersible heavy lift freighter shown in FIGS. 1 and 2 has a total length of 156 m.
  • the length between the plumb bobs is 145 m.
  • the cargo deck has a free transport area of approx.4,065 m 2 .
  • the side height in the area of the cargo deck is 10 m, during the draft of the semi-submersible heavy cargo freighter is 7.50 m on the construction freeboard and 19.0 m on the lowered cargo deck.
  • the semi-submersible heavy lift freighter has a dead weight of 18,000 t on construction freeboard. This is made up of 2,000 t of heavy oil (HFO 380) serving as fuel for the main engines, 172 t of marine diesel oil serving as fuel for the auxiliary engines, for which a loading capacity of approx. 200 m 3 is available, 300 t of fresh water, for which there is a loading capacity of 300 m 3 , 25 t of lubricating oil, 20 t of supplies for the crew, 20 t of spare parts and 15,463 t of payload.
  • the average design depth for this dead weight in sea water with a specific density of 1,025 t / m 3 is approximately 7.5 m. This corresponds to the draft of the freeboard.
  • the semi-submersible heavy lift also has a loading capacity of approx. 40 m 3 for dirty oil and approx. 5 m 3 for waste water.
  • Accommodation for 22 crew members and 16 passengers is provided on the foredeck above the foredeck.
  • the diesel engines designed as 9-cylinder in-line engines can produce an electrical output of approx. 3,645 kW each. With electrical losses of approx. 8.7% from the generator to the drive and without supplying the on-board system can thus provide an output of 8,675 kW.
  • the semi-submersible heavy lift is also equipped with two auxiliary machines designed as diesel engines for the power generation of the on-board system, which deliver a generator output of 720 kW at a speed of 720/900 min "1.
  • a third diesel generator is provided for stays in port and emergencies , which has a speed of
  • a variety of winches are available to secure the cargo on the cargo deck. Soundproofing measures, such as the spatial separation of machine rooms and accommodations, noise encapsulation of the accommodations on the foredeck or soundproofing for the main engines, ensure ergonomic working conditions.
  • the semi-submersible heavy lift can be lifted from the lowered draft of 18 m to a draft of 7.50 within 4 hours by pumping the ballast tanks empty using compressed air. Due to the low consumption of the main engines of 46.98 mT / 24hr, the semi-submersible heavy cargo freighter, which can also be a dock ship depending on the application, can travel 34.6 days longer than comparable conventional vehicles for a period of 360 days Ships. This means that additional freight can be transported at the same operating costs.
  • the high fuel efficiency is also due to the fact that, depending on requirements, only one or two diesel engines of the main engines are running. Last but not least, ecological aspects are taken into account.

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  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Jib Cranes (AREA)
  • Ship Loading And Unloading (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Cleaning Or Clearing Of The Surface Of Open Water (AREA)
  • Toys (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Motor Or Generator Frames (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

The invention relates to a semi-immersible heavy-lift cargoboat with floodable and freeable bottom and side tanks for loading and unloading cargo according to the float-on/float-off and/or roll-on/roll-off method. Said cargoboat also comprises a diesel-electric driving arrangement. Said heavy-lift cargoboat is provided with diesel engines being the main engines. Said diesel engines drive at least one azimuth rudder propeller. A lateral thrust installation is provided in the forebody in order to improve manoeuvrability. The trimmed attitude can be trimmed in relation to the cargo by placing water ballasting in the upper and lower tanks.

Description

Beschreibungdescription
Halbeintauchbarer SchwergutfrachterSemi-submersible heavy lift
Die Erfindung betrifft einen halbeintauchbaren Schwergutfrachter. Derartige Frachtschiffe werden vor allem zum Transport von großen und schweren Stückgütern eingesetzt und zeichnen sich durch eine Tragfähigkeit von weitaus mehr als 10.000 t aus. Im Unterschied zu konventionellen Frachtschif- fen, bei denen die Frachtgüter mit Kranen be- und entladen werden und denen daher Grenzen hinsichtlich der Abmessungen der zu befördernden Fracht gesetzt sind, eignen sich halbein- tauchbare Schwergutfrachter in besonderem Maße zum Transport von sperrigen Gütern, wie beispielsweise komplette Bohrplatt- formen, Hafenkrananlagen oder mittlere bis große Wasserfahrzeuge oder Teile davon. Zu diesem Zweck bestehen halbein- tauchbare Schwergutfrachter gewöhnlich aus einem vorderen Teil, in dem sich die Antriebsanlage sowie die Kommando- und Besätzungsräume befinden, und einem hinteren Teil, der im e- sentlichen als hohlwandiger, Ballasttanks aufweisenderThe invention relates to a semi-submersible heavy lift. Such cargo ships are mainly used for the transport of large and heavy piece goods and are characterized by a load capacity of far more than 10,000 t. In contrast to conventional cargo ships, in which the cargo is loaded and unloaded with cranes and therefore there are limits to the dimensions of the cargo to be transported, semi-submersible heavy cargo freighters are particularly suitable for the transport of bulky goods, such as complete drilling platforms, harbor crane systems or medium to large watercraft or parts thereof. For this purpose, semi-submersible heavy cargo freighters usually consist of a front part, in which the propulsion system and the command and crew rooms are located, and a rear part, which is essentially a hollow-walled ballast tank
Schwimmkörper mit einer ebenen Transportplattform ausgebildet ist.Float is formed with a flat transport platform.
Durch Fluten der Ballasttanks ist es möglich, den halbein- tauchbaren Schwergutfrachter so weit einzutauchen, daß die Transportplattform unter die Schwimmwasserlinie abgesenkt wird, um schwimmfähiges oder beispielsweise auf einem Ponton gelagertes Frachtgut aufzunehmen oder abzugeben. Umgekehrt ist es durch Lenzen der Ballasttanks möglich, daß sich die Transportplattform unter das zu befördernde Frachtgut hebt, um dieses einzudocken. Neben dieser float-on/float-off-Methode kann das Be- und Entladen von Frachtgut auch mit der sogenannten roll-on/roll-off-Methode erfolgen, indem die Transportplattform des halbeintauchbaren Schwergutfrachters auf die Höhe des Hafenkais angehoben bzw. abgesenkt wird. Es ist bekannt, Frachtschiffe mit einem elektrischen Schiffsantrieb zu versehen. Bei dieselelektrischen Anlagen wird der elektrische Propellermotor üblicherweise von Generatoren gespeist, die durch Dieselmotoren und/oder Gasturbinen ange- trieben werden. Ein dieselelektrischer Antrieb erfordert zwar im Vergleich zu direkt mit dem Schiffspropeller gekuppelten Dieselmotoren höhere Investitionskosten, bietet aber den Vorteil einer effizienteren Nutzung und ermöglicht ein hohes Drehmoment an der Propellerwelle auch unter sehr hohen Last- bedingungen. Bei dieselelektrischen Antrieben besteht ferner nicht die Gefahr einer unzureichenden Maschinenkontrolle, wenn der Propeller, beispielsweise bei rauher See, aus dem Wasser kommt.By flooding the ballast tanks, it is possible to immerse the semi-submersible heavy cargo freighter so far that the transport platform is lowered below the swimming water line in order to pick up or deliver cargo that is floatable or, for example, stored on a pontoon. Conversely, by draining the ballast tanks, it is possible for the transport platform to rise under the freight to be transported in order to dock it. In addition to this float-on / float-off method, the loading and unloading of cargo can also be carried out using the so-called roll-on / roll-off method, in which the transport platform of the semi-submersible heavy lift carrier is raised or lowered to the level of the quay . It is known to provide cargo ships with an electric ship propulsion system. In diesel-electric systems, the electric propeller motor is usually fed by generators which are driven by diesel engines and / or gas turbines. A diesel-electric drive requires higher investment costs compared to diesel engines directly coupled to the ship's propeller, but offers the advantage of more efficient use and enables a high torque on the propeller shaft even under very high load conditions. With diesel-electric drives there is also no risk of inadequate machine control if the propeller comes out of the water, for example in rough seas.
Bei konventionellen dieselelektrischen Antrieben sind alle elektrischen Anlagenteile binnenbords untergebracht und Motoren, Getriebe und Antriebswellen in einer Fluchtlinie ausgerichtet . Unbefriedigend sind hierbei auftretende hohe mechanische und hydrodynamische Verluste sowie eine im Vergleich zu außenbords angetriebenen Propellern beschränkte Manövrierfähigkeit. Nachteilig ist außerdem ein verhältnismäßig unwirtschaftlicher Kraftstoffverbrauch.With conventional diesel-electric drives, all electrical system parts are housed inboard and engines, gearboxes and drive shafts are aligned. The high mechanical and hydrodynamic losses that occur as well as limited maneuverability compared to outboard propellers are unsatisfactory. Another disadvantage is a relatively uneconomical fuel consumption.
Der Erfindung liegt die Aufgabe zugrunde, einen halbeintauch- baren Schwergutfrachter zu schaffen, der eine hohe Kraftstoffeffizienz aufweist und sich durch eine gute Manövrierfähigkeit auszeichnet.The invention has for its object to provide a semi-submersible heavy lift, which has high fuel efficiency and is characterized by good maneuverability.
Die Lösung dieser Aufgabe besteht in einem halbeintauchbaren Schwergutfrachter mit flut- und lenzbaren Boden- und Seitentanks zum Be- und Entladen von Frachtgut nach der float-on/ float-off- und/oder roll-on/roll-off-Methode und einer dieselelektrischen Antriebsanlage, die als Hauptmaschinen Dieselmotoren aufweist, die zumindest einen Azimuth-Ruderpropel- 1er antreiben, wobei zur Verbesserung der Manövrierfähigkeit eine Querschubeinrichtung im Vorschiff vorgesehen ist und wobei die Gleichgewichtslage durch Einbringen von Wasserballast in obere und untere Tanks bezüglich des Frachtgutes trimmbar ist.The solution to this problem consists in a semi-submersible heavy cargo freighter with floodable and drainable bottom and side tanks for loading and unloading cargo according to the float-on / float-off and / or roll-on / roll-off method and a diesel-electric one Drive system which has diesel engines as main machines which drive at least one azimuth rudder propeller, a transverse thrust device being provided in the foredeck to improve maneuverability, and the equilibrium position being brought in by introducing water ballast is trimmable in upper and lower tanks with respect to the cargo.
Ein solchermaßen ausgestalteter halbeintauchbarer Schwergut- frachter weist gegenüber bekannten Schiffen dieser Art einen geringeren Kraftstoffverbrauch auf und ist besonders gut manövrierbar. Ursächlich hierfür ist zum einen die Verwendung eines Azimuth-Ruderpropellers, der neben einer besonders guten Manövrierbarkeit auch einen besseren Schiffswiderstand ermöglicht. Dies erlaubt ein präzisieres Fahrverhalten, insbesondere beim Be- und Entladen, und macht die Hilfe von Schleppern daher weitgehend entbehrlich. Zu einer guten Manövrierfähigkeit tragen zum anderen die aufgrund der trimmbaren Gleichgewichtslage gute Schiffsstabilität und die Querschub- einrichtung im Vorschiff bei. Indem die Azimuth-Ruderpropel- ler von einer dieselelektrischen Antriebsanlage angetrieben werden, ist eine hohe Kraftstoffeffizienz gewährleistet.A semi-submersible heavy lift freighter designed in this way has lower fuel consumption than known ships of this type and is particularly easy to maneuver. The reason for this is, on the one hand, the use of an azimuth rudder propeller, which, in addition to particularly good maneuverability, also enables better ship resistance. This allows a more precise driving behavior, especially when loading and unloading, and therefore makes the help of tractors largely unnecessary. On the other hand, good ship stability due to the trimmable equilibrium position and the transversal thrust device in the bow contribute to good maneuverability. The azimuth rudder propellers are driven by a diesel-electric drive system, which ensures high fuel efficiency.
Von besonderem Vorteil ist es, die dieselelektrische An- triebsanlage im Vorschiff anzuordnen, so daß sich hinsichtlich der Transporteignung des Schwergutfrachters eine optimierte Ausnutzung der Schiffsräumlichkeiten ergibt. Die Anordnung der wesentlichen Anlagenteile im Vorschiff gewährleistet eine größtmögliche Variabilität zum Be- und Entladen von Frachtgut auf der auf diese Weise keinen baulichen Beschränkungen unterliegenden Transportplattform im Achterschiff.It is particularly advantageous to arrange the diesel-electric propulsion system in the foredeck, so that an optimized utilization of the ship's premises results with regard to the suitability of the heavy cargo carrier for transportation. The arrangement of the essential parts of the system in the foredeck guarantees the greatest possible variability for loading and unloading cargo on the transport platform in the aft ship, which is not subject to structural restrictions in this way.
Von besonderem Vorteil ist es ferner, den Azimuth-Ruderpro- peller durch einen außenbords angeordneten Elektromotor anzu- treiben, der durch eine von den Hauptmaschinen angetriebenen Generator gespeist wird. Die Verwendung von außenbords angeordneten Elektromotoren zum Antrieb eines oder mehrerer Azi- muth-Ruderpropeller bietet den Vorteil einer besonders hohen Kraftstoffeffizienz . Diese in der Praxis unter der Bezeich- nung SSP bekannte Antriebstechnologie zeichnet sich ferner durch einen geringen Schiffswiderstand bei den verschiedensten Schiffsrümpfen aus und bedarf keiner zusätzlichen Kühlung, da diese durch das den Elektromotor umströmende Wasser bewirkt wird. Darüber hinaus ist der SSP-Antrieb mit geringen Nutz- und Wartungskosten verbunden.It is also particularly advantageous to drive the azimuth rudder propeller by means of an outboard electric motor which is fed by a generator driven by the main engines. The use of outboard electric motors to drive one or more azimuth rudder propellers offers the advantage of particularly high fuel efficiency. This propulsion technology, known in practice under the name SSP, is also characterized by low ship resistance in a wide variety of ship hulls and does not require any additional cooling, since this is caused by the water flowing around the electric motor is effected. In addition, the SSP drive is associated with low usage and maintenance costs.
Gemäß einem weiteren Merkmal der Erfindung ist der Azimuth- Ruderpropeller als azimuthierender Ruder-Doppelpropeller ausgebildet. Doppelpropeller sind zwar im Vergleich zu Einschraubern mit höheren Anschaffungs- und Wartungskosten verbunden, das Vorsehen von zwei Propellern ermöglicht aber, den Propellerdurchmesser kleiner zu wählen mit der Folge, daß der halbeintauchbare Schwergutfrachter mit einem geringeren Tiefgang ausbildbar ist, wodurch sich ein geringerer Kostenaufwand ergibt. Gemäß einer vorteilhaften Weiterbildung der Erfindung ist auch die Querschubeinrichtung elektrisch angetrieben, um zu einer kraftstoffeffizienten und kostengünsti- gen Ausgestaltung des Schwergutfrachters beizutragen.According to a further feature of the invention, the azimuth rudder propeller is designed as an azimuth rudder double propeller. Double propellers are associated with higher acquisition and maintenance costs in comparison to screw-in devices, but the provision of two propellers enables the propeller diameter to be chosen smaller, with the result that the semi-submersible heavy cargo ship can be designed with a lower draft, which results in a lower cost. According to an advantageous development of the invention, the transverse thrust device is also electrically driven in order to contribute to a fuel-efficient and cost-effective configuration of the heavy cargo carrier.
In einer bevorzugten Ausführungsform ist die Querschubeinrichtung im Vorschiff von einem zentralen Navigationspult im Ruderhaus und von zwei Brücken-Seitenflügeln des halbein- tauchbaren Schwergutfrachters aus steuerbar, um eine größtmögliche Übersichtlichkeit beim Manövrieren zu gewährleisten. Hierzu trägt auch bei, wenn gemäß einem weiteren vorteilhaften Merkmal der Erfindung das Fluten und Lenzen der Boden- und Seitentanks von einem Kontrollpult auf der Achternseite des Ruderhauses aus steuerbar ist.In a preferred embodiment, the transversal thruster in the foredeck can be controlled from a central navigation console in the wheelhouse and from two bridge side wings of the semi-submersible heavy cargo ship in order to ensure the greatest possible clarity when maneuvering. This also helps if, according to a further advantageous feature of the invention, the flooding and draining of the bottom and side tanks can be controlled from a control desk on the aft side of the wheelhouse.
Zweckmäßigerweise sind die Schalt- und Signaltafeln des halbeintauchbaren Schwergutfrachters in einem sc allisolierten Maschinenkontrollraum untergebracht, um den von dem Schiffs- maschinen ausgehenden Schallpegel zu dämpfen. Zu diesem Zweck ist es außerdem vorteilhaft, gemäß einem weiteren Merkmal der Erfindung die Hauptmaschinen mit Schalldämpfern zu versehen.The switch and signal boards of the semi-submersible heavy goods carrier are expediently housed in a fully insulated machine control room in order to dampen the sound level emanating from the ship's machines. For this purpose, it is also advantageous, according to a further feature of the invention, to provide the main engines with silencers.
Um besonders geringe Betriebskosten zu erreichen, sind gemäß einer vorteilhaften Weiterbildung der Erfindung die Dieselmotoren mit Schweröl betreibbar, das eine Viskosität von in etwa 3.500 s Redwood aufweist. Zu geringen Betriebskosten trägt ferner bei, wenn gemäß einer weiteren vorteilhaften Weiterbildung der Erfindung als Hilfsmaschinen Dieselmotoren vorgesehen sind, die mit Marine-Dieselöl betreibbar sind. Vorteilhafterweise sind die Hilfsmaschinen dabei auf einem schwingungsgedämpften Fundament aufgestellt, so daß sich ein möglichst geringer Geräuschpegel entwickelt.In order to achieve particularly low operating costs, according to an advantageous development of the invention, the diesel engines can be operated with heavy oil which has a viscosity of approximately 3,500 s redwood. Low operating costs also contribute if according to another advantageous Further development of the invention as auxiliary machines diesel engines are provided which can be operated with marine diesel oil. The auxiliary machines are advantageously set up on a vibration-damped foundation so that the lowest possible noise level develops.
Gemäß einem weiteren Merkmal der Erfindung ist die Abgaslei- tung der Antriebsanlage beweglich angeordnet, um eine größtmögliche Variabilität hinsichtlich einer schallgünstigen Lei- tungsführung sicherzustellen. Mit der Erfindung wird weiterhin vorgeschlagen, daß auf dem Vordeck Ladegeschirr, vorzugsweise hydraulisch betriebene Schiffskrane, angeordnet sind, so daß zum Be- und Entladen auch die herkömmliche lift-on/ lift-off-Methode angewandt werden kann. Schließlich wird vor- geschlagen, daß zwei Ankerwinden mit Ankerkette auf dem Vorschiff und eine Ankerwinde mit einem Ankertau auf dem Achterschiff angeordnet sind, um ein zuverlässiges Drei-Punkt-Festmachen zu gewährleisten.According to a further feature of the invention, the exhaust line of the drive system is arranged to be movable in order to ensure the greatest possible variability with regard to a sound-conducting line. The invention further proposes that loading gear, preferably hydraulically operated ship cranes, be arranged on the foredeck so that the conventional lift-on / lift-off method can also be used for loading and unloading. Finally, it is proposed that two windlasses with an anchor chain be arranged on the fore ship and one windlass with an anchor rope on the aft ship in order to ensure reliable three-point mooring.
Weitere Einzelheiten und Vorteile des Gegenstandes der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines bevorzugten Ausführungsbespieles . In der zugehörigen Zeichnung zeigen im einzelnenFurther details and advantages of the subject matter of the invention result from the following description of a preferred exemplary embodiment. In the accompanying drawing show in detail
FIG 1 eine Seitenansicht eines halbeintauchbaren Schwergutfrachters ; FIG 2 eine Draufsicht auf den halbeintauchbaren Schwergutfrachter gemäß FIG 1 und FIG 3 eine Seitenansicht eines Azimuth-Ruder-Doppelpropel- lers.1 shows a side view of a semi-submersible heavy cargo ship; 2 shows a plan view of the semi-submersible heavy cargo freighter according to FIG. 1 and FIG. 3 shows a side view of an azimuth rudder double propeller.
Der in den Figuren 1 und 2 dargestellte halbeintauchbare Schwergutfrachter weist eine Länge über alles von 156 m auf. Die Länge zwischen den Loten beträgt 145 m. Das Frachtdeck hat bei einer Länge von 126 m und einer Breite von 32,26 m eine freie Transportfläche von ca. 4.065 m2. Die Seitenhöhe im Bereich des Frachtdecks beträgt 10 m, während der Tiefgang des halbeintauchbaren Schwergutfrachters bei Kons ruktions- Freibord 7,50 m und bei abgesenktem Frachtdeck 19,0 m ist.The semi-submersible heavy lift freighter shown in FIGS. 1 and 2 has a total length of 156 m. The length between the plumb bobs is 145 m. With a length of 126 m and a width of 32.26 m, the cargo deck has a free transport area of approx.4,065 m 2 . The side height in the area of the cargo deck is 10 m, during the draft of the semi-submersible heavy cargo freighter is 7.50 m on the construction freeboard and 19.0 m on the lowered cargo deck.
Der halbeintauchbare Schwergutfrachter hat bei Konstruktions- Freibord ein Totgewicht von 18.000 t. Dieses setzt sich zusammen aus 2.000 t als Kraftstoff für die Hauptmaschinen dienendes Schweröl (HFO 380), 172 t als Kraftstoff für die Hilfsmaschinen dienendes Marine-Dieselöl für das eine Ladekapazität von ca. 200 m3 vorhanden ist, 300 t Frischwasser, für das dementsprechend eine Ladekapazität von 300 m3 vorhanden ist, 25 t Schmieröl, 20 t Vorräte für die Crew, 20 t Ersatzteile und 15.463 t Nutzlast. Der mittlere Konstruktionstief- gang beträgt bei diesem Totgewicht in Seewasser mit einer spezifischen Dichte von 1.025 t/m3 in etwa 7,5 m. Dies ent- spricht dem Tiefgang bei Konstruktions-Freibord.The semi-submersible heavy lift freighter has a dead weight of 18,000 t on construction freeboard. This is made up of 2,000 t of heavy oil (HFO 380) serving as fuel for the main engines, 172 t of marine diesel oil serving as fuel for the auxiliary engines, for which a loading capacity of approx. 200 m 3 is available, 300 t of fresh water, for which there is a loading capacity of 300 m 3 , 25 t of lubricating oil, 20 t of supplies for the crew, 20 t of spare parts and 15,463 t of payload. The average design depth for this dead weight in sea water with a specific density of 1,025 t / m 3 is approximately 7.5 m. This corresponds to the draft of the freeboard.
Der halbeintauchbare Schwergutfrachter weist ferner eine Ladekapazität von ca. 40 m3 für Schmutzöl und von ca. 5 m3 für Abwasser auf. Auf dem Vorschiff sind oberhalb des Vordecks Unterkünfte für 22 Mannschaftsmitglieder und 16 Passagiere vorgesehen. Auf dem Vorschiff sind weiterhin 3 als Hauptmaschinen dienende Dieselmotoren mit einer Drehzahl von ca. 720 min"1 angeordnet. Mit den als 9-zylindrige Reihenmaschinen ausgebildeten Dieselmotoren kann eine elektrische Leistung von jeweils ca. 3.645 kW erzeugt werden. Bei elektrischen Verlusten von ca. 8,7% vom Generator zum Antrieb und ohne Versorgung des Bordsystems kann somit eine Leistung von 8.675 kW bereitgestellt werden.The semi-submersible heavy lift also has a loading capacity of approx. 40 m 3 for dirty oil and approx. 5 m 3 for waste water. Accommodation for 22 crew members and 16 passengers is provided on the foredeck above the foredeck. On the foredeck there are also 3 diesel engines serving as main engines with a speed of approx. 720 min "1. The diesel engines designed as 9-cylinder in-line engines can produce an electrical output of approx. 3,645 kW each. With electrical losses of approx. 8.7% from the generator to the drive and without supplying the on-board system can thus provide an output of 8,675 kW.
Der halbeintauchbare Schwergutfrachter ist ferner mit zwei als Dieselmotoren ausgebildeten Hilfsmaschinen für die Stromerzeugung des Bordsystems ausgerüstet, die mit einer Drehzahl von 720/900 min"1 eine Generatorleistung von jeweils 720 kW liefern. Für Aufenthalte im Hafen und Notfälle ist ein drit- ter Dieselgenerator vorgesehen, der eine Drehzahl vonThe semi-submersible heavy lift is also equipped with two auxiliary machines designed as diesel engines for the power generation of the on-board system, which deliver a generator output of 720 kW at a speed of 720/900 min "1. A third diesel generator is provided for stays in port and emergencies , which has a speed of
1800 min"1 und eine Generatorleistung gemäß den Bestimmungen der SOLAS aufweist. Als Schiffsantrieb dienen zwei Azimuth-Ruder-Doppelpropeller, die mittels außenbords angeordneten Elektromotoren angetrieben werden und eine Betriebsgeschwindigkeit von 14 kn erzeugen können. Dieser in FIG 3 dargestellte, sogenannte SSP-An- trieb wird durch zwei elektrisch angetriebene Querschubeinrichtungen ergänzt, welche die Manövrierfähigkeit und Stabilität des Schwergutfrachters verbessern. Versuche ergaben, daß mittels den beiden Querschubeinrichtungen der abgesenkte Schwergutfrachter gegen eine Windkraft von 6 bis 7 Beaufort ohne weiteres präzise gesteuert werden kann.1800 min "1 and has a generator power according to the provisions of SOLAS. Two azimuth rudder double propellers serve as ship propulsion, which are driven by outboard electric motors and can generate an operating speed of 14 kn. This so-called SSP drive shown in FIG. 3 is supplemented by two electrically driven transverse thrust devices which improve the maneuverability and stability of the heavy cargo ship. Tests have shown that by means of the two transverse thrust devices, the lowered heavy cargo freighter can be easily controlled precisely against a wind force of 6 to 7 Beaufort.
Zum Befestigen des Frachtguts auf dem Frachtdeck stehen eine Vielzahl von Winden zur Verfügung. Schallschutzmaßnahmen, wie beispielsweise die räumliche Trennung von Maschinenräumen und Unterkünften, Geräuschkapselung der Unterkünfte auf dem Vordeck oder ein Schalldämpfung für die Hauptmaschinen, gewährleisten ergonomische Arbeitsbedingungen. Der halbeintauchbare Schwergutfrachter ist innerhalb von 4 Stunden von dem abgesenkten Tiefgang von 18 m auf einen Tiefgang von 7,50 an- hebbar, indem mittels Druckluft die Ballasttanks leergepumpt werden. Durch den geringen Verbrauch der Hauptmaschinen von 46,98 mT/24hr kann der halbeintauchbare Schwergutfrachter, der je nach Anwendung auch ein Dockschiff sein kann, bei einem für die Berechnung zugrundegelegten Zeitraum von 360 Ta- gen 34,6 Tage länger unterwegs sein als vergleichbare konventionelle Schiffe. Dies bedeutet, daß zu den gleichen Betriebskosten eine Zusatzfracht transportiert werden kann. Die hohe Kraftstoffeffizienz ist auch darauf zurückzuführen, daß je nach Bedarf nur ein oder zwei Dieselmotoren der Hauptma- schinen am Laufen sind. Damit wird nicht zuletzt auch ökologischen Aspekten Rechnung getragen. A variety of winches are available to secure the cargo on the cargo deck. Soundproofing measures, such as the spatial separation of machine rooms and accommodations, noise encapsulation of the accommodations on the foredeck or soundproofing for the main engines, ensure ergonomic working conditions. The semi-submersible heavy lift can be lifted from the lowered draft of 18 m to a draft of 7.50 within 4 hours by pumping the ballast tanks empty using compressed air. Due to the low consumption of the main engines of 46.98 mT / 24hr, the semi-submersible heavy cargo freighter, which can also be a dock ship depending on the application, can travel 34.6 days longer than comparable conventional vehicles for a period of 360 days Ships. This means that additional freight can be transported at the same operating costs. The high fuel efficiency is also due to the fact that, depending on requirements, only one or two diesel engines of the main engines are running. Last but not least, ecological aspects are taken into account.

Claims

Patentansprüche claims
1. Halbeintauchbarer Schwergutfrachter mit flut- und lenzbaren Boden- und Seitentanks zum Be- und Entladen von Frachtgut nach der float-on/float-off- und/oder roll-on/roll-off-Methode und einer dieselelektrischen Antriebsanlage, die als Hauptmaschinen Dieselmotoren aufweist, die zumindest einen Azimuth-Ruderpropeller antreiben, wobei zur Verbesserung der Manövrierfähigkeit eine Querschubeinrichtung im Vorschiff vorgesehen ist und wobei die Gleichgewichtslage durch Einbringen von Wasserballast in obere und untere Tanks bezüglich des Frachtgutes trimmbar ist.1. Semi-submersible heavy cargo freighter with floodable and drainable bottom and side tanks for loading and unloading of cargo according to the float-on / float-off and / or roll-on / roll-off method and a diesel-electric drive system that acts as the main machine Has diesel engines which drive at least one azimuth rudder propeller, a transverse thrust device being provided in the foredeck to improve maneuverability and the equilibrium position being trimmable with respect to the cargo by introducing water ballast into upper and lower tanks.
2. Halbeintauchbarer Schwergutfrachter nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß die dieselelektrische Antriebsanlage im Vorschiff angeordnet ist.2. Semi-submersible heavy lift freighter according to claim 1, d a d u r c h g e k e n n z e i c h n e t that the diesel-electric drive system is arranged in the foredeck.
3. Halbeintauchbarer Schwergutfrachter nach Anspruch 1 oder 2, d a d u r c h g e k e n n z e i c h n e t , daß der Azimuth-Ruderpropeller durch einen außenbords angeordneten3. Semi-submersible heavy lift freighter according to claim 1 or 2, d a d u r c h g e k e n e z e i c h n e t that the azimuth rudder propeller arranged by an outboard
Elektromotor antreibbar ist, der durch einen von den Hauptmaschinen angetriebenen Generator gespeist wird.Electric motor can be driven, which is fed by a generator driven by the main machines.
4. Halbeintauchbarer Schwergutfrachter nach einem der Ansprü- ehe 1 bis 3, d a d u r c h g e k e n n z e i c h n e t , daß der Azimuth-Ruderpropeller als azimuthierender Ruder-Doppelpropeller ausgebildet ist.4. Semi-submersible heavy lift freighter according to one of claims 1 to 3, so that the azimuth rudder propeller is designed as an azimuth rudder double propeller.
5. Halbeintauchbarer Schwergutfrachter nach einem der Ansprü- ehe 1 bis 4, d a d u r c h g e k e n n z e i c h n e t , daß die Querschubeinrichtung elektrisch angetrieben ist. 5. Semi-submersible heavy lift freighter according to one of claims 1 to 4, characterized in that the transverse thrust device is electrically driven.
6. Halbeintauchbarer Schwergutfrachter nach einem der Ansprüche 1 bis 5, d a d u r c h g e k e n n z e i c h n e t , daß die QuerSchubeinrichtung von einem zentralen Navigationspult im Ruderhaus und von zwei Brücken-Seitenflügeln aus steuerbar ist.6. Semi-submersible heavy lift freighter according to one of claims 1 to 5, d a d u r c h g e k e n n z e i c h n e t that the transverse thruster is controllable from a central navigation console in the wheelhouse and from two bridge side wings.
7. Halbeintauchbarer Schwergutfrachter nach einem der Ansprüche 1 bis 6, d a d u r c h g e k e n n z e i c h n e t , daß das Fluten und Lenzen der Boden- und Seitentanks von ei- nem Kontrollpult auf der Achternseite des Ruderhauses aus steuerbar ist.7. Semi-submersible heavy lift freighter according to one of claims 1 to 6, d a d u r c h g e k e n n z e i c h n e t that the flooding and draining of the bottom and side tanks is controllable from a control panel on the aft side of the wheelhouse.
8. Halbeintauchbarer Schwergutfrachter nach einem der Ansprüche 1 bis 7, d a d u r c h g e k e n n z e i c h n e t , daß Schalt- und Signaltafeln in einem schallisolierten Ma- schinenkontrollraum untergebracht sind.8. Semi-submersible heavy cargo freighter according to one of claims 1 to 7, d a d u r c h g e k e n n z e i c h n e t that switch and signal panels are housed in a soundproofed machine control room.
9. Halbeintauchbarer Schwergutfrachter nach einem der Ansprüche 1 bis 8, d a d u r c h g e k e n n z e i c h n e t , daß die Hauptmaschinen mit Schalldämpfern versehen sind.9. Semi-submersible heavy lift freighter according to one of claims 1 to 8, d a d u r c h g e k e n n z e i c h n e t that the main engines are provided with silencers.
10. Halbeintauchbarer Schwergutfrachter nach einem der Ansprüche 1 bis 9, d a d u r c h g e k e n n z e i c h n e t , daß die Dieselmotoren mit Schweröl betreibbar sind, das eine Viskosität von in etwa 3.500 s Redwood aufweist.10. Semi-submersible heavy cargo freighter according to one of claims 1 to 9, d a d u r c h g e k e n n z e i c h n e t that the diesel engines can be operated with heavy oil that has a viscosity of about 3,500 s Redwood.
11. Halbeintauchbarer Schwergutfrachter nach einem der Ansprüche 1 bis 10, d a d u r c h g e k e n n z e i c h n e t , daß als Hilfsmaschinen Dieselmotoren vorgesehen sind, die mit Marine-Dieselöl betreibbar sind. 11. Semi-submersible heavy lift freighter according to one of claims 1 to 10, characterized in that diesel engines are provided as auxiliary machines which can be operated with marine diesel oil.
12. Halbeintauchbarer Schwergutfrachter nach Anspruch 11, d a d u r c h g e k e n n z e i c h n e t , daß die Hilfsmaschinen auf einem schwingungsgedämpften Fundament aufgestellt sind.12. Semi-submersible heavy lift freighter according to claim 11, so that the auxiliary machines are set up on a vibration-dampened foundation.
13. Halbeintauchbarer Schwergutfrachter nach einem der Ansprüche 1 bis 12, d a d u r c h g e k e n n z e i c h n e t , daß die Abgasleitung der Antriebsanlage beweglich angeordnet ist.13. Semi-submersible heavy lift freighter according to one of claims 1 to 12, d a d u r c h g e k e n n z e i c h n e t that the exhaust pipe of the drive system is movably arranged.
14. Halbeintauchbarer Schwergutfrachter nach einem der Ansprüche 1 bis 13, d a d u r c h g e k e n n z e i c h n e t , daß auf dem Vordeck Ladegeschirr, vorzugsweise hydraulisch betriebene Schiffskrane, angeordnet sind.14. Semi-submersible heavy lift freighter according to one of claims 1 to 13, d a d u r c h g e k e n n z e i c h n e t that loading gear, preferably hydraulically operated ship cranes, are arranged on the foredeck.
15. Halbeintauchbarer Schwergutfrachter nach einem der vorherigen Ansprüche, d a d u r c h g e k e n n z e i c h n e t , daß zwei Ankerwinden mit Ankerkette auf dem Vorschiff und eine Ankerwinde mit einem Ankertau auf dem Achter- schiff angeordnet sind. 15. Semi-submersible heavy lift freighter according to one of the preceding claims, d a d u r c h g e k e n n z e i c h n e t that two anchor winches with anchor chain are arranged on the foredeck and one anchor winch with an anchor rope on the aft ship.
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KR20080049111A (en) 2008-06-03
ES2217866T3 (en) 2004-11-01
DE59908830D1 (en) 2004-04-15
NO20013077L (en) 2001-06-20
WO2000038976A1 (en) 2000-07-06
DE29823737U1 (en) 1999-09-30
EP1140616B1 (en) 2004-03-10
NO20013077D0 (en) 2001-06-20
CA2356675C (en) 2007-10-30

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