WO2024255959A1 - Roro or ropax ship having two two-stroke drive engines - Google Patents
Roro or ropax ship having two two-stroke drive engines Download PDFInfo
- Publication number
- WO2024255959A1 WO2024255959A1 PCT/DE2024/100506 DE2024100506W WO2024255959A1 WO 2024255959 A1 WO2024255959 A1 WO 2024255959A1 DE 2024100506 W DE2024100506 W DE 2024100506W WO 2024255959 A1 WO2024255959 A1 WO 2024255959A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ship
- roro
- ropax
- stroke
- propeller
- 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.)
- Ceased
Links
Classifications
-
- 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
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
- B63B25/002—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for goods other than bulk goods
- B63B25/008—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for goods other than bulk goods for wheeled cargo
-
- 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
- B63H21/32—Arrangements of propulsion power-unit exhaust uptakes; Funnels peculiar to vessels
-
- 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
- B63H5/08—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller
Definitions
- the invention relates to a RoRo or RoPax ship with two slow-running two-stroke engines arranged offset transversely to the longitudinal axis of the RoRo or RoPax ship, which are each connected by means of a propeller shaft to a ship propeller arranged at the stern, wherein the propeller shafts are each arranged at an acute angle to the longitudinal axis of the RoRo or RoPax ship, pointing outwards towards the stern.
- the invention therefore relates to a sea-going ship equipped for the transport of rolling cargo with or without passengers, which in the combination of rolling cargo with passengers is also referred to as a RoPax ferry, combi ferry or combi carrier.
- a RoRo ship designed in this way is known from the Ark Dania, for example.
- This ship has a two-stroke propulsion engine system consisting of 2x MAN 8S40ME-B9 propulsion engines, which are arranged directly next to each other and symmetrically to the ship's longitudinal axis, with the two propeller shafts arranged at the rear being aligned at an acute angle to the ship's longitudinal axis in the direction of the stern outwards, i.e. deviating from the ship's longitudinal axis towards the side of the ship.
- the disadvantage of this ship is a very wide machine shaft, which severely constricts the vehicle deck in the middle of the ship and thus significantly impairs the loading and unloading flow.
- the RoPax ferry “Stena Germanica” was converted at great technical and financial expense so that its two four-stroke diesel engines could run on both marine diesel and methanol in dual-fuel mode, thus meeting the stricter environmental guidelines that came into force on 1 January 2015.
- the “Lindanger” class of tankers was introduced in 2016, and The drive is a dual-fuel two-stroke engine that is more advantageous in the area of ship propulsion and runs on methanol.
- Two-stroke ship propulsion engines that use methanol and ammonia are already market-ready. The use of such fuels in four-stroke engines is technically much more demanding, and market readiness is lagging behind that of two-stroke propulsion engines.
- Mitsui OSK Lines is aware of plans to build a RoPax ship with a two-stroke engine, this is only a ferry for domestic travel, for which the international safety regulations of the IMO under SOLAS are not mandatory, such as the so-called Safe Return to Port requirement for a redundant propulsion system.
- a fundamental problem is that, for example, RoPax ships (unlike tankers) need to have two redundant propulsion systems for reasons of reliability, but these require a lot of space.
- the object of the invention is therefore to create a RoRo or RoPax ship with a propeller drive with two two-stroke engines, the construction of which requires only a small amount of work and material, whereby the drive should only require a small amount of space within the RoRo or RoPax ship.
- the basic idea of the invention is to create a RoRo or RoPax ship with a two-stroke propulsion system based on a twin engine system slightly offset one behind the other in the longitudinal direction of the ship, with the two shaft trains and the propellers integrated into the system. This measure makes it possible to minimize the space required across the width of the RoRo or RoPax ship.
- the arrangement according to the invention facilitates a spatial separation of the two drive motors while simultaneously fulfilling leak stability regulations.
- a RoRo or RoPax vessel is proposed with two slow-running two-stroke engines arranged transversely to the longitudinal axis of the RoRo or RoPax vessel, each of which is driven by a propeller shaft with a rear-mounted arranged ship propellers, wherein the propeller shafts are each directed at an acute angle to the longitudinal axis of the RoRo or RoPax ship in the direction of the stern and the two-stroke engines are arranged one behind the other in the longitudinal direction of the RoRo or RoPax ship, and wherein the width taken up by the two-stroke engines arranged one behind the other in the longitudinal direction of the RoRo or RoPax ship in a direction transverse to the longitudinal direction of the RoRo or RoPax ship, specifically perpendicular to the longitudinal axis of the RoRo or RoPax ship, is less than twice the width of a two-stroke engine.
- the width taken up by the two-stroke engines corresponds to a maximum of one and a half times the width of a two-stroke engine.
- the two-stroke engines are installed in a centrally arranged machine shaft, whereby the two-stroke engines extend vertically into the freeboard deck of the RoRo or RoPax ship and, due to the small overall width of both two-stroke engines, only take up a cargo space with a width of no more than four, preferably no more than three and most preferably no more than two truck vehicle lanes.
- the width of a truck vehicle lane is usually about 3.00 m to 3.20 m.
- two separate drive trains are therefore provided, it being understood in this arrangement that one drive train must be connected to one two-stroke engine and the associated ship's propeller by means of a propeller shaft which is longer than the propeller shaft of the other drive train connecting the other two-stroke engine to the other ship's propeller.
- the propeller shafts are each arranged at an acute angle to the longitudinal axis of the ship, with the propeller shafts running approximately from the center of the ship outwards (towards the respective side of the ship) and deviating from the longitudinal axis of the RoRo or RoPax ship.
- each propeller shaft runs outwards to the side of the RoRo or RoPax ship to which the associated two-stroke engine is offset. This creates an angle between the propeller shafts which, from a hydrodynamic point of view, should preferably be kept small, particularly preferably ⁇ 5°. This can easily be achieved by making the distance between the propellers and the two-stroke engines connected by means of the propeller shafts as large as possible.
- the two-stroke engines are preferably arranged in the center of the ship in relation to the longitudinal axis, particularly preferably towards the bow, so that the influence of a propeller shaft deviating from the longitudinal axis of the RoRo or RoPax ship is - -
- propeller angle remains low.
- the longitudinal axes of the two-stroke engines are not parallel but also aligned at an angle to each other.
- the acute angle formed by the propeller shafts to the longitudinal axis of the RoRo or RoPax vessel is preferably identical, so that the required offset of the two-stroke engines along the longitudinal axis of the RoRo or RoPax vessel also provides sufficient space.
- the two-stroke engines have identical performance parameters, i.e. are essentially identical, i.e. of the same construction or of the same type.
- the two-stroke engines preferably have the same dimensions.
- the two-stroke engines are arranged in compartments that are separated from one another.
- the compartments are specifically designed as separate engine rooms, whereby each two-stroke engine can be operated independently of the other two-stroke engine (in an emergency).
- the compartments are separated by a partition wall designed as a bulkhead, which is designed in particular as a firewall.
- all walls forming the respective compartment, including the ceiling and floor, are designed as bulkheads, so that the RoRo or RoPax ship is highly fail-safe even when space is limited.
- Fig. 1 is a longitudinal section of a preferred embodiment of a RoRo or RoPax ship according to the invention
- Fig. 2 is a plan view of the embodiment shown in Fig. 1 at the level of the
- Fig. 3 shows a cross-section through the previously shown RoRo or RoPax ship in the area of the two-stroke engines.
- Fig. 1 shows a longitudinal section of a preferred embodiment of a RoRo or RoPax ship according to the invention.
- Fig. 1 shows a RoRo or RoPax ship 10 with two slow-running two-stroke engines 20, 20', which are arranged one behind the other in the longitudinal direction of the RoRo or RoPax ship 10 and - as can be clearly seen in the plan view shown in Fig. 2 - offset transversely to the longitudinal axis of the RoRo or RoPax ship 10, wherein each two-stroke engine 20, 20' is connected by means of a propeller shaft 30, 30' to a ship propeller 40, 40' arranged at the rear.
- a propeller shaft 30' which is longer than the propeller shaft 30 connecting the other two-stroke engine 20 to the other ship's propeller 40.
- the two-stroke engines 20, 20' which in the embodiment are two-stroke engines of the same type, are preferably arranged in compartments (not shown) that are separated from one another, so that it is ensured that an engine failure of one two-stroke engine 20, 20' cannot spread to the other two-stroke engine 20, 20' and the RoRo or RoPax ship 10 remains maneuverable.
- the propeller shafts 30, 30' which are specifically designed to rotate in opposite directions, are - as can be seen from Fig. 2 - each arranged at an acute angle to the longitudinal axis of the RoRo or RoPax ship 10, wherein the acute angle taken by the propeller shafts 30, 30' to the longitudinal axis of the RoRo or RoPax ship 10 is essentially identical.
- Fig. 3 which shows a cross-section through the RoRo or RoPax ship 10 shown above in the area of the two-stroke engines, illustrates that the width taken up by the two-stroke engines 20, 20' arranged one behind the other in the longitudinal direction of the RoRo or RoPax ship 10 in a direction transverse to the longitudinal direction of the RoRo or RoPax ship 10 is less than twice the width of a two-stroke engine 20, 20'.
- a space-saving arrangement of the two-stroke engines 20, 20' can thus be achieved with only a minor influence on the loading capacity with regard to the transport of freight and passengers.
- the two-stroke engines 20, 20' arranged in the engine shaft extend vertically into the freeboard deck of the RoRo or RoPax vessel 10, but only take up a cargo space on the freeboard deck with a width of two to three truck lanes.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Prevention Of Electric Corrosion (AREA)
Abstract
Description
RoRo- oder RoPax-Schiff mit zwei Zweitakter-Antriebsmotoren RoRo or RoPax ship with two two-stroke propulsion engines
Die Erfindung betrifft ein RoRo- oder RoPax-Schiff mit zwei quer zur Längsachse des RoRo- oder RoPax-Schiffs versetzt angeordneten langsamlaufenden Zweitaktmotoren, die mittels jeweils einer Propellerwelle mit jeweils einem heckseitig angeordneten Schiffspropeller verbunden sind, wobei die Propellerwellen jeweils in einem spitzen Winkel zur Längsachse des RoRo- oder RoPax-Schiffs in Richtung des Hecks nach Außen gerichtet angeordnet sind. Die Erfindung betrifft also ein zum Transport von rollender Ladung ohne oder mit Passagieren eingerichtetes Seeschiff, das in der Kombination von rollender Ladung mit Passagieren auch als RoPax-Fähre, Kombifähre oder Kombicarrier bezeichnet wird. The invention relates to a RoRo or RoPax ship with two slow-running two-stroke engines arranged offset transversely to the longitudinal axis of the RoRo or RoPax ship, which are each connected by means of a propeller shaft to a ship propeller arranged at the stern, wherein the propeller shafts are each arranged at an acute angle to the longitudinal axis of the RoRo or RoPax ship, pointing outwards towards the stern. The invention therefore relates to a sea-going ship equipped for the transport of rolling cargo with or without passengers, which in the combination of rolling cargo with passengers is also referred to as a RoPax ferry, combi ferry or combi carrier.
Ein derartig ausgebildetes RoRo-Schiff ist beispielsweise von der Ark Dania bekannt. Dieses Schiff weist eine Zweitakter-Antriebsmotorenanlage bestehend aus 2x MAN 8S40ME-B9 Antriebsmotoren auf, die direkt nebeneinander und symmetrisch zur Schiffslängsachse angeordnet sind, wobei die zwei heckseitig angeordneten Propellerwellen in einem spitzen Winkel zur Schiffslängsachse in Richtung des Hecks nach Außen, d.h. von der Schiffslängsachse abweichend hin zur Schiffsseite ausgerichtet sind. Der Nachteil dieses Schiffs liegt in einem sehr breiten Maschinenschacht, der das Fahrzeugdeck in der Schiffsmitte stark einschnürt und dadurch den Be- und Entladungsfluss signifikant beeinträchtigt. A RoRo ship designed in this way is known from the Ark Dania, for example. This ship has a two-stroke propulsion engine system consisting of 2x MAN 8S40ME-B9 propulsion engines, which are arranged directly next to each other and symmetrically to the ship's longitudinal axis, with the two propeller shafts arranged at the rear being aligned at an acute angle to the ship's longitudinal axis in the direction of the stern outwards, i.e. deviating from the ship's longitudinal axis towards the side of the ship. The disadvantage of this ship is a very wide machine shaft, which severely constricts the vehicle deck in the middle of the ship and thus significantly impairs the loading and unloading flow.
Darüber hinaus besteht das Problem, dass die Betreiber von RoRo- oder RoPax-Schiffen aufgrund der von der UNO-Schifffahrtsorganisation IMO gesetzten Klimaziele vor technischen Herausforderungen zur Reduzierung von Emissionen stehen, beispielsweise durch Verwendung von klimaneutralen Treibstoffen wie etwa grüner Ammoniak oder grünes Methanol. In addition, there is the problem that operators of RoRo or RoPax vessels face technical challenges in reducing emissions due to the climate targets set by the UN maritime organization IMO, for example by using climate-neutral fuels such as green ammonia or green methanol.
So wurde bereits im Jahr 2015 das RoPax-F ährschiff „Stena Germanica“ mit viel technischem und finanziellem Aufwand derart umgerüstet, dass deren zwei Viertakt-Dieselmotoren im Dual-Fuel-Betrieb sowohl mit Marinediesel als auch mit Methanol betrieben werden und so die verschärften Umweltrichtlinien, die am 01.01.2015 in Kraft traten, erfüllen. Daneben wurde im Jahr 2016 im Bereich der Tanker die „Lindanger“ -Kl ässe vorgestellt, zu deren Antrieb ein im Bereich der Schiffsantriebe vorteilhafterer Dual-Fuel-Zweitaktmotor vorgesehen ist, der mit Methanol betrieben wird. Für die Verwendung von Methanol und Ammoniak existieren heute bereits marktreife Zweitakter-Schiffsantriebsmotoren. Die Verwendung solcher Treibstoffe in Viertakter-Motoren ist technisch deutlich anspruchsvoller, entsprechend hinkt die Marktreife hinter den Zweitakter-Antriebsmotoren her. In 2015, the RoPax ferry “Stena Germanica” was converted at great technical and financial expense so that its two four-stroke diesel engines could run on both marine diesel and methanol in dual-fuel mode, thus meeting the stricter environmental guidelines that came into force on 1 January 2015. In addition, the “Lindanger” class of tankers was introduced in 2016, and The drive is a dual-fuel two-stroke engine that is more advantageous in the area of ship propulsion and runs on methanol. Two-stroke ship propulsion engines that use methanol and ammonia are already market-ready. The use of such fuels in four-stroke engines is technically much more demanding, and market readiness is lagging behind that of two-stroke propulsion engines.
Wenngleich Pläne der Mitsui OSK Lines zum Bau eines RoPax- Schiffes mit einem Zweitakter- Antriebsmotor bekannt sind, so handelt sich hierbei lediglich um ein Fährschiff für nationale Fahrt, für das die internationalen Sicherheitsvorschriften der IMO gemäß SOLAS nicht verpflichtend sind, wie z.B. die sog. Safe Return to Port-Forderung nach einer redundanten Antriebsanlage. Ein grundsätzliches Problem liegt nämlich darin, dass z.B. bei RoPax- Schiffen (anders als bei Tankern) aus Gründen der Ausfallsicherheit zwei redundante Antriebsanlagen vorzusehen sind, diese aber einen hohen Platzbedarf haben. Although Mitsui OSK Lines is aware of plans to build a RoPax ship with a two-stroke engine, this is only a ferry for domestic travel, for which the international safety regulations of the IMO under SOLAS are not mandatory, such as the so-called Safe Return to Port requirement for a redundant propulsion system. A fundamental problem is that, for example, RoPax ships (unlike tankers) need to have two redundant propulsion systems for reasons of reliability, but these require a lot of space.
Aufgabe der Erfindung ist es daher, ein RoRo- oder RoPax-Schiff mit einem Propellerantrieb mit zwei Zweitaktmotoren aufweisenden Antrieb zu schaffen, zu dessen Bau ein nur geringer Arbeits- und Materialaufwand erforderlich ist, wobei der Antrieb einen nur geringen Platzbedarf innerhalb des RoRo- oder RoPax- Schiffs haben soll. The object of the invention is therefore to create a RoRo or RoPax ship with a propeller drive with two two-stroke engines, the construction of which requires only a small amount of work and material, whereby the drive should only require a small amount of space within the RoRo or RoPax ship.
Diese Aufgabe wird erfindungsgemäß durch das RoRo- oder RoPax-Schiff mit den Merkmalen von Anspruch 1 gelöst. Die Unteransprüche geben vorteilhafte Ausgestaltungen der Erfindung wieder. This object is achieved according to the invention by the RoRo or RoPax ship with the features of claim 1. The subclaims reflect advantageous embodiments of the invention.
Grundgedanke der Erfindung ist es, ein RoRo- oder RoPax-Schiff mit einer Zweitakt- Antriebsanlage zu schaffen, die auf einer in Schifflängsrichtung leicht versetzt hintereinanderstehenden Doppelmotorenanlage beruht, wobei die beiden Wellenstränge und die Propeller in das System integriert sind. Aufgrund dieser Maßnahme ist es möglich, den über die Breite des RoRo- oder RoPax-Schiffs erforderlichen Platzbedarf zu minimieren.The basic idea of the invention is to create a RoRo or RoPax ship with a two-stroke propulsion system based on a twin engine system slightly offset one behind the other in the longitudinal direction of the ship, with the two shaft trains and the propellers integrated into the system. This measure makes it possible to minimize the space required across the width of the RoRo or RoPax ship.
Zugleich wird durch die erfindungsgemäße Anordnung eine räumliche Trennung der beiden Antriebsmotoren bei gleichzeitiger Erfüllung von Leckstabilitätsvorschriften erleichtert. At the same time, the arrangement according to the invention facilitates a spatial separation of the two drive motors while simultaneously fulfilling leak stability regulations.
Erfindungsgemäß wird also ein RoRo- oder RoPax-Schiff mit zwei quer zur Längsachse des RoRo- oder RoPax-Schiffs versetzt angeordneten langsamlaufenden Zweitaktmotoren vorgeschlagen, die mittels jeweils einer Propellerwelle mit jeweils einem heckseitig angeordneten Schiffspropeller verbunden sind, wobei die Propellerwellen jeweils in einem spitzen Winkel zur Längsachse des RoRo- oder RoPax-Schiffs in Richtung des Hecks nach Außen gerichtet und die Zweitaktmotoren in Längsrichtung des RoRo- oder RoPax-Schiffs hintereinander angeordnet sind und wobei die von den in Längsrichtung des RoRo- oder RoPax-Schiffs hintereinander angeordneten Zweitaktmotoren in einer Richtung quer zur Längsrichtung des RoRo- oder RoPax-Schiffs, speziell senkrecht zur Längsachse des RoRo- oder RoPax-Schiffs eingenommene Breite geringer als die doppelte Breite eines Zweitaktmotors ist. Höchst bevorzugt ist vorgesehen, dass die von den Zweitaktmotoren eingenommene Breite maximal der anderthalbfachen Breite eines Zweitaktmotors entspricht. Nach einer weiteren bevorzugten Ausgestaltung sind die Zweitaktmotoren in einem mittig angeordneten Maschinenschacht eingebaut, wobei sich die Zweitaktmotoren vertikal in das Freiborddeck des RoRo- oder RoPax-Schiffs erstrecken und dort aufgrund der geringen Gesamtbreite beider Zweitaktmotoren nur einen Laderaum in einer Breite von nicht mehr als vier, bevorzugt nicht mehr als drei und höchst bevorzugt nicht mehr als zwei LKW- Fahrzeugspuren in Anspruch nehmen. Dabei beträgt die Breite einer LKW-F ahrzeugspur üblicherweise etwa 3,00 m bis 3,20 m. According to the invention, a RoRo or RoPax vessel is proposed with two slow-running two-stroke engines arranged transversely to the longitudinal axis of the RoRo or RoPax vessel, each of which is driven by a propeller shaft with a rear-mounted arranged ship propellers, wherein the propeller shafts are each directed at an acute angle to the longitudinal axis of the RoRo or RoPax ship in the direction of the stern and the two-stroke engines are arranged one behind the other in the longitudinal direction of the RoRo or RoPax ship, and wherein the width taken up by the two-stroke engines arranged one behind the other in the longitudinal direction of the RoRo or RoPax ship in a direction transverse to the longitudinal direction of the RoRo or RoPax ship, specifically perpendicular to the longitudinal axis of the RoRo or RoPax ship, is less than twice the width of a two-stroke engine. Most preferably, it is provided that the width taken up by the two-stroke engines corresponds to a maximum of one and a half times the width of a two-stroke engine. According to a further preferred embodiment, the two-stroke engines are installed in a centrally arranged machine shaft, whereby the two-stroke engines extend vertically into the freeboard deck of the RoRo or RoPax ship and, due to the small overall width of both two-stroke engines, only take up a cargo space with a width of no more than four, preferably no more than three and most preferably no more than two truck vehicle lanes. The width of a truck vehicle lane is usually about 3.00 m to 3.20 m.
Erfindungsgemäß sind also zwei voneinander getrennte Antriebstränge vorgesehen, wobei es sich bei dieser Anordnung versteht, dass der eine Antriebstrang mit dem einen Zweitaktmotor und dem zugehörigen Schiffspropeller mittels einer Propellerwelle verbunden sein muss, die länger als die den anderen Zweitaktmotor mit dem anderen Schiffspropeller verbindende Propellerwelle des anderen Antriebsstrangs ist. According to the invention, two separate drive trains are therefore provided, it being understood in this arrangement that one drive train must be connected to one two-stroke engine and the associated ship's propeller by means of a propeller shaft which is longer than the propeller shaft of the other drive train connecting the other two-stroke engine to the other ship's propeller.
Die Propellerwellen sind jeweils in einem spitzen Winkel zur Schiffslängsachse angeordnet, wobei die Propellerwellen näherungsweise von der Schiffsmitte abweichend von der Längsachse des RoRo- oder RoPax-Schiffs nach außen (hin zur jeweiligen Schiffsseite) verlaufen. Insbesondere verläuft jede Propellerwelle zu der Seite des RoRo- oder RoPax- Schiffs nach außen, zu der der zugehörige Zweitaktmotor versetzt ist. Dabei entsteht zwischen den Propellerwellen ein Winkel, der aus hydrodynamischer Sicht bevorzugt gering, besonders bevorzugt < 5° zu halten ist. Dieses kann ohne weiteres dadurch erfolgen, dass der Abstand zwischen den Propellern und den mittels den Propellerwellen verbundenen Zweitaktmotoren möglichst groß ausgelegt wird. Speziell sind die Zweitaktmotoren bevorzugt in Bezug auf die Längsachse in der Schiffsmitte, besonders bevorzugt in Richtung Bug angeordnet, sodass der Einfluss eines von der Längsachse des RoRo- oder RoPax-Schiffs abweichenden - - The propeller shafts are each arranged at an acute angle to the longitudinal axis of the ship, with the propeller shafts running approximately from the center of the ship outwards (towards the respective side of the ship) and deviating from the longitudinal axis of the RoRo or RoPax ship. In particular, each propeller shaft runs outwards to the side of the RoRo or RoPax ship to which the associated two-stroke engine is offset. This creates an angle between the propeller shafts which, from a hydrodynamic point of view, should preferably be kept small, particularly preferably < 5°. This can easily be achieved by making the distance between the propellers and the two-stroke engines connected by means of the propeller shafts as large as possible. In particular, the two-stroke engines are preferably arranged in the center of the ship in relation to the longitudinal axis, particularly preferably towards the bow, so that the influence of a propeller shaft deviating from the longitudinal axis of the RoRo or RoPax ship is - -
Propellerwinkels gering bleibt. Bei einer starren Anordnung jeweils zwischen Zeitaktmotor, Propellerwelle und Propeller ist es in diesem Fall also erforderlich, dass die Längsachsen der Zweitaktmotoren nicht parallel, sondern ebenfalls in einem Winkel zueinander ausgerichtet sind. propeller angle remains low. In this case, with a rigid arrangement between the two-stroke engine, propeller shaft and propeller, it is therefore necessary that the longitudinal axes of the two-stroke engines are not parallel but also aligned at an angle to each other.
Der jeweils von den Propellerwellen zur Längsachse des RoRo- oder RoPax-Schiffs eingenommene spitze Winkel ist bevorzugt identisch ausgebildet, sodass der hierfür erforderliche Versatz der Zweitaktmotoren entlang der Längsachse des RoRo- oder RoPax- Schiffs zugleich ausreichend Platz bietet. The acute angle formed by the propeller shafts to the longitudinal axis of the RoRo or RoPax vessel is preferably identical, so that the required offset of the two-stroke engines along the longitudinal axis of the RoRo or RoPax vessel also provides sufficient space.
Nach einer weiteren bevorzugten Ausgestaltung weisen die Zweitaktmotoren identische Leistungsparameter auf, sind also im Wesentlichen identisch, d.h. baugleich bzw. vom selben Typ. Speziell weisen die Zweitaktmotoren bevorzugt dieselben Abmessungen auf. According to a further preferred embodiment, the two-stroke engines have identical performance parameters, i.e. are essentially identical, i.e. of the same construction or of the same type. In particular, the two-stroke engines preferably have the same dimensions.
Insbesondere sind die Zweitaktmotoren nach einer weiteren bevorzugten Ausgestaltung in voneinander abgeschotteten Abteilungen angeordnet. Die Abteilungen sind speziell als getrennt voneinander ausgebildete Maschinenräume ausgebildet, wobei jeder Zweitaktmotor (im Notfall) von dem anderen Zweitaktmotor unabhängig betrieben werden kann. Die Trennung der Abteilungen erfolgt im einfachsten Fall über eine als Schott ausgebildete Trennwand, die insbesondere als Brandschott ausgebildet ist. Speziell sind alle die jeweilige Abteilung ausbildenden Wände, einschließlich Decken und Boden, als Schott ausgebildet, sodass selbst bei geringem Platzbedarf eine hohe Ausfallsicherheit des RoRo- oder RoPax- Schiffs geschaffen wird. In particular, according to a further preferred embodiment, the two-stroke engines are arranged in compartments that are separated from one another. The compartments are specifically designed as separate engine rooms, whereby each two-stroke engine can be operated independently of the other two-stroke engine (in an emergency). In the simplest case, the compartments are separated by a partition wall designed as a bulkhead, which is designed in particular as a firewall. In particular, all walls forming the respective compartment, including the ceiling and floor, are designed as bulkheads, so that the RoRo or RoPax ship is highly fail-safe even when space is limited.
Die Erfindung wird im Folgenden anhand eines in den beigefügten Zeichnungen dargestellten, besonders bevorzugt ausgestalteten Ausführungsbeispiels näher erläutert. Es zeigen: The invention is explained in more detail below with reference to a particularly preferred embodiment shown in the accompanying drawings. They show:
Fig. 1 einen Längsschnitt eines bevorzugten Ausführungsbeispiels eines erfmdungsgemäßen RoRo- oder RoPax-Schiffs; Fig. 1 is a longitudinal section of a preferred embodiment of a RoRo or RoPax ship according to the invention;
Fig. 2 eine Draufsicht auf das in Fig. 1 gezeigte Ausführungsbeispiel auf Höhe derFig. 2 is a plan view of the embodiment shown in Fig. 1 at the level of the
Zweitaktmotoren; und Fig. 3 einen Querschnitt durch das zuvor gezeigte RoRo- oder RoPax-Schiff im Bereich der Zweitaktmotoren. two-stroke engines; and Fig. 3 shows a cross-section through the previously shown RoRo or RoPax ship in the area of the two-stroke engines.
Fig. 1 zeigt einen Längsschnitt eines bevorzugten Ausführungsbeispiels eines erfmdungsgemäßen RoRo- oder RoPax- Schiffs. Insbesondere zeigt Fig. 1 ein RoRo- oder RoPax-Schiff 10 mit zwei langsamlaufenden Zweitaktmotoren 20, 20', die in Längsrichtung des RoRo- oder RoPax-Schiffs 10 hintereinander und - wie in der in Fig. 2 dargestellten Draufsicht klar zu erkennen ist - quer zur Längsachse des RoRo- oder RoPax-Schiffs 10 versetzt angeordnet sind, wobei jeder Zweitaktmotor 20, 20' mittels jeweils einer Propellerwelle 30, 30' mit jeweils einem heckseitig angeordneten Schiffspropeller 40, 40' verbunden ist. Es ist deutlich zu erkennen, dass der eine Zweitaktmotor 20' mit dem einen Schiffspropeller 40' mittels einer Propellerwelle 30' verbunden ist, die länger als die den anderen Zweitaktmotor 20 mit dem anderen Schiffspropeller 40 verbindende Propellerwelle 30 ist. Fig. 1 shows a longitudinal section of a preferred embodiment of a RoRo or RoPax ship according to the invention. In particular, Fig. 1 shows a RoRo or RoPax ship 10 with two slow-running two-stroke engines 20, 20', which are arranged one behind the other in the longitudinal direction of the RoRo or RoPax ship 10 and - as can be clearly seen in the plan view shown in Fig. 2 - offset transversely to the longitudinal axis of the RoRo or RoPax ship 10, wherein each two-stroke engine 20, 20' is connected by means of a propeller shaft 30, 30' to a ship propeller 40, 40' arranged at the rear. It can be clearly seen that one two-stroke engine 20' is connected to one ship's propeller 40' by means of a propeller shaft 30' which is longer than the propeller shaft 30 connecting the other two-stroke engine 20 to the other ship's propeller 40.
Die Zweitaktmotoren 20, 20', bei denen es sich im Ausführungsbeispiel um Zweitaktmotoren desselben Typs handelt, sind dabei bevorzugt in (nicht dargestellten) voneinander abgeschotteten Abteilungen angeordnet, sodass sichergestellt ist, dass ein Maschinenschaden des einen Zweitaktmotors 20, 20' nicht auf den anderen Zweitaktmotor 20, 20' übergreifen kann und das RoRo- oder RoPax-Schiff 10 manövrierfähig bleibt. The two-stroke engines 20, 20', which in the embodiment are two-stroke engines of the same type, are preferably arranged in compartments (not shown) that are separated from one another, so that it is ensured that an engine failure of one two-stroke engine 20, 20' cannot spread to the other two-stroke engine 20, 20' and the RoRo or RoPax ship 10 remains maneuverable.
Die Propellerwellen 30, 30', die speziell gegenläufig drehend eingerichtet sind, sind - wie aus Fig. 2 ersichtlich - jeweils in einem spitzen Winkel zur Längsachse des RoRo- oder RoPax- Schiffs 10 angeordnet, wobei der jeweils von den Propellerwellen 30, 30' zur Längsachse des RoRo- oder RoPax-Schiffs 10 eingenommene spitze Winkel im Wesentlichen identisch ist. The propeller shafts 30, 30', which are specifically designed to rotate in opposite directions, are - as can be seen from Fig. 2 - each arranged at an acute angle to the longitudinal axis of the RoRo or RoPax ship 10, wherein the acute angle taken by the propeller shafts 30, 30' to the longitudinal axis of the RoRo or RoPax ship 10 is essentially identical.
Fig. 3, die einen Querschnitt durch das zuvor gezeigte RoRo- oder RoPax-Schiff 10 im Bereich der Zweitaktmotoren darstellt, veranschaulicht, dass die von den in Längsrichtung des RoRo- oder RoPax-Schiffs 10 hintereinander angeordneten Zweitaktmotoren 20, 20' in einer Richtung quer zur Längsrichtung des RoRo- oder RoPax-Schiffs 10 eingenommene Breite geringer als die doppelte Breite eines Zweitaktmotors 20, 20' ist. Somit kann eine platzsparende Anordnung der Zweitaktmotoren 20, 20' mit nur geringem Einfluss auf die Ladekapazität bezüglich des Frachtguttransports und der Personenbeförderung erreicht werden. Insbesondere ist aus Fig. 3 ersichtlich, dass die im Maschinenschacht angeordneten Zweitaktmotoren 20, 20' vertikal in das Freiborddeck des RoRo- oder RoPax-Schiffs 10 erstrecken, dabei auf dem Freiborddeck jedoch nur einen Laderaum in einer Breite von zwei bis drei LKW-F ahrzeugspuren in Anspruch nehmen. Fig. 3, which shows a cross-section through the RoRo or RoPax ship 10 shown above in the area of the two-stroke engines, illustrates that the width taken up by the two-stroke engines 20, 20' arranged one behind the other in the longitudinal direction of the RoRo or RoPax ship 10 in a direction transverse to the longitudinal direction of the RoRo or RoPax ship 10 is less than twice the width of a two-stroke engine 20, 20'. A space-saving arrangement of the two-stroke engines 20, 20' can thus be achieved with only a minor influence on the loading capacity with regard to the transport of freight and passengers. In particular, it can be seen from Fig. 3 that the two-stroke engines 20, 20' arranged in the engine shaft extend vertically into the freeboard deck of the RoRo or RoPax vessel 10, but only take up a cargo space on the freeboard deck with a width of two to three truck lanes.
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102023115661.6 | 2023-06-15 | ||
| DE102023115661.6A DE102023115661A1 (en) | 2023-06-15 | 2023-06-15 | seagoing vessel with two two-stroke propulsion engines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024255959A1 true WO2024255959A1 (en) | 2024-12-19 |
Family
ID=91580748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2024/100506 Ceased WO2024255959A1 (en) | 2023-06-15 | 2024-06-05 | Roro or ropax ship having two two-stroke drive engines |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE102023115661A1 (en) |
| WO (1) | WO2024255959A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2026082752A1 (en) * | 2024-10-18 | 2026-04-23 | Bassoe Technology Ab | A marine vessel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2314370A (en) * | 1941-01-16 | 1943-03-23 | Bow Arch Corp | Marine propulsion |
| CN105730603A (en) * | 2016-01-05 | 2016-07-06 | 上海船舶研究设计院 | Stern structure for internal rotation double-paddle ship |
| AU2011286173B2 (en) * | 2010-08-06 | 2017-04-13 | Austal Ships Pty Ltd | Gaseous fuel powered vessel |
| WO2018138941A1 (en) * | 2017-01-25 | 2018-08-02 | 三菱重工業株式会社 | Ship propulsion device and ship |
| DE102020203672B3 (en) * | 2020-03-23 | 2021-06-17 | Thyssenkrupp Ag | Watercraft with a redundant propulsion system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2729182A (en) | 1950-06-03 | 1956-01-03 | Giovanni B Tommasi | Ship's hull having forked canal in bottom |
-
2023
- 2023-06-15 DE DE102023115661.6A patent/DE102023115661A1/en active Pending
-
2024
- 2024-06-05 WO PCT/DE2024/100506 patent/WO2024255959A1/en not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2314370A (en) * | 1941-01-16 | 1943-03-23 | Bow Arch Corp | Marine propulsion |
| AU2011286173B2 (en) * | 2010-08-06 | 2017-04-13 | Austal Ships Pty Ltd | Gaseous fuel powered vessel |
| CN105730603A (en) * | 2016-01-05 | 2016-07-06 | 上海船舶研究设计院 | Stern structure for internal rotation double-paddle ship |
| WO2018138941A1 (en) * | 2017-01-25 | 2018-08-02 | 三菱重工業株式会社 | Ship propulsion device and ship |
| DE102020203672B3 (en) * | 2020-03-23 | 2021-06-17 | Thyssenkrupp Ag | Watercraft with a redundant propulsion system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2026082752A1 (en) * | 2024-10-18 | 2026-04-23 | Bassoe Technology Ab | A marine vessel |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102023115661A1 (en) | 2024-12-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE2725060A1 (en) | Amphibious cargo pontoon, partic. for containers - comprises dismantlable units rigidly coupled by dumb=bell keys | |
| DE102018112512A1 (en) | Container lashing bridge | |
| WO2024255959A1 (en) | Roro or ropax ship having two two-stroke drive engines | |
| DE2616885B2 (en) | Hull | |
| EP1660367A1 (en) | Container ship | |
| DE2303381C2 (en) | ship | |
| EP1914160A2 (en) | Method for converting a single-hull tanker into a double-hull tanker | |
| DE3119116A1 (en) | "CARGO SHIP" | |
| EP0319934B1 (en) | Navy relief ship | |
| DE19616864C2 (en) | Seaworthy ferry for passengers and vehicles with a matching jetty | |
| DE3119765A1 (en) | Freighter consisting of several floating bodies coupled alongside one another | |
| DE29908430U1 (en) | Fast seagoing ship | |
| EP3594099B1 (en) | Method for extending a ship and extended ship | |
| DE730608C (en) | Watercraft for the transport of bulk goods, in particular liquids | |
| DE69706078T2 (en) | Seaworthy lighter and thrust unit with such a lighter | |
| WO2008151712A1 (en) | Barge transport vessel | |
| DE2049233A1 (en) | Ship train | |
| DE2156511C3 (en) | Facility for the sea transfer of inland cargo ships | |
| DE2212116B2 (en) | Method and device for connecting a push ship to a cargo ship to form a push unit | |
| DE1937425A1 (en) | Tanker | |
| DE364498C (en) | Ship consisting of wedge-shaped crimped floating bodies | |
| DE7602667U1 (en) | AS A LESSLY TRAINED WATER TRANSPORT VEHICLE | |
| DE102020106794A1 (en) | SHIP | |
| DE102013108591A1 (en) | shipborne | |
| DE202006004278U1 (en) | Boat used as a catamaran comprises longitudinal floats connected together by hinges arranged with their pivoting axles at right angles to the floats and a bridging support made from support sections |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 24733092 Country of ref document: EP Kind code of ref document: A1 |