EP0328720B1 - Eisbrechendes Schiff - Google Patents

Eisbrechendes Schiff Download PDF

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Publication number
EP0328720B1
EP0328720B1 EP88108794A EP88108794A EP0328720B1 EP 0328720 B1 EP0328720 B1 EP 0328720B1 EP 88108794 A EP88108794 A EP 88108794A EP 88108794 A EP88108794 A EP 88108794A EP 0328720 B1 EP0328720 B1 EP 0328720B1
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EP
European Patent Office
Prior art keywords
ship
hull
projecting
components
ice
Prior art date
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Expired - Lifetime
Application number
EP88108794A
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German (de)
English (en)
French (fr)
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EP0328720A1 (de
Inventor
Jens-Holger Dipl.-Ing. Hellmann
Richard Dipl.-Ing. Hölscher
Hermann J. Dipl.-Ing. Janssen
Alfred Kleemann
Karl-Heinz Dr.-Ing. Rupp
Joachim Dr.-Ing. Schwarz
Günter Dipl.-Ing. Varges
Heinrich Dr.-Ing. E.H. Waas
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Thyssen Nordseewerke GmbH
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Thyssen Nordseewerke GmbH
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Application filed by Thyssen Nordseewerke GmbH filed Critical Thyssen Nordseewerke GmbH
Publication of EP0328720A1 publication Critical patent/EP0328720A1/de
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    • 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
    • B63B35/08—Ice-breakers or other vessels or floating structures for operation in ice-infested waters; Ice-breakers, or other vessels or floating structures having equipment specially adapted therefor
    • B63B35/12—Ice-breakers or other vessels or floating structures for operation in ice-infested waters; Ice-breakers, or other vessels or floating structures having equipment specially adapted therefor having ice-cutters
    • 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
    • B63B35/08—Ice-breakers or other vessels or floating structures for operation in ice-infested waters; Ice-breakers, or other vessels or floating structures having equipment specially adapted therefor

Definitions

  • the invention relates to an ice-breaking ship with devices for improving maneuverability with fixed or movable parts of the ship which are arranged on the side of the hull and protrude laterally from the sides of the ship and form the widest part of the underwater ship.
  • ice breakers with reactors or cutting edges in order to improve the ice breaking properties.
  • These reamer or cutting edges are profiled bodies which extend in the longitudinal direction of the ship and are superbly arranged laterally on the hull side wall surfaces.
  • icebreaker foreshifts the width of which is greater than the width of the part of the ship adjoining the foreshore, can only be used if the maximum load-bearing capacity and / or stability, which is determined by the width, specified by the fairway limitation, can be determined, can be waived.
  • a guide device for ice floes on ships for cruising in icy arctic waters, which is movably fixed on both sides of the bow, is known from DE-A-2 212 145.
  • This guide device is fastened in the area between the stern and the front shoulder at about the level of the underside of the expected ice sheet on the bow.
  • she has an ice floe guiding down to the side Contour on.
  • Such a guiding device is intended to ensure that the ice floes are only pressed down to a depth just below the solid ice sheet.
  • diving work is to be saved, which is approximately proportional to the difference between the ice sheet and the draft of the ship.
  • the ice guiding device on both sides of the ship are arranged so that their position and contour are suitable for rejecting ice floes downwards and to the side.
  • the ice guiding devices designed as fin-like flaps are articulated to the hull about an axis lying approximately horizontally in the outer skin, the adjustment being carried out by means of hydraulic piston-cylinder units which are anchored in the interior of the hull and connected to the flaps or to guiding surfaces designed in another way are.
  • the flaps forming the guide surfaces on the hull are articulated approximately at the level of the lower edge of the ice, so that they can be folded against the flow direction in use, so that the ice floes slide along them.
  • the height of the flaps should be selected according to the expected ice thickness.
  • the flaps for travel in free water can be completely submerged in niches of the hull and, if necessary, covered.
  • this ice guiding device which consists of pivotable flaps, is not given when the ship is moving backwards, because the known ice guiding device is used exclusively to drain ice floes, but not to break ice floes from the ice or to break them Cut ice floes into smaller pieces so that the propeller area is kept ice-free.
  • the flaps of the ice guiding device are arranged on the ship's outer skin so that in the swung-out state, ice floes hitting the flaps from the front can damage the flaps and the flap pivoting mechanism, so that such an ice guiding device can only develop its full effect when the ship is moving slowly is located, but this often leads to difficulties when ships are driving in a convoy and due to the slow speed of the ships, the trained ice channel closes behind the ships, so that the re-frozen ice must first be broken, which requires icebreakers.
  • the invention solves the problem of creating an icebreaking ship of the type mentioned, the maneuverability of which is improved when traveling in ice-covered water, both when driving forwards and when driving backwards.
  • broken ice floes should also be broken up into smaller pieces so that the propeller area is kept ice-free where possible and at least large ice floes cannot get into the propeller area.
  • the front and / or rear sides of these projecting, fixed ship parts preferably have honontal steps in the frame contours in the above and / or underwater area of the water lines.
  • the protruding, fixed parts of the ship can be inserted or removed over a part or the entire area due to different floating positions.
  • the frame contour of the projecting, fixed ship parts consisting of one or more steps is preferably provided with sharp-edged, rounded or beveled edges.
  • the parts of the ship formed on the ice-breaking ship are designed as reamer or cutting edges and can be retracted into corresponding recesses or recesses in the hull by appropriately trained, suitable devices in order to pass through narrow passage points, such as locks , retractable, retractable, swiveling or the like. So that the reamer or cutting edges can be extended into their icebreaking operating position after leaving narrow driving positions.
  • An ice-breaking ship designed in this way fulfills the requirement, namely the breaking of a fairway in an open ice surface, wider than the following ship, using the width of the lock if the width of the icebreaker head is reduced before entering the lock and restored after leaving .
  • the outer edges of the cross sections of the reactors are sharp-edged, rounded or beveled.
  • the projecting, movable ship parts are arranged in recesses in the hull and can be moved from the recesses into desired different operating positions by means of hydraulic, electrical, mechanical or other types of suitable movement devices, the projecting, movable ship parts preferably being flush with the in the retracted, folded or retracted state Outer skin are final.
  • the projecting, movable ship parts are pivotably articulated on the hull side walls about a preferably approximately horizontal axis, or they are pivotable about axes oriented essentially in the longitudinal direction of the ship.
  • the projecting, movable ship parts can be arranged stationary or movable several times along the hull.
  • the arrangement of protruding, movable parts of the ship can be carried out both in the bow and in the stern. An arrangement in the fore and aft is also possible.
  • the invention provides an embodiment according to which the shape of the stern of the icebreaking ship is designed so that when traveling backwards in a closed ice cover, at least three different fracture zones occur in the ice cover, the two outer zones of which have a uniform fracture pattern, which is similar due to a known shape of the bow Design of the stern of the ship is generated, while the middle break zone area, preferably that in which propulsion and control elements are arranged in the stern, by differently designing the middle stern area of the shape of the stern when reversing at least two approximate longitudinal fractures are separated from the lateral fracture zones in the ice sheet.
  • the central stern area of the hull is shaped in the forward direction of travel behind the propulsion and control elements in angular structures that preferably lie in the longitudinal direction of the ship and protrude, which dissolve the central strip, which is separated from the solid ice sheet when reversing, into several small ice floes that are easier to separate than large floes from let the propulsion organs be processed.
  • the protruding, angular structures of the stern surface are arranged in the longitudinal direction of the ship behind a known rear apron, which clears away the broken ice from the area of the propulsion and control elements when reversing.
  • the middle rear area breaks the ice, clears the broken clods downwards and only then is the ice in the adjacent break zone conveyed downwards from the rear.
  • the central rear area is shaped in such a way that broken ice is pushed by it under the ice broken by the side zones of the rear.
  • the frame contours and / or waterline contours of the protruding central rear area are wave-shaped, zig-zag or stair-shaped.
  • edges of the angular structures are sharp-edged, bevelled or rounded.
  • the icebreaking ship is designed in such a way that the ship consists of two articulated hull parts which are connected to tensioning devices via at least one elastic molded body, such as a fender or the like, with a swiveling device for swiveling the longitudinal axes of the two Halves of the ship around the vertical axis of the ship is provided.
  • the recesses in the hull for the movable ship parts and / or the movable ship parts themselves are heatable. In addition, there is also the possibility of heating the protruding, fixed parts of the ship.
  • the fore section of a hull 10 of an ice-breaking ship designated 11, has a pontoon-shaped fore section 12, to which a V-shaped part of the underwater fore section connects.
  • the front section of the pontoon-shaped fore section 12 consists of a surface that is inclined forward.
  • the ship according to FIG. 1 has an end surface 13 which is inclined forward and upward over a substantial part of the ship's width in the bow.
  • This end face 13 is delimited at its outer lateral edges by two side edges 14 which are partially curved in the longitudinal direction and which lie in the hull or protrude laterally from the hull above it.
  • the end face 13 is increasingly arched or buckled transversely downwards from the front to the rear.
  • the underside of the frames 15 between the two side edges 14 is from the point of the length of the ship at which the end face 13 in the midships plane 16 reaches the ship's bottom 17 until at least to the main hull plane 18 it decreases towards the rear arched or buckled transversely.
  • the side edges 14 continue over a larger part of the length of the ship as a bead-like thickening 19 to the rear. These bead-like thickenings 19 open out to the rear into lateral boundaries of propeller tunnels.
  • the side edges 14 of the pontoon-shaped fore section 12 of the hull 10 are in the region of the fore 11 with laterally protruding from the hull side walls 21, 22, icebreaking ship parts 130, such as reamer, cutting edges or the like. provided, which can be fixed or movable and which will be discussed in more detail below.
  • These reactors are a side overhang beyond the main frame profile of the hull 10.
  • the front surface 13 which is inclined upward to the front can merge rearward into an underwater fore section with V-shaped sloping frames at the bottom.
  • the end face In its end area, the end face is then slightly bent in the middle, thus creating a gradual and not too steep transition to the actual underwater part of the ship with V-shaped sloping frames below.
  • the frames Further to the rear, the frames have a trapezoidal shape, the contours of which are formed by floor lines or the ship's floor 17 and subsequent oblique side lines, which are then inclined more steeply than the previous V frames.
  • the side edges 14 are arranged in the fore-ship area at least with a section below the construction water line 20 in two lateral boundary planes lying parallel to the midships plane 16 in such a way that they describe the widest point of the underwater ship shape overall.
  • the front surface 13, which is inclined upward at the front, has lower boundaries of the frames which run approximately horizontally transversely in the middle region of its longitudinal extent, close, in particular below the construction water line 20, as a result of which the end surface 13 forms at least approximately a plane in this region.
  • the side edges 14 extend forward over the end face 13 to above the construction water line 20 and merge into two catamaran-like forwards, towards which the shape of the ship recedes in the area of the midships level 16 and rises more steeply than the two forwards 23.
  • the shape of the ship is formed at least above the longitudinal extent of the side edges by outwardly hollow or concave frames.
  • the stern of the ship is indicated at 25.
  • differently designed foreship shapes and stern shapes of hulls of icebreaking ships can also be provided with the laterally projecting ship parts 130.
  • Each hull side wall 21, 22 has a reamer 30 as an icebreaking ship part 130 protruding from the ship side, wherein a cutting edge can also be provided on the hull instead of a reaming device.
  • the cutting edges provided on both sides of the ship then protrude laterally beyond the width of the ship under water and form the widest part of the area of the hull that comes into contact with ice.
  • Embodiments of hulls with reactors 30 are described below, wherein the hulls can also be provided with cutting edges.
  • the Reamer 30 are arranged in the hull side walls 21, 22 so that the width of the hull or the hull in its widest area, that is, in the foredeck area in which the Reamer 30 are arranged, by retracting, pulling in, swiveling, pulling up or the like .
  • the Reamer 30 is designed to be reduced to a smaller width, preferably to the width of the ship part, which adjoins the ship part carrying the Reamer 30 during the operation of the ship, it being assumed that the widest part of the ship is that of the hull which is in the
  • the hull 10 shown in FIG. 1 forms the foredeck 11 with reactors 30 that are laterally exhibited or can be deployed.
  • the widest part of the ship is always formed in those areas in which the reamer 30 are arranged and can be extended laterally.
  • the reamer 30 are designed as profile bodies and are arranged in recesses 40 in the hull side walls 21, 22 of the hull 10.
  • a recess 40 is formed in the hull side wall 21, which also applies to the hull side wall 22, in which the reamer 30 is arranged, which is designed as a rod-shaped profile body or solid is.
  • the recess 40 extends in the longitudinal direction of the hull and has a length which corresponds to the length of the reamers 30.
  • the cross-sectional profile of the recess 40 corresponds to the cross-sectional profile of the reamer 30, so that when the reamer 30 is inserted into its corresponding recess 40, it comes to lie completely in the recess and lies within the plane formed by the hull side wall 21 or 22.
  • Hydraulic, electrical, mechanical or other suitable movement devices 50 are arranged in the interior of the hull 10 for the retraction and retraction or for the pivoting in and out or for the folding in or out of each reamer 30 in such a way that the reamers can be operated properly 30 is guaranteed.
  • these actuating devices 50 are designed as hydraulic working cylinders, but suitable, differently designed actuating devices can also be provided.
  • the reamer 30 is designed such that, when the reamer is arranged in its recess 40, the outer reamer profile comes to lie in the plane formed by the hull side wall 21, so that over the plane formed by the hull side wall 21 the reamer 30 does not protrude, so that the greatest width of the hull or its foredeck 11 is predetermined by the two hull side walls 21, 22 (FIG. 3).
  • the reamer 30 has a cross-sectional profile in the form of a right-angled triangle which is preferred by many possibilities and is on the hull side wall 21 with its upper region at 28 about an approximately horizontal pivot axis pivotably articulated on the hull side wall 21, the course of the pivot axis 28 corresponding to the inclination of the foredeck 11 formed in each case.
  • the reamer 30 on the two side walls 21, 22 of the hull 10 can be pivoted about axes oriented essentially in the longitudinal direction of the ship.
  • the arrangement of the reamer 30 in its recess 40 is such that, in the pivoted-in state, the side 30a of the cross-sectional profile of the reamer forming the base surface lies in the plane formed by the hull side wall surface when the reamer 30 is pivoted into its recess 40 (FIG. 3).
  • the icebreaking ship In this swiveled-in position of the reamer 30 and thus also of the reamer on the other hull side, the icebreaking ship is prepared for passage through open water and locks.
  • the reamer 30 assumes the extended position shown in FIG. 1.
  • the recess 40 also has a cross-sectional profile that corresponds to the cross-sectional profile of the reamer 30, so that the reamer 30 can be pivoted completely into the recess 40.
  • the outer edges 31 of the reamer 30 are sharp-edged, rounded or beveled in the frame cross-section (FIG. 2).
  • the rounded outer edge shape of the reamer 30 is indicated at 31a.
  • the projecting movable ship parts 130 are arranged in a stationary or movable manner several times along the hull 10, in the latter case the reamer 30 being guided and held in longitudinal guides on the hull side walls 21, 22, the displacement using hydraulic, electrical, mechanical or other suitable suitable devices, not shown in the drawing.
  • a reamer 30 movable on each hull side wall 21, 22 of the hull 10 along the hull; it can however, several reactors 30 can also be arranged one behind the other on each ship side wall 21 or 22, which are then movable along the hull 10.
  • the movable arrangement of the above movable, that is to say swiveling in and out ship parts 130, such as reamer 30 or the like, along the hull enables the setting of the reamer 30 to the most effective operating state.
  • the reamer 30 can be pivoted about an axis 28 lying in the upper region of the hull side wall 21, there is also the possibility according to FIG. 4 to arrange the reamer 30 in such a way that its pivot axis 28 is at the bottom Area of the hull side wall 21 is located.
  • the reamer 30 arranged in the hull side wall 21 has a shape which corresponds to the course of the frame contour indicated at 26. 5, the cut edge line is indicated at 27 and the lower cutting edge at 228 when the reamer 30 is pivoted downward in the arrow direction X from its raised position shown in FIG. 5.
  • the profile of the reamers 30 in its lower region is shown in FIG. 6.
  • the area of the extendable reamer 30 is identified by A.
  • Another area indicated at B denotes an area of shape adaptation, this area being able to be designed as a correspondingly designed rear section 40 of the reamer 30, in which case the Recess in the hull side wall corresponds to the entire length of the reamers 30, and there is also the possibility of forming or shaping the shape-matching area following the reamer 30 on the hull side wall 21, but without the width of the hull side walls 21, 22 in Area of the reamer 30 is thereby enlarged.
  • the ice cover is indicated at 200.
  • the reamer 30 is formed in two parts in the hull side wall 21 and consists of a movable part 30a and a fixed part 30b, which despite its fixed arrangement is designed such that both reamer parts 30a, 30b result in a closed profile .
  • the movable part 30a of the reamer 30 is articulated at 28a on the fixed part 30b or can be pivoted about an axis provided on the hull.
  • the movable reamer part 30a can be pivoted in the direction of the arrow X1.
  • recesses 40 for receiving reactors 30 are also provided in the hull side walls 21, 22, these recesses 40 being formed by retracted sections of the fore ship with a corresponding foreship design, for example if the hull has a spoon-bow shape .
  • Such a spoon-bow shape is indicated in FIGS. 8 and 9.
  • the reactors 30 are on the two hull side walls 21, 22,
  • the reamer 30 is designed as a profile body, can be extended and retracted, by means of the actuating device 50 already described above.
  • the retractor 30 is extended and retracted transversely to the longitudinal direction of the hull.
  • the retractable and extendable or retractable or foldable or retractable or pivotable arrangement and design of laterally projecting ship parts 130, such as reamer 30 or cutting edges, can be used wherever icebreaking ships have to be used to expose reamer or cutting edges and where by the side flaring will get a hull widening.
  • the reamer 30 can have a cross-sectional profile which extends uniformly over the entire length, the overall profile adapting to the shape of the hull side wall surface.
  • the reamer 30 can also be designed such that, in the laterally extended state, the reamer 30 merges into the hull side wall surfaces in their areas facing away from the bow of the ship, as shown in FIG. 11, with the possibility also being given in this embodiment to articulate the reamer 30 on one side at 28a on the hull side wall 21 or 22, so that lateral pivoting in and out in the direction of the arrow X2 is possible by means of corresponding actuating devices 50.
  • the recess 40 receiving the reamer 30 in the hull side wall 21 or 22 is then designed accordingly.
  • heating devices or flushing systems or flushing devices are provided, via which, for example, pressurized water or heated pressurized water into the cavities delimited by the recesses 40 through outlet openings , Outlet nozzles or the like. in the walls delimiting the recesses 40 are provided.
  • Such a flushing system is indicated schematically in FIG. 10.
  • the wall delimiting the recesses 40 for receiving the reamer 30 is indicated at 45.
  • In this wall there are a number of outlet openings, outlet nozzles or the like.
  • 81 are provided, which are connected via pressure water supply lines 82 to a pressure water generating device 80, which can be connected to a water heating device, not shown in the drawing.
  • Both the recesses 40 in the hull 10 for the movable ship parts 130 and the movable ship parts 130 themselves are heatable. If the laterally projecting ship parts 130 are arranged fixed on the hull 10, which will be discussed in more detail below, then these almost standing laterally projecting ship parts can also be designed to be heatable.
  • laterally projecting ship parts are on the hull side walls 21, 22 of a hull, such as reamer or cutting edges, arranged in a fixed manner, these laterally projecting fixed ship parts being arranged in the same areas on the hull 10 in its forward area as described above for the laterally projecting, movable ship parts 130.
  • Each of the two projecting, fixed ship parts 230 and 235 formed on the hull side walls 21 and 22 has at least two kinks in the course of the waterline in its rear transition into the ship shape, the rear of the laterally projecting fixed ship part 230 lying below the normal swimming water line Point up after the ship's stern again up to the swimming water line (Fig. 12).
  • the frame contour of the rear of the fixed ship part 230 is preferably horizontal in the region of the water line (FIG. 14).
  • the laterally projecting fixed ship parts 230 are also designed as profile bodies (FIG. 12).
  • the front outer edge of the reamer 235 has the configuration shown in FIG. 13.
  • the laterally projecting fixed ship part 230 formed on the hull 10 consists of two individual ship parts, such as reactors 230a, 230b, arranged one behind the other.
  • this configuration is not limited to only two individual projecting fixed ship parts 230a, 230b, but there is also the possibility of a multiple arrangement of several individual laterally projecting fixed ship parts.
  • the individual laterally projecting fixed ship parts 230a, 230b are designed as profile bodies.
  • the front and / or rear sides of these projecting, fixed ship parts 230 or 230a, 230b preferably have horizontal steps in the frame contours in the above and / or underwater area of the water lines.
  • FIGS. 19 to 21 there is the possibility of to form a fixed ship part 230 in stages, as shown in FIGS. 19 to 21.
  • the individual stages are labeled 230c, 230d, 230e.
  • the ice cover indicated in FIGS. 14, 16, 17 and 21 is designated by 200.
  • protruding, fixed ship parts which are formed on both sides of the hull, are or are formed in a stationary manner on the hull, whereas the fixed ship parts 230 or 230a, 230b or 230c, 230d, 230e can also be arranged to be movable along the hull , regardless of whether it is a single projecting fixed ship parts 230 or a plurality of laterally projecting fixed ship parts arranged on each hull side wall.
  • the frame contour of the projecting fixed ship parts 230 is provided with sharp-edged, rounded or beveled edges. Such a beveled edge is indicated in FIG. 18 and designated 236.
  • the frame contour of the rear of the protruding, fixed ship parts 230 in the area of the water line is preferably horizontal, it is achieved that the broken ice floes slide up when the ship travels ahead.
  • the stern shape 125 of the hull 10 is designed such that at least three different fracture zones occur in the ice sheet when reversing in a closed ice sheet, the Both outer zones have a uniform fracture pattern, which is produced by a known fore-ship shape with a similar design of the stern sides, while the central fracture zone region, preferably that in which 25 propulsion and control elements 160 are arranged in the stern, by a different design of the central stern region 126 the stern shape 125 is separated from the lateral fracture zones in the ice cover by at least two approximate longitudinal fractures when reversing (FIGS. 24a, 27a and 30).
  • the angular structures at the stern 25 of the hull 10 are designated 140, 141, 142, while in FIG. 23 a skid is designated. 24, the mirror at the stern 25 of the hull 10 is designated 128.
  • the central stern area 126 of the hull 10 is shaped in the forward direction of travel behind the propulsion and control elements 160 in angular structures 140a, 141a, which preferably lie in the longitudinal direction of the ship and protrude, which separated the middle, when reversing from the solid ice sheet Dissolve strips in several smaller ice floes that are easier to process than large floes by the propulsion organs 160a (FIGS. 25 to 27 and 27a).
  • the hulls 10 shown in FIGS. 22 and 25 are provided with two propulsion and control elements 160.
  • the protruding angular structures 145 of the stern surface are arranged in the longitudinal direction of the ship behind a rear apron 148 known per se, which clears away the broken ice from the area of the propulsion and control members 160 when reversing.
  • the middle rear area first breaks the ice, then clears the broken clods downward and only then is the ice in the fracture zone located to the side conveyed downward from the rear 25.
  • the central rear area is preferably shaped in such a way that broken ice is pushed by it under the ice broken by the side zones of the rear 25.
  • the frame contours and / or waterline contours of the protruding central rear area 126 can be designed in the form of waves, zigzags or steps. Smooth or sawtooth-like longitudinal runners can be arranged on the central protruding rear region 126.
  • the edges of the angular structures 140, 141, 142 and 140a, 141a and 145 are sharp-edged, bevelled or rounded.
  • Hulls of an icebreaking ship can also be used for ships which consist of at least two hull parts 300, 301 which are connected to one another in an articulated manner, which are coupled together (Figs. 31 and 32).
  • the hull 10 consists of two hull parts 300, 301, but the number of hull parts is not limited to only two hull parts. There is also the possibility of articulated connection of several hull parts.
  • the hull part 300 is formed with an icebreaking foredeck 11, wherein on the ship side walls of the hull part 300 laterally projecting icebreaking ship parts 130 are arranged, which are used as reamer, cutting edges or the like. are formed, which preferably form the widest point of the underwater ship of the hull part 300.
  • protruding fixed ship parts 230 can also be provided, as described above.
  • the hull part 301 has a stern shape 125, which is designed so that when moving backwards in a closed ice cover, at least three different fracture zones occur in the ice cover, the two outer zones of which have a uniform fracture pattern, which is produced by a known foreship shape-like design of the stern sides , while the central fracture zone area, preferably that in which propulsion and control elements are arranged in the stern, is separated from the lateral fracture zones in the ice sheet by deviating the design of the central stern area of the shape of the stern when reversing through at least two approximate longitudinal fractures.
  • angular structures lying and protruding in the longitudinal direction of the ship are shaped and molded.
  • the two hull parts 300, 301 are over at least one elastic molded bodies 302, 302a connected to one another, two elastic molded bodies being provided according to FIG. 33.
  • Each elastic molded body 302 or 302a is designed, for example, as a fender.
  • the two hull parts 300, 301 are connected to one another via tensioning devices 303, this tensioning device 303 or the like consisting of a pulling rope. exists, which is biased between the two hull parts 300, 301.
  • the two hull parts 300, 301 are connected to one another via hydraulic pistons 304, 304a (FIG. 31).
  • the hydraulic pistons 304, 304a are arranged side by side, while the fenders of the elastic tensioning device 302, 302a are arranged one above the other (FIG. 33).
  • the hydraulic pistons 304, 304a are articulated on both sides of the two hull parts 300, 301 at 305 or are fastened by means of a Gardan suspension.
  • Niches or recesses 309 for receiving the fenders of the elastic molded bodies 302, 302a are formed on the opposite hull walls of the two hull parts 300, 301.
  • the hull part 301 can be designed, for example, as a tugboat.
  • the hydraulic pistons 304, 304a represent the swiveling device and serve to swivel the longitudinal axes of the two hull parts 300, 301 about the vertical axis of the ship.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Shovels (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Prevention Of Electric Corrosion (AREA)
  • Toys (AREA)
  • Cleaning Of Streets, Tracks, Or Beaches (AREA)
  • Auxiliary Methods And Devices For Loading And Unloading (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Earth Drilling (AREA)
  • Barrages (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Bridges Or Land Bridges (AREA)
  • Pivots And Pivotal Connections (AREA)
EP88108794A 1988-02-18 1988-05-27 Eisbrechendes Schiff Expired - Lifetime EP0328720B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8802053U DE8802053U1 (pl) 1988-02-18 1988-02-18
DE8802053U 1988-02-18

Publications (2)

Publication Number Publication Date
EP0328720A1 EP0328720A1 (de) 1989-08-23
EP0328720B1 true EP0328720B1 (de) 1992-09-02

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ID=6820774

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88108794A Expired - Lifetime EP0328720B1 (de) 1988-02-18 1988-05-27 Eisbrechendes Schiff

Country Status (12)

Country Link
US (1) US4942837A (pl)
EP (1) EP0328720B1 (pl)
JP (3) JP2656340B2 (pl)
KR (2) KR940007216B1 (pl)
CN (1) CN1028215C (pl)
CA (1) CA1301559C (pl)
DE (2) DE8802053U1 (pl)
FI (1) FI93812C (pl)
NO (1) NO172975C (pl)
PL (3) PL164206B1 (pl)
RU (1) RU2053922C1 (pl)
SU (1) SU1762746A3 (pl)

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DE4101034A1 (de) * 1991-01-16 1992-07-23 Thyssen Nordseewerke Gmbh Eisbrechendes schiff
FI94508C (fi) * 1991-03-18 1995-09-25 Masa Yards Oy Jäätä murtava laiva
FI912775A0 (fi) * 1991-04-04 1991-06-10 Insinoeoeritoimisto Lehtonen & Stamform foer fartyg.
US6712016B1 (en) 2002-09-06 2004-03-30 Polaris Industries Inc. Personal watercraft having ventilated sponsons
US6651579B1 (en) 2002-09-16 2003-11-25 Polaris Industries Inc. Personal watercraft having tuneable sponsons
US6807920B1 (en) 2002-12-03 2004-10-26 Polaris Industries Inc. Personal watercraft having adjustable angle sponsons
KR100977839B1 (ko) * 2007-10-25 2010-08-25 삼성중공업 주식회사 쇄빙선의 추진 시스템 및 이를 위한 쇄빙선 형상
NO20080956L (no) * 2008-02-05 2009-08-06 Moss Maritime As Isforsterket skip for boring og produksjon i arktiske farvann
DK177707B1 (da) * 2010-03-31 2014-03-24 Maersk Supply Service As Fremgangsmåde til brydning af is
EA022074B1 (ru) * 2010-03-31 2015-10-30 Мерск Сепплай Сервис А/С Ледокольное судно
RU2467912C2 (ru) * 2011-01-12 2012-11-27 Общество с ограниченной ответственностью "Газпром добыча шельф" Морской объект для эксплуатации в арктических условиях
CN103231780B (zh) * 2013-05-23 2015-08-12 中国船舶重工集团公司第七○二研究所 一种冰区工作船
ES2698627T3 (es) 2013-10-11 2019-02-05 Ulstein Design & Solutions As Embarcación que tiene una forma de casco mejorada
CN103979082B (zh) * 2014-05-06 2016-03-30 江苏海事职业技术学院 一种破冰船舶结构
KR200482986Y1 (ko) * 2014-11-18 2017-04-05 대우조선해양 주식회사 스퍼드캔용 점토 제거장치
CN105346683A (zh) * 2015-11-27 2016-02-24 胡益锋 一种快速连续破冰机构
US10793228B2 (en) 2016-12-02 2020-10-06 Polaris Industries Inc. Structure and assembly for recessed deck portion in pontoon boat
RU172029U1 (ru) * 2017-01-30 2017-06-26 Юрий Арсентьевич Чашков Ледокол с улучшенными характеристиками взламывания льда
KR101950005B1 (ko) * 2017-04-17 2019-02-20 (주)아이엠엔지니어링 포스맥에 기능성 코팅층을 형성하는 코팅방법
CN109094743B (zh) * 2018-09-19 2021-08-31 中船重工船舶设计研究中心有限公司 一种大型极地运输船构型
RU2731137C1 (ru) * 2019-05-29 2020-08-31 Федеральное государственное казенное военное образовательное учреждение высшего образования "Военный учебно-научный центр Военно-Морского Флота "Военно-морская академия им. Адмирала Флота Советского Союза Н.Г. Кузнецова" Плавучий пирс
US11192610B2 (en) 2019-10-30 2021-12-07 Polaris Industies Inc. Multiple chine pontoon boat
CN112478070B (zh) * 2020-12-04 2022-03-08 江苏科技大学 一种应用于极地船舶球鼻首的破冰装置
CN113212712B (zh) * 2021-05-10 2022-04-22 江苏科技大学 一种具有自破冰功能的极区潜体舱口盖

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JPS6223896A (ja) * 1985-07-23 1987-01-31 Nippon Kokan Kk <Nkk> 氷海船舶
JPS6220990U (pl) * 1985-07-23 1987-02-07

Also Published As

Publication number Publication date
SU1762746A3 (ru) 1992-09-15
CN1028215C (zh) 1995-04-19
JPH01249587A (ja) 1989-10-04
CN1035468A (zh) 1989-09-13
NO883731L (no) 1989-08-21
PL164405B1 (pl) 1994-07-29
FI93812B (fi) 1995-02-28
FI884246A (fi) 1989-08-19
PL164327B1 (pl) 1994-07-29
US4942837A (en) 1990-07-24
NO883731D0 (no) 1988-08-19
RU2053922C1 (ru) 1996-02-10
PL164206B1 (pl) 1994-06-30
EP0328720A1 (de) 1989-08-23
DE3874318D1 (de) 1992-10-08
JP2847036B2 (ja) 1999-01-13
JP2847035B2 (ja) 1999-01-13
KR940007216B1 (ko) 1994-08-10
FI884246A0 (fi) 1988-09-15
KR940007217B1 (ko) 1994-08-10
CA1301559C (en) 1992-05-26
JPH07237584A (ja) 1995-09-12
FI93812C (fi) 1995-06-12
DE8802053U1 (pl) 1989-06-15
JPH07237585A (ja) 1995-09-12
KR890012857A (ko) 1989-09-19
NO172975C (no) 1993-10-06
JP2656340B2 (ja) 1997-09-24
NO172975B (no) 1993-06-28
PL277466A1 (en) 1989-09-04

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