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NL2021748B1 - Dredging vessel with a pulling cable in its shipping direction - Google Patents

Dredging vessel with a pulling cable in its shipping direction Download PDF

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Publication number
NL2021748B1
NL2021748B1 NL2021748A NL2021748A NL2021748B1 NL 2021748 B1 NL2021748 B1 NL 2021748B1 NL 2021748 A NL2021748 A NL 2021748A NL 2021748 A NL2021748 A NL 2021748A NL 2021748 B1 NL2021748 B1 NL 2021748B1
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NL
Netherlands
Prior art keywords
dredging
area
hull
installation
drum
Prior art date
Application number
NL2021748A
Other languages
Dutch (nl)
Inventor
Christoffel Van Gool Vincent
Luuc Visch Guido
Original Assignee
Boskalis Bv Baggermaatschappij
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Filing date
Publication date
Application filed by Boskalis Bv Baggermaatschappij filed Critical Boskalis Bv Baggermaatschappij
Priority to NL2021748A priority Critical patent/NL2021748B1/en
Application granted granted Critical
Publication of NL2021748B1 publication Critical patent/NL2021748B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H15/00—Marine propulsion by use of vessel-mounted driving mechanisms co-operating with anchored chains or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/8858—Submerged units
    • E02F3/8875—Submerged units pulled or pushed
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/06—Floating substructures as supports
    • E02F9/062—Advancing equipment, e.g. spuds for floating dredgers
    • E02F9/065—Advancing equipment, e.g. spuds for floating dredgers characterised by the use of lines with anchors and winches

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention. relates to a dredging 'vessel for dredging jíl a defined dredging area under water, wherein the dredging vessel comprises a hull, a pulling cable installation for commuting the hull in a shipping direction between the defined dredging area and a discharge area remote from the defined dredging area, a trailing suction dredging installation having a trailing suction head suspended from the hull for dredging soil in the defined dredging area in a trailing direction parallel to the shipping direction, and a bin or hopper inside the hull for receiving the dredged soil, wherein the pulling cable installation comprises a sheave or drum on the hull that is rotatably driven, and a pulling cable with a first end and a second end that extends in the shipping direction and that is wounded along the sheave or drum.

Description

Dredging vessel with a pulling cable in its shipping direction
BACKGROUND
The invention relates to a dredging vessel with a trailing suction head for dredging soil and a bin or hopper for receiving the dredged soil. A known dredging vessel of this type is a trailing suction hopper dredger (TSHD). Trailing suction hopper dredgers are designed to dredge, ship and discharge large amounts of soil in short time frames .
SUMMARY OF THE INVENTION
A disadvantage of the known trailing suction hopper dredgers is that they have a high propulsion power and use large amounts of energy to ship the large amounts of soil at high speed to meet the short time frames. This is useful in ambitious large projects, but in some projects such performance is not required or inappropriate.
It is an object of the present invention to provide a dredging vessel that is useful for projects in which efficiency in energy consumption is critical.
According to a first aspect, the invention provides a dredging vessel for dredging in a defined dredging area under water, wherein the dredging vessel comprises a hull, a pulling cable installation for commuting the hull in a shipping direction between the defined dredging area and a discharge area remote from the defined dredging area, a trailing suction dredging installation having a trailing suction head suspended from the hull for dredging soil in the defined dredging area in a trailing direction parallel to the shipping direction, and a bin or hopper inside the hull for receiving the dredged soil, wherein the pulling cable installation comprises a sheave or drum on the hull that is rotatably driven, and a pulling cable with a first end and a second end that extends in the shipping direction and that is wounded along the sheave or drum between the first end and second end, wherein the pulling cable extends from the sheave or drum towards the discharge area where it is anchored at its first end, and wherein the pulling cable extends from the sheave or drum in the shipping direction where it is anchored at its second end behind the defined dredging area with respect to the discharge area.
The dredging vessel according to the invention comprises a trailing suction head for dredging soil. The dredging vessel is propelled in the shipping direction by means of the pulling cable to commute between the defined dredging area and the remotely located discharge area for the soil. Commuting along the pulling cable can be performed at any low speed, whereby the required power for rotating the sheave or drum can be relatively low, in particular when compared with traditional ship propulsion system that requires a minimal shipping speed. The dredging vessel according to the invention can be employed in dredging projects in which efficiency in energy consumption is critical. The dredging vessel according to the invention can also be employed in maintenance dredging operations to keep a defined dredging area permanently at the required depth.
In an embodiment the dredging vessel comprises a green electricity generator for generating electricity for powering the pulling cable installation and the trailing suction dredging installation. In this context a green electricity generator is defined as an electricity generator that uses renewable energy sources.
In an embodiment thereof the green electricity generator comprises a wind turbine on the hull.
Alternatively, or in addition thereto, the green electricity generator comprises a photovoltaic solar panel.
In an embodiment the dredging vessel comprises a rechargeable battery for providing electricity for powering the pulling cable installation and the trailing suction dredging installation. The rechargeable battery can be charged in many ways, for example by means of the green electricity generator, or by means of an external power source .
In an embodiment the rechargeable battery provides electricity in bursts having a power that is higher than the peak power of the green electricity generator. The dredging vessel can then operate in bursts that start when the rechargeable battery has accumulated enough energy to perform the dredging or the shipping along the pulling line.
In an embodiment the dredging vessel comprises a connector for temporarily connecting an electricity cable to the dredging vessel for charging the rechargeable battery. The electricity cable can form a docking station for charging the battery, wherein the docking station may be located close to a shore or near a wind farm for example .
In preferred embodiments the pulling cable has a length between the first end and the second end in the shipping direction of about 1 kilometer, 10 kilometer, 20 kilometer, 30 kilometer, 40 kilometer or 50 kilometer. Over these practical distances a pulling cable can outperform a traditional ship propulsion system.
In an embodiment the trailing suction dredging installation is adapted for dredging on a depth of 3-50 meters, which will practically be performed near sea shores or in lakes.
In an embodiment the trailing suction dredging installation comprises a dredging pump between the trailing suction head and the hopper or bin, wherein the dredging pump is preferably an electric driven dredging pump to be powered from a rechargeable battery for example.
In an embodiment the trailing suction dredging installation comprises a discharge pump between the bin and a connection on the hull for a discharge tube, wherein the discharge pump is preferably an electric driven discharge pump to be powered from a rechargeable battery for example.
In an embodiment the sheave or drum of the pulling cable installation is an electric driven sheave or drum to be powered from a rechargeable battery for example.
In an embodiment the hull comprises a bow and a stern spaced apart in the shipping direction, wherein the pulling cable extends between the bow and the stern and the sheave or drum is located between the bow and the stern.
The invention also relates to the use of the dredging vessel for dredging in the defined dredging area under water.
According to a second aspect, the invention provides a method for dredging in a defined dredging area under water remote from a discharge area by means of a dredging vessel, wherein the dredging vessel comprises a hull, a pulling cable installation for commuting the hull in a shipping direction between the defined dredging area and a discharge area remote from the defined dredging area, a trailing suction dredging installation having a trailing suction head suspended from the hull for dredging soil in the defined dredging area in a trailing direction parallel to the shipping direction, and a bin or hopper inside the hull for receiving the dredged soil, wherein the pulling cable installation comprises a sheave or drum on the hull that is rotatably driven, and a pulling cable with a first end and a second end that extends in the shipping direction and that is wounded along the sheave or drum between the first end and second end, wherein the pulling cable extends from the sheave or drum towards the discharge area where it is anchored at its first end, and wherein the pulling cable extends from the sheave or drum in the shipping direction where it is anchored at its second end behind the defined dredging area with respect to the discharge area, wherein the method comprises the step of rotating the sheave or drum to pull the hull along the pulling cable above the defined dredging area while the trailing suction head is trailed, and dredging soil from the defined dredging area into the bin or hopper.
In an embodiment the method comprises the step of retracting the suction head after filling the bin or hopper with soil, and the step of rotating the sheave or drum to pull the hull along the pulling cable from the defined dredging area to the discharge area, and the step of discharging the soil from the bin or hopper at the discharge area.
In embodiments thereof the distance between the defined dredging area and the discharge area is about 1 kilometer, 10 kilometer, 20 kilometer, 30 kilometer, 40 kilometer or 50 kilometer.
In an embodiment the discharge area is located closer to a shore than the defined dredging area.
In an embodiment the dredging vessel comprises a rechargeable battery for providing electricity for powering the pulling cable installation and the trailing suction dredging installation, wherein the method comprises the step of charging the rechargeable battery before trailing the suction head in the defined dredging area. The dredging operation can then be perform in a burst wherein the bin or hopper is filled in its entirety or for a substantial part of it in one continuous operation.
In an embodiment the hull commutes between the defined dredging area and the discharge area in the shipping direction by means of the pulling cable installation only, that is, the hull is not provided with a propulsion system for propelling the hull in the shipping direction by means of a propeller or pump-jet.
The various aspects and features described and shown in the specification can be applied, individually, wherever possible. These individual aspects, in particular the aspects and features described in the attached dependent claims, can be made subject of divisional patent applications .
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be elucidated on the basis of an exemplary embodiment shown in the attached drawings, in which:
Figures 1 and 2 are an isometric view and a side view of a dredging vessel according to an embodiment of the invention during dredging of sediment;
Figure 3 is a side view of the dredging vessel of figures 1 and 2 during discharging of the dredged sediment at shore.
DETAILED DESCRIPTION OF THE INVENTION
Figures 1 and 2 show a relatively shallow sea or lake 1 having a bottom 2 with a defined dredging area 3 with sediment or soil to be dredged, such as sand, that is located at a shipping distance D from a shore 6 as shown in
figure 3. The shipping distance D is a plurality of
kilometers or tens of kilometers, such as 1 kilometer, 10
kilometer, 20 kilometer, 30 kilometer, 40 kilometer or 50
kilometer . The water depth H is 3-50 met er.
Figures 1 and 2 show a dredging barge or dredging vessel 10 according to an embodiment of the invention during dredging. The dredging vessel 10 comprises a hull 11 having a bow 12 and a stern 13 and a shipping direction S in the elongated direction between the bow 12 and the stern 13 of the hull 11. The dredging vessel 10 comprises a closed bin 15 inside the hull 11 for storage of dredged sediment or soil. Alternatively the dredging vessel 10 comprises a hopper inside the hull 11 for storage of the dredged sediment or soil, wherein the hopper is provided with a bottom door for dumping the sediment or soil. The dredging vessel 10 comprises a trailing suction dredging installation 16 for dredging the sediment or soil in the defined dredging area 3.
The trailing suction dredging installation 16 comprises a schematically indicated straight suction tube 17 that may be supported by a straight ladder, and a trailing suction head 18 at the distal end of the suction tube 17. The suction tube 17 is at the distal end pivotably connected to the side of the hull 11. The trailing suction dredging installation 16 comprises an electric driven hoisting winch 20 on the hull 11 around which a hoisting cable 19 is wound that is connected with the suction tube 17. The suction tube 17 and the trailing suction head 18 are by means of the winch 20 pivotably lowered and hoisted in direction A between an dredging position below the hull 11 as shown in figures 1 and 2, and a shipping position along the hull 11 as shown in figure 3.
The trailing suction dredging installation 16 comprises a schematically indicated electric driven dredging pump 25 between the suction head 18 and the bin 15, and a schematically indicated electric driven discharge pump 26 between the bin 15 and a tube connector 27 on the hull 11. The dredging pump 25 and the discharge pump 26 may alternatively be embodied as one pump that can switch between suction and discharging by setting intermediary valves. The tube connector 27 is adapted for connection with a discharge tube 28. Depending on the local circumstances, the discharge tube 28 mainly extends on the shore 6 as shown in figure 3, or it floats near the shore 6 to be picked up and connected to the tube connector 27, or it rests on the bottom 2 near the shore 6 and it has a buoyancy body at the end to be picked up.
The dredging vessel 10 comprises a pulling cable installation 29 for commuting the hull 11 in the shipping direction S between the defined dredging area 3 and the shore 6 over the entire shipping distance D. The pulling cable installation 29 comprises an upper cable sheave 30 and a lower cable sheave 31 that are rotatably mounted to the bow 12, and an upper cable sheave 32 and a lower cable sheave 33 that are rotatably mounted to the stern 32. The pulling cable installation 29 comprises a cable sheave or a capstan 35 having an electric driven drum 36, and a long pulling cable 37 that is longer than the shipping distance D having one or more intermediate windings around the drum 36. The pulling cable 37 is in one direction fed along the sheaves 30, 31 on the bow 12 and ends on the shore 6 where it is connected to a first anchor 38. The pulling cable 37 is in the opposite direction fed along the sheaves 32, 33 on the stern 13 and ends behind the defined dredging area 3 where it is connected to a second anchor 39 in the bottom
2. Depending on the local circumstances, the pulling cable 37 is of a synthetic fiber or other floating material to remain afloat on the lake 1, or it is made of steel or other sinking material to lay on the bottom 2 when it is not under tension as shown in figures 2 and 3. Advantageously a material can be chosen that gives the pulling cable 37 low sinking capacity, whereby the pulling cable 37 sinks while a relatively low hoisting force is necessary to locally lift the pulling cable 37 from the bottom 2. The pulling cable installation 29 is provided with not a shown cable tensioning provision to ensure that the pulling cable 37 remains tensioned at its winding around the drum 36. The capstan 35 is provided with a dampening provision to absorb shocks between the hull 11 and the engaged pulling cable 37.
The dredging vessel 10 is not provided with a propulsion system for propelling the hull 11 in the shipping direction S by means of a propeller or pump-jet. The dredging vessel 10 commutes in the shipping direction S by means of the pulling cable installation 29 only.
The dredging vessel 10 is designed to operate autonomous, like a robot, in long lasting, low speed dredging projects. The dredging vessel 10 comprises multiple green electricity generators, for example the schematically indicated photovoltaic solar panels 40 and wind turbines 41 for generating electricity for the hoisting winch 20, the dredging pump 25, the discharge pump 26 and the capstan 35. The dredging vessel 10 comprises a rechargeable battery 42 for storage of the generated electricity. The dredging vessel 10 is designed to dredge in bursts. In one burst the hoisting winch 20, the dredging pump 25 and the capstan 35 are powered from the rechargeable battery 42 when a dredging cycle can be performed to fill the bin 15 in its entirety or for a substantial part of it. The capstan 35 is powered when it can pull the dredging vessel 10 in one or a few strokes over the shipping distance D from the defined dredging area 3 to the shore 6. The dredging pump 25 and the discharge pump 26 are powered when the bin 15 can be fluidized and emptied in its entirety or for a substantial part of it.
In operation, capstan 35 is powered to pull the hull 11 in the shipping direction S to and above the defined dredging area 3 that extend between the first anchor 38 and the second anchor 39. When the rechargeable battery 42 has stored sufficient energy from the solar panels 40 and the wind turbines 41 to fill the bin 15, the hoisting cable 19 is lowered to position the trailing suction head 18 in direction A onto the bottom 2, and subsequently the dredging pump 25 and the capstan 35 are powered to move the trailing suction head 18 in direction T parallel to the shipping direction S over the defined dredging area 3 to suck and pump a mixture of sand and water into the bin 15 where it is dewatered. In this cycle one or more trails 4 are formed inside the defined dredging area 3, depending on the local circumstances. When the bin 15 is entirely filled with dewatered sand 5, the hoisting cable 19 is hauled in to retract the trailing suction head in direction A aside the hull 11.
When the rechargeable battery 42 has stored sufficient energy from the solar panels 40 and the wind turbines 41 for shipping to the shore 6, the capstan 35 is powered to pull the hull 11 along the pulling cable 37 over the shipping distance D from the defined dredging area 3 to the shore 6 that forms a discharge area for the soil. The section of the pulling cable 37 that extends between the hull 11 and the first anchor 38 comes under tension whereby it will be raised at least locally from the bottom 2 around the hull 11. At the shore 6, the discharge pipe 28 is connected and when the rechargeable battery 42 has stored sufficient energy from the solar panels 40 and the wind turbines 41 to discharge the sand, the dredging pump 25 is powered for fluidization of the sand 5 and the discharge pump 26 is powered to discharge the fluidized sand. When the dredging vessel 10 is provided with a hopper with a bottom door, the sand 5 can alternatively also be dumped by opening the bottom door at the discharge area.
When the rechargeable battery 42 has stored sufficient energy from the solar panels 40 and the wind turbines 41 for shipping back to the defined dredging area 3, the capstan 35 is powered to ship the hull 11 back along the pulling cable 37 to start the next dredging cycle.
In abovementioned example the dredging vessel 10 is powered by means of green electricity generators. Alternatively, a long umbilical cable extends between the dredging vessel 10 and the shore 6 that is connected to the electricity grid. The electricity can provide electricity from remote green electricity generators. Alternatively, the dredging vessel 10 is powered via an electricity cable that is temporary connected with the dredging vessel 10 at specific places, such as the discharge area close to the shore 6 to power the discharge pump 26 and to charge the rechargeable battery 42 for the next dredging cycle, or a remote area near the defined dredging area 3 that is close to an offshore wind farm. Alternatively, or in addition to the green electricity generators or to the power from the rechargeable battery 42 alone, the dredging vessel 10 may be provided with a sail to assist in the shipping and to force sideward displacements of the hull 11, whereby 5 parallel dredging trails 4 can be formed within the sideward play of the long pulling cable 37. In the abovementioned example the rechargeable battery 42 remains on the dredging vessel 10 while it is charged.
Alternatively exchangeable rechargeable batteries are used 10 that are charged outside the dredging vessel 10, such as on the shore 6, and placed in the dredging vessel before the next dredging cycle is performed.
It is to be understood that the above description is included to illustrate the operation of the preferred 15 embodiments and is not meant to limit the scope of the invention. From the above discussion, many variations will be apparent to one skilled in the art that would yet be encompassed by the scope of the present invention.

Claims (21)

CONCLUSIESCONCLUSIONS 1. Baggervaartuig voor het baggeren in een gedefinieerd baggergebied onder water, waarbij het baggervaartuig is voorzien van een romp, een t rekkabelinstallat ie voor het pendelen van de romp in een vaarrichting tussen het gedefinieerde baggergebied en een losgebied op afstand van het gedefinieerde baggergebied, een sleep-zuig-baggerinstallatie met een sleep-zuigkop die is opgehangen aan de romp voor het opbaggeren van bodemmateriaal in het gedefinieerde baggergebied in een sleeprichting evenwijdig aan de vaarrichting, en een beun of hopper in de romp voor ontvangst van het opgebaggerde bodemmateriaal, waarbij de trekkabelinstallatie is voorzien van een schijf of trommel aan de romp die roterend is aangedreven, en een trekkabel met een eerste eind en een tweede eind dat zich in de vaarrichting uitstrekt en dat tussen het eerste eind en tweede eind langs de schijf of trommel is gewonden, waarbij de trekkabel zich vanaf de schijf of trommel uitstrekt naar het losgebied waar het aan het eerste eind verankerd is, en waarbij de trekkabel zich vanaf de schijf of trommel uitstrekt in de vaarrichting waar het aan het tweede eind ten opzichte van het losgebied achter het gedefinieerde baggergebied is verankerd.1. Dredging vessel for dredging in a defined underwater dredging area, where the dredging vessel is equipped with a hull, a towing cable installation for shuttling the hull in a direction of travel between the defined dredging area and a discharge area at a distance from the defined dredging area, a trailing suction dredging installation with a trailing suction head suspended from the hull for dredging bottom material in the defined dredging area in a towing direction parallel to the sailing direction, and a hopper or hopper in the hull for receiving the dredged material, whereby the traction rope installation includes a hull sheave or drum that is rotatably driven, and a traction rope with a first end and a second end extending in the direction of travel and wound along the sheave or drum between the first end and second end, the pull cable extending from the disc or drum to the release area where it meets the e first end is anchored, and the traction rope extends from the disc or drum in the direction of travel where it is anchored at the second end relative to the unloading area behind the defined dredging area. 2. Baggervaartuig volgens conclusie 1, omvattend een groene elektriciteitsopwekker voor het opwekken van elektriciteit voor het bekrachtigen van de trekkabelinstallatie en de sleep-zuig-baggerinstallatie.Dredging vessel according to claim 1, comprising a green electricity generator for generating electricity for energizing the traction cable installation and the trailing suction dredging installation. 3. Baggervaartuig volgens conclusie 2, waarbij de groene elektriciteitsopwekker een windturbine aan de romp omvat.Dredging vessel according to claim 2, wherein the green electricity generator comprises a wind turbine on the hull. 4. Baggervaartuig volgens conclusie 2 of 3, waarbij de groene elektriciteitsopwekker een fotovoltaïsch zonnepaneel omvat.Dredging vessel according to claim 2 or 3, wherein the green electricity generator comprises a photovoltaic solar panel. 5. Baggervaartuig volgens een der voorgaande conclusies, omvattend een oplaadbare batterij voor het verschaffen van elektriciteit voor het bekrachtigen van de trekkabelinstallatie en de sleep-zuig-baggerinstallatie.Dredging vessel according to any one of the preceding claims, comprising a rechargeable battery for supplying electricity for energizing the traction rope installation and the trailing suction dredging installation. 6. Baggervaartuig volgens conclusies 2 en 5, waarbij de oplaadbare batterij de elektriciteit verschaft in stoten met een vermogen dat hoger is dan het piekvermogen van de groene elektriciteitsopwekker.Dredging vessel according to claims 2 and 5, wherein the rechargeable battery provides the electricity in bursts with a power higher than the peak power of the green electricity generator. 7. Baggervaartuig volgens conclusie 5 of 6, omvattend een koppeling voor het tijdelijk aankoppelen van een elektriciteitskabel aan het baggervaartuig voor het opladen van de oplaadbare batterij.Dredging vessel according to claim 5 or 6, comprising a coupling for temporarily coupling an electric cable to the dredging vessel for charging the rechargeable battery. 8. Baggervaartuig volgens een der voorgaande conclusies, waarbij de trekkabel in de vaarrichting een lengte tussen het eerste eind en het tweede eind heeft van ongeveer 1 kilometer, 10 kilometer, 20 kilometer, 30 kilometer, 40 kilometer of 50 kilometer.Dredging vessel according to any one of the preceding claims, wherein the traction rope in the direction of travel has a length between the first end and the second end of about 1 kilometer, 10 kilometers, 20 kilometers, 30 kilometers, 40 kilometers or 50 kilometers. 9. Baggervaartuig volgens een der voorgaande conclusies, waarbij de sleep-zuig-baggerinstallatie is ingericht voor het baggeren op een diepte van 3-50 meter.Dredging vessel according to any one of the preceding claims, wherein the towing-suction-dredging installation is adapted for dredging at a depth of 3-50 meters. 10. Baggervaartuig volgens een der voorgaande conclusies, waarbij de sleep-zuig-baggerinstallatie is voorzien van een baggerpomp tussen de sleep-zuigkop en de hopper of beun.Dredging vessel according to any one of the preceding claims, wherein the trailing suction dredging installation is provided with a dredging pump between the trailing suction head and the hopper or hopper. 11. Baggervaartuig volgens conclusie 10, waarbij de baggerpomp een elektrisch aangedreven baggerpomp is.Dredging vessel according to claim 10, wherein the dredging pump is an electrically driven dredging pump. 12. Baggervaartuig volgens een der voorgaande conclusies, waarbij de sleep-zuig-baggerinstallatie is voorzien van een lospomp tussen de beun en een koppeling aan de romp voor een losbuis.Dredging vessel according to any one of the preceding claims, wherein the towing-suction-dredging installation comprises a discharge pump between the barge and a coupling on the hull for a discharge tube. 13. Baggervaartuig volgens conclusie 12, waarbij de lospomp een elektrisch aangedreven lospomp is.Dredging vessel according to claim 12, wherein the discharge pump is an electrically driven discharge pump. 14 . Baggervaartuig volgens een der voorgaande conclusies, waarbij de schijf of trommel van de trekkabelinstallatie een elektrisch aangedreven schijf of trommel is.14. Dredging vessel according to any one of the preceding claims, wherein the pulley or drum of the pulling cable installation is an electrically driven disk or drum. 15. Baggervaartuig volgens een der voorgaande conclusies, waarbij de romp een boeg en een achtersteven op afstand van elkaar in de vaarrichting omvat, waarbij de trekkabel zich tussen de boeg en de achtersteven uitstrekt en de schijf of trommel tussen de boeg en de achtersteven is geplaatst.Dredging vessel according to any one of the preceding claims, wherein the hull comprises a bow and a stern spaced in the sailing direction, the traction rope extending between the bow and the stern and the disc or drum being placed between the bow and the stern . 16. Werkwijze voor het baggeren in een gedefinieerd baggergebied onder water door middel van een baggervaartuig, waarbij het baggervaartuig is voorzien van een romp, een trekkabelinstallatie voor het pendelen van de romp in een vaarrichting tussen het gedefinieerde baggergebied en een losgebied op afstand van het gedefinieerde baggergebied, een sleep-zuigbaggerinstallatie met een sleep-zuigkop die is opgehangen aan de romp voor het opbaggeren van bodemmateriaal in het gedefinieerde baggergebied in een sleeprichting evenwijdig aan de vaarrichting, en een beun of hopper in de romp voor ontvangst van het opgebaggerde bodemmateriaal, waarbij de trekkabelinstallatie is voorzien van een schijf of trommel aan de romp die roterend is aangedreven, en een trekkabel met een eerste eind en een tweede eind dat zich in de vaarrichting uitstrekt en dat tussen het eerste eind en tweede eind langs de schijf of trommel is gewonden, waarbij de trekkabel zich vanaf de schijf of trommel uitstrekt naar het losgebied waar het aan het eerste eind verankerd is, en waarbij de trekkabel zich vanaf de schijf of trommel uitstrekt in de vaarrichting waar het aan het tweede eind ten opzichte van het losgebied achter het gedefinieerde baggergebied is verankerd, waarbij het werkwijze de stap omvat van het roteren van de schijf of trommel om de romp boven het gedefinieerde baggergebied langs de trekkabel te trekken terwijl de sleep-zuigkop wordt gesleept, en het opbaggeren van bodemmateriaal van het gedefinieerde baggergebied in de beun of hopper.16. Method for dredging in a defined underwater dredging area by means of a dredging vessel, wherein the dredging vessel is provided with a hull, a pulling cable installation for shuttling the hull in a direction of travel between the defined dredging area and a discharge area at a distance from the defined dredging area, a trailing suction dredging installation with a trailing suction head suspended from the hull for dredging soil material in the defined dredging area in a direction of towing parallel to the direction of travel, and a hopper or hopper in the hull for receiving the dredged material, whereby the pulling cable installation is provided with a disk or drum on the hull that is rotatably driven, and a pulling cable with a first end and a second end extending in the sailing direction and wound along the disk or drum between the first end and second end , wherein the pull cable extends from the disc or drum to the unloading area where it is anchored at the first end, and wherein the pulling cable extends from the disc or drum in the direction of travel where it is anchored at the second end relative to the unloading area behind the defined dredging area, the method comprising the step of rotating the disc or drum to pull the hull above the defined dredging area along the traction rope while the trailing suction head is towed, and dredging bottom material of the defined dredging area in the hopper or hopper. 17. Werkwijze volgens conclusie 16, omvattend de stap van het optrekken van de zuigkop na het vullen van de beun of hopper met bodemmateriaal, en de stap van het roteren van de schijf of trommel om de romp langs de kabel te trekken van het gedefinieerde baggergebied naar het losgebied, en de stap van het lossen van het bodemmateriaal van de beun of hopper bij het losgebied.A method according to claim 16, comprising the step of pulling up the suction head after filling the hopper or hopper with bottom material, and the step of rotating the disc or drum to pull the hull along the cable from the defined dredging area to the unloading area, and the step of unloading the bottom material from the hopper or hopper at the unloading area. 18. Werkwijze volgens conclusie 17, waarbij de afstand tussen het gedefinieerde baggergebied en het losgebied ongeveer 1 kilometer, 10 kilometer, 20 kilometer, 30 kilometer, 40 kilometer of 50 kilometer is.The method of claim 17, wherein the distance between the defined dredging area and the unloading area is about 1 kilometer, 10 kilometers, 20 kilometers, 30 kilometers, 40 kilometers or 50 kilometers. 19. Werkwijze volgens een der conclusies 16-18, waarbij het losgebied dichter bij een kust is gelegen dan het gedefinieerde baggergebied.A method according to any one of claims 16-18, wherein the unloading area is located closer to a coast than the defined dredging area. 20. Werkwijze volgens een der conclusies 16-19, waarbij het baggervaartuig een oplaadbare batterij omvat voor het verschaffen van elektriciteit voor het bekrachtigen van de trekkabelinstallatie en de sleep-zuigbaggerinstallatie, waarbij de werkwijze de stap omvat van het opladen van de oplaadbare batterij voorafgaand aan het slepen van de zuigkop in het gedefinieerde baggergebied.A method according to any one of claims 16-19, wherein the dredging vessel comprises a rechargeable battery for providing electricity to power the traction cable installation and the trailing suction dredging installation, the method comprising the step of charging the rechargeable battery prior to towing the suction head in the defined dredging area. 21. Werkwijze volgens een der conclusies 16-19, waarbij de romp pendelt tussen het gedefinieerde baggergebied en het losgebied door middel van slechts de trekkabelinstallatie.A method according to any one of claims 16-19, wherein the hull shuttles between the defined dredging area and the unloading area by means of only the traction rope installation.
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Citations (5)

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Publication number Priority date Publication date Assignee Title
EP0655535A1 (en) * 1993-11-25 1995-05-31 A. Hak Nederland B.V. Method and apparatus for dredging a trench in a water bed
CN203741906U (en) * 2014-03-25 2014-07-30 威士邦（厦门）环境科技有限公司 Continuous cutter-suction type sludge handling ship
WO2015035461A1 (en) * 2013-09-12 2015-03-19 Hatch Pty Ltd Method for manoeuvring a vessel
CN105926703A (en) * 2016-07-05 2016-09-07 舟山市卓林船舶设计有限公司 Dredger of improved structure
EP3333327A1 (en) * 2016-12-10 2018-06-13 Imotec Holding B.V. Autonomous dredging vehicle for dredging a dam reservoir

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0655535A1 (en) * 1993-11-25 1995-05-31 A. Hak Nederland B.V. Method and apparatus for dredging a trench in a water bed
WO2015035461A1 (en) * 2013-09-12 2015-03-19 Hatch Pty Ltd Method for manoeuvring a vessel
CN203741906U (en) * 2014-03-25 2014-07-30 威士邦（厦门）环境科技有限公司 Continuous cutter-suction type sludge handling ship
CN105926703A (en) * 2016-07-05 2016-09-07 舟山市卓林船舶设计有限公司 Dredger of improved structure
EP3333327A1 (en) * 2016-12-10 2018-06-13 Imotec Holding B.V. Autonomous dredging vehicle for dredging a dam reservoir

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