Trailing Suction Hopper Dredgers

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Trailing Suction Hopper Dredgers

Capabilitysheettrailing suction hopper Dredger (tshd)a sea-going self-propelled free floating vessel that loadsdredged material into its hopper wellIntroductionA Trailing Suction Hopper Dredger (TSHD) is asea-going self-propelled free floating vessel thatloads dredged material into its hopper well. TheTSHD’s dredging process consists of a cycle of aloading (dredging), transporting (sailing) anddischarging. Dredging takes place through thesuction pipe(s) and draghead(s) which are locatedat the lower end(s) of one or two suction pipe(s),installed alongside the vessel. Dredging pump(s) liftthe mixture of soil and water into the hopper well.After dredging, the TSHD stops pumping, lifts thesuction pipe and draghead on deck and sails to thedischarge area. Discharging the dredged materialcan be done in different ways, such as dischargingthrough bottom doors, or by pumping options suchas rainbowing, pumping to a reclamation area,spray pontoon or through the suction pipe.Main parts TSHD:• Standard ship’s installation for example engines,the crew’ quarters, the bridge with dredgingand navigational controls, etc;• The draghead (1), connected at the lower lowerend of the suction pipe. This draghead loosensand collects the sediments to be dredged usingteeth and/or water jets.Different types of dragheads can be fitted, depending on the soil conditions;• The (underwater) dredging pump (2), which pumps the mixture from theseabed into the hopper well and if required from the hopper well to thereclamation area;• The suction pipe (3) and deck pipelines through which the mixture is transported;• The hopper well (4) is the ship’s hold. The dredged material remains in thehopper well during transport until discharge.Work methodTo start dredging operations, the TSHD will sail to the dredging (or borrow)area. Once in the dredging area, the suction pipe(s) are lowered to the seabed,the dredge pump(s) are started and dredging commences. While dredging thedraghead(s) scrape(s) over the seabed and loosen(s) the sediments. Thesediment-water mixture is brought up through the suction pipe and pumped intothe hopper well. During loading with its draghead(s) on the seabed, the TSHDC 1. Hopper 2. Suction pipe 3. DragheadADA TSHD oranje pumping dredgedmaterial to shoreB dredging controlC tshd Willem van oranjeD tshd Prins der nederlanden rainbowingB


trailing suction hopper dredger (tshD)a sea-going self-propelled free floating vessel that loadsdredged material into its hopper wellEH01 — 2012 The information contained in this data sheet is for guidance purposes only and may be subject to changes. © Boskalis. All rights reserved.sails fairly slow. The dredged material settles out inthe hopper well and the excess transport water isevacuated through the overflow system. When themaximum load is reached, dredging will besuspended and the suction pipe(s) will be hoistedon deck. The vessel then sails oaded with dredgedmaterial, to the discharge area. Discharging thedredged material can be done by:• Opening the bottom doors;• Pumping through a nozzle over the bow, socalledrainbowing;• Pumping through pipelines to a reclamationarea;• Pumping through pipelines to a spray pontoon;• Pumping through the suction pipe• Loading barges. This scheme is repeated untilan entire section has been dredged to therequired dimensions, confirmed by a survey.FGtrailing suction hopper dredgersSome of Boskalis' TSHD'sName Capacity (m 3 ) Max. dredgingdepth (m)Queen of the Nether lands 35,500 83Oranje / Prins der Nederlanden 16,000 90Seaway 13,000 57Gateway / Willem van Oranje 12,000 62Barent Zanen / Cornelis Zanen 8,500 51Crestway / Shoreway 5,600 33Waterway / Coastway 4,900 28Shoalway 4,500 30SuitabilityTSHD is capable to dredge a wide range of material like silt, clay, sand andgravel. Even strong cohesive and cemented soils can be dredged. Differenttypes of dragheads can be fitted depending on soil conditions. Depths of morethan 100m can be achieved by the larger dredgers, using a suction pipemounted underwater pump. With its maneuverability a TSHD is very suitable inharbors and fairways with busy traffic. A TSHD is often used for harbourdeepening and maintenance works, reclamation projects, trenching works andbeach nourishments.Dredging controlDredging tolerances are an accumulation of positioning and tracking accuracy,soil characteristics, swell, tidal data, variances, skilled operation and accuracyof dataFleet of BoskalisBoskalis has around forty of these vessels, including one of the largest in theworld, the Queen of the netherlands. Some of the TSHDs of Boskalis are listedbelow. For the complete list of TSHDs of Boskalis check on www.boskalis.com.discharge methodsDischarging the dredged material can be done by:DumpingRainbowingPumping ashoreE Raised dragheadF dredging controlG special type of dragheadH tshd Prins der nederlanden,Queen of the netherlands ,Cornelis ZanenRoyal Boskalis Westminster N.V.PO Box 433350 AA PapendrechtThe NetherlandsT +31 78 69 69 000F +31 78 69 69 555royal@boskalis.comwww.boskalis.com


EQUIPMENTSHEETARGONAUTTRAILING SUCTION HOPPER DREDGERCONSTRUCTION/CLASSIFICATIONMAIN DATABuilt byIHC Smit B.V., KinderdijkGross tonnage 2,172Year of construction -Year of modification 1990Length overallMoulded breadth85.86 m14.00 mClassificationB.V. I 3/3 (E) Hopper Dredger DeepSea, AUT-MSMoulded depthDraught empty6.30 m3.10 mDraught loaded5.25 mCarrying capacity (D.W.)3,500 tFEATURESHopper capacity 2,500/3,000 m 3Dredging freeboard for trading area up to 8 miles offshore(at int. loadline: unrestricted).Capable of dredging and dumping in shallow waters.Equipped with the latest computer systems to control and optimizethe dredging process.De-gassing installation, jet-system in the hopper and hoppermeasurement system.Pump ashore installation with bow-coupling.Suction pipe diameterMax. dredging depthDischarge systemsSailing speed loadedTotal installed powerSand pump outputJet pump outputPump ashore outputPropulsion power sailingBow thruster1x 800 mm25.0 m12 hydraulically operatedbottom doors10.0 kn (empty: 11.3 kn)4,385 kW1x 588/636 kW (low/high revs)1x 383 kW1,838 kW1,956 kW220 kW


ARGONAUTTRAILING SUCTION HOPPER DREDGERSIDE VIEW01 — 2012 The information contained in this data sheet is for guidance purposes only and may be subject to changes. © Boskalis. All rights reserved.TOP VIEW DECK LEVELTOP VIEW BELOW MAIN DECKRoyal Boskalis Westminster N.V.PO Box 433350 AA PapendrechtThe NetherlandsT +31 78 69 69 000F +31 78 69 69 555royal@boskalis.comwww.boskalis.com


EQUIPMENTSHEETBARENT ZANENTRAILING SUCTION HOPPER DREDGERCONSTRUCTION/CLASSIFICATIONMAIN DATABuilt byIHC Smit B.V.Gross tonnage 9,773Year of construction 1984Length overall133.58 mClassificationB.V. I X HULL X MACH X AUT-UMS,Hopper dredgerDredging within 15 miles from shore orwithin 20 miles from portDredging over 15 miles from shore withH.S.


BARENT ZANENTRAILING SUCTION HOPPER DREDGER01 — 2012 The information contained in this data sheet is for guidance purposes only and may be subject to changes. © Boskalis. All rights reserved.SIDE VIEWTOP VIEW DECK LEVELRoyal Boskalis Westminster N.V.PO Box 433350 AA PapendrechtThe NetherlandsT +31 78 69 69 000F +31 78 69 69 555royal@boskalis.comwww.boskalis.com


equipmentsheetCoastwaytrailing suction hopper dredgerConstruction/Classificationmain dataBuilt byMerwede ShipyardGross tonnage 5,393Year of construction 2002Length overall97.70 mClassificationB.V. I X HULL X MACH X AUT-UMSHopper DredgerDredging within 15 miles from shore orwithin 20 miles from portDredging over 15 miles from shore withH.S.


Coastwaytrailing suction hopper dredger01 — 2012 The information contained in this data sheet is for guidance purposes only and may be subject to changes. © Boskalis. All rights reserved.Side viewTop view deck levelRoyal Boskalis Westminster N.V.PO Box 433350 AA PapendrechtThe NetherlandsT +31 78 69 69 000F +31 78 69 69 555royal@boskalis.comwww.boskalis.com


EQUIPMENTSHEETCORNELIS ZANENTRAILING SUCTION HOPPER DREDGERCONSTRUCTION/CLASSIFICATIONMAIN DATABuilt byIHC Smit B.V.Gross tonnage 9,616Year of construction 1982Length overall132.20 mClassificationB.V. I X HULL X MACH X AUT-UMSHopper DredgerDredging within 15 miles from shore orwithin 20 miles from portDredging over 15 miles from shore withH.S.


CORNELIS ZANENTRAILING SUCTION HOPPER DREDGER01 — 2012 The information contained in this data sheet is for guidance purposes only and may be subject to changes. © Boskalis. All rights reserved.SIDE VIEWTOP VIEW DECK LEVELRoyal Boskalis Westminster N.V.PO Box 433350 AA PapendrechtThe NetherlandsT +31 78 69 69 000F +31 78 69 69 555royal@boskalis.comwww.boskalis.com


equipmentsheetCoronauttrailing suction hopper dredgerConstruction/Classificationmain dataBuilt byIHC Smit B.V., KinderdijkGross tonnage 2,020Year of construction 1988Length overall85.86 mClassificationB.V. I 3/3 (E) Hopper Dredger DeepSea, AUT-MSMoulded breadthMoulded depth14.00 m6.30 mDraught empty3.10 mDraught loaded5.25 mfeaturesCarrying capacity (D.W.)3,500 tDredging freeboard for trading area up to 8 miles offshore(at int. loadline: unrestricted).Capable of dredging and dumping in shallow waters.Equipped with the latest computer systems to control and optimizethe dredging process.De-gassing installation, jet-system in the hopper and hoppermeasurement system.Pump ashore installation with bow-coupling.Hopper capacity 2,500 m 3Suction pipe diameterMax. dredging depthDischarge systemsSailing speed loadedTotal installed powerSand pump output1x 800 mm25.0 m12 hydraulically operatedbottom doors10.0 kn (empty: 11.3 kn)4,385 kW1x 588/636 kW (low/high revs)Jet pump outputPump ashore outputPropulsion power sailingBow thruster1x 383 kW1,838 kW1,956 kW220 kW


coronauttrailing suction hopper dredger01 — 2012 The information contained in this data sheet is for guidance purposes only and may be subject to changes. © Boskalis. All rights reserved.Side viewTop view deck levelTop view deck levelRoyal Boskalis Westminster N.V.PO Box 433350 AA PapendrechtThe NetherlandsT +31 78 69 69 000F +31 78 69 69 555royal@boskalis.comboskalis.com


crestwaytrailing suction hopper dredger01 — 2012 The information contained in this data sheet is for guidance purposes only and may be subject to changes. © Boskalis. All rights reserved.Side viewTop view deck levelRoyal Boskalis Westminster N.V.PO Box 433350 AA PapendrechtThe NetherlandsT +31 78 69 69 000F +31 78 69 69 555royal@boskalis.comwww.boskalis.com


equipmentsheetflevotrailing suction hopper dredgerConstruction/Classificationmain dataBuilt byIHC SmitGross tonnage 1,740Year of construction 1983Length overall79.00 mClassificationB.V. I 3/3 DeepseaBreadth14.04 mMoulded depth4.90 mMax. draught empty3.20 mMax. draught Int. load line4.05 mMax. draught dredging load line4.63 mCarrying capacity (D.W.)2,501 tHopper capacity 2,130 m 3Suction pipe diameterMax. dredging depthDischarge systemsSailing speed loadedTotal installed powerSand pump outputJet pump outputPump ashore outputPropulsion power sailingBow thruster0.70 m26.70 m12 bottom doors/pump ashore/rainbow installation10.5 kn2,303 kW550 kW387 kW838 kW1,676 kW275 kW


flevotrailing suction hopper dredger01 — 2012 The information contained in this data sheet is for guidance purposes only and may be subject to changes. © Boskalis. All rights reserved.Side viewTop view deck levelRoyal Boskalis Westminster N.V.PO Box 433350 AA PapendrechtThe NetherlandsT +31 78 69 69 000F +31 78 69 69 555royal@boskalis.comwww.boskalis.com


EQUIPMENTSHEETGATEWAYTRAILING SUCTION HOPPER DREDGERCONSTRUCTION/CLASSIFICATIONMAIN DATABuilt byMerwede Shipyard B.V.Length overall143.53 mYear of construction 2010Breadth28.00 mClassificationI X Hull X Mach. Hopperdredger.Unrestricted Navigation.Dredging within 15 miles from shore orwithin 20 miles from port; or dredgingover 15 miles from shore with asignificant wave height restriction to3.0 m. X AUT-UMSMoulded depth13.50 mMax. draught Int. load line 8.00 mMax. draught dredging load line 10.00 mCarrying capacity (D.W.) about 22,000 tHopper capacity 12,000 m 3FEATURES2 Separate hoppers with pump room in between.Accommodation on fore ship.1 Suction pipe with submersible dredge pump at starboard side.2 Fixed deckcranes.Relative small draught.Suction pipe diameterMax. dredging depthDischarge systemsSailing speed loadedTotal installed powerSand pump outputJet pump outputPump ashore outputPropulsion power sailingBow thruster1 x 1,200 mmapprox. 62.00 mDumping through bottom doors(4), shore discharge and rainbow.15.4 kn13,870 kWInboard dredge pump: 7,500 kWSubmersible dredge pump:3,500 kW2 x 1,250 kW7,500 kW2 x 6,000 kW2 x 700 kW


GATEWAYTRAILING SUCTION HOPPER DREDGER01 — 2012 The information contained in this data sheet is for guidance purposes only and may be subject to changes. © Boskalis. All rights reserved.SIDE VIEWTOP VIEW DECK LEVELRoyal Boskalis Westminster N.V.PO Box 433350 AA PapendrechtThe NetherlandsT +31 78 69 69 000F +31 78 69 69 555royal@boskalis.comwww.boskalis.com


equipmentsheetGEMMADrague suceuse à élinde trainanteConstruction/ClassificationInformation principaleChantier navalSlob, PapendrechtGross tonnage 1.715Année de construction 1979Net tonnage 541ClassificationB.V. I 3/3 E Deep SeaLongueur hors tout 78,80 m.Largeur 13,06 m.Creux 5,73 m.Tirant d’eau (vide) 2,50 m.Tirant d’eau (chargé) 5,40 m.Capacité de puit 2.389 m 3Capacité de chargement 2.730 T.Diamètre du bras de succion 0,5 m.Profondeur de dragage 29,50 m.Système de déchargementVitesse de navigationPuissance installéePompe submersiblePompe principalePuissance de propulsion ennavigationPuissance de propulsion lors dudragageportes et pompage10 noeuds3.343 kW654 kW940 kW1.094 kW1.094 kW


GEMMADrague suceuse à élinde trainante01 — 2012 The information contained in this data sheet is for guidance purposes only and may be subject to changes. © Boskalis. All rights reserved.Side viewTop view deck levelRoyal Boskalis Westminster N.V.PO Box 433350 AA PapendrechtThe NetherlandsT +31 78 69 69 000F +31 78 69 69 555royal@boskalis.comwww.boskalis.com


EQUIPMENTSHEETORANJETRAILING SUCTION HOPPER DREDGERCONSTRUCTION/CLASSIFICATIONMAIN DATABuilt byMerwede ShipyardGross tonnage 18,091Year of construction 2004Length overall156.00 mClassificationB.V. I X HULL X MACH X AUT-UMS,hopper dredger, unrestricted navigation,dredging over 15 miles from shore,MON-SHAFT.BreadthMoulded depthMax. draught empty28.00 m15.00 m4.63 mMax. draught Int. load line9.24 mFEATURESLong suction pipe with underwater pump.Max. draught dredging load line 1 12.02 mMax. draught dredging load line 2 12.84 m5 gravity-gantries.Carrying capacity (D.W.)30,445 tHopper capacity 15,961 m 3Suction pipe diameterMax. dredging depthDischarge systemsSailing speed loadedTotal installed powerSand pump outputJet pump outputPump ashore outputPropulsion power sailingBow thruster2 x 1.00 m90.0 mbottom doors/pump ashore/rainbow installation16.2 kn19,500 kW5,000 kW3,000 kW8,800 kW14,000 kW1,400 kW


ORANJETRAILING SUCTION HOPPER DREDGER01 — 2012 The information contained in this data sheet is for guidance purposes only and may be subject to changes. © Boskalis. All rights reserved.SIDE VIEWTOP VIEW DECK LEVELRoyal Boskalis Westminster N.V.PO Box 433350 AA PapendrechtThe NetherlandsT +31 78 69 69 000F +31 78 69 69 555royal@boskalis.comwww.boskalis.com


equipmentsheetPrins der Nederlandentrailing suction hopper dredgerConstruction/Classificationmain dataBuilt byMerwede ShipyardGross tonnage 18,091Year of construction 2004Length overall156.00 mClassificationB.V. I X HULL X MACH X AUT-UMSHopper dredger, unrestricted navigationDredging over 15 miles from shoreMON-SHAFTBreadthMoulded depthMax. draught empty28.00 m15.00 m4.63 mMax. draught Int. load line9.24 mMax. draught dredging load line 1 12.02 mfeaturesMax. draught dredging load line 2 12.84 mLong suction pipe with underwater pump.Carrying capacity (D.W.)30,445 t5 gravity-gantries.Hopper capacity 15,961 m 3Suction pipe diameterMax. dredging depthDischarge systemsSailing speed loadedTotal installed powerSand pump outputJet pump outputPump ashore outputPropulsion power sailingBow thruster2 x 1.00 m90.0 mbottom doors/pump ashore/rainbow installation16.2 kn19,500 kW5,000 kW3,000 kW8,800 kW14,000 kW1,400 kW


Prins der Nederlandentrailing suction hopper dredger01 — 2012 The information contained in this data sheet is for guidance purposes only and may be subject to changes. © Boskalis. All rights reserved.Side viewTop view deck levelRoyal Boskalis Westminster N.V.PO Box 433350 AA PapendrechtThe NetherlandsT +31 78 69 69 000F +31 78 69 69 555royal@boskalis.comwww.boskalis.com


equipmentsheetQueen of the Netherlandstrailing suction hopper dredgerConstruction/ClassificationBuilt byYear of construction 1998Year of modification 2009ClassificationVerolme Shipyard Heusden B.V./ KeppelShipyard SingaporeB.V. I X HULL X MACH X AUT-UMSHopper dredgerDredging within 15 miles from shore, orwithin 20 miles from port, dredging over15 miles from shore with H.S. ≤ 3.5mUnrestricted navigation Mon-shaftmain dataGross tonnage 33,423Length overallBreadthMoulded depthMax. draught Int. load lineMax. draught dredging load lineCarrying capacity (D.W.)230.71 m32.00 m15.90 m (Aft ship)/16.85 m (Mid ship)10.387 m13.674 m59,168 tHopper capacity 35,500 m 3features3,500 kW Submergible dredge pump unit in SB suction pipe.Optional dredging depth 83 m at PS, with submergible dredge pump.Optional dredging depth 115 m SB and PS.Optional dredging depth 160 m SB.Suction pipe diameterMax. dredging depthDischarge systemsSailing speed loadedTotal installed powerDredge pump outputJet pump outputPump ashore outputPropulsion power sailingBow thruster2 x 1,200 mmPS: 67 m / SB: 67/83 m withsubmergible dredge pump.24 Bottom door sections/Pumpashore/Rainbow installation/Back dumping16.0 kn27,634 kWSB: 7,000 kW (inboard andoutboard dredge pump in series)PS: 6,000 kW (inboard dredgepump only)3 x 1,000 kW2 x 6,000 kW23,000 kW2,650 kW


Queen of the NetherlandsTrailing suction hopper dredger01 — 2012 The information contained in this data sheet is for guidance purposes only and may be subject to changes. © Boskalis. All rights reserved.Side viewTop view deck levelRoyal Boskalis Westminster N.V.PO Box 433350 AA PapendrechtThe NetherlandsT +31 78 69 69 000F +31 78 69 69 555royal@boskalis.comwww.boskalis.com


equipmentsheetseawaytrailing suction hopper dredgerConstruction/Classificationmain dataBuilt byWärtsilä Turku ShipyardGross tonnage 12,962Year of construction 1986Year of modification 2001Length overallBreadth171.90 m22.00 mClassificationB.V. I X HULL X MACH Hopper DredgerDredging within 15 miles from shore orwithin 20 miles from portDredging over 15 miles from shore withH.S.


seawayTrailing suction hopper dredger01 — 2012 The information contained in this data sheet is for guidance purposes only and may be subject to changes. © Boskalis. All rights reserved.Side viewTop view deck levelRoyal Boskalis Westminster N.V.PO Box 433350 AA PapendrechtThe NetherlandsT +31 78 69 69 000F +31 78 69 69 555royal@boskalis.comwww.boskalis.com


equipmentsheetshoalwaytrailing suction hopper dredgerConstruction/ClassificationBuilt byYear of construction 2010ClassificationIntervak scheepswerf & constructie b.v.HarlingenI X HULL X MACH X Hopperdredger.Unrestricted Navigation.Dredging within 15 miles from shore orwithin 20 miles from port;or dredging over 15 miles from shorewith a significant waveheight restriction to 2.5 m. X AUT-UMSmain dataLength overall90.00 mL.p.p.83.09 mBreadth19,00 mMoulded depth7.25 mMax. draught Int. load line 5,93 m/ DWT 5392Max. draught dredging 6,82 m/ DWT 6750Hopper capacity 4,500 m 3Suction pipe diameter900 mmfeaturesShallow draft.Degassing system installed.Open bottom doors remain above the flat bottom of the vessel enablingvery shallow dumping.Highly manoeuvrable using rudder propellers.Fully computerised engine room with certificate for unattended operation.Automatic discharge valve can be fitted into the overflow.Dumping through bottom doors, shore discharge and bow bulb.Fully compliant with the latest international requirements such asmodern engines with low emissions.Oil pollution prevention equipment, and approved anti fouling paint.State of the art technology to minimise environmental impacts.Max. dredging depthSailing speed loadedTotal installed powerSand pump outputJet pump outputPump ashore outputPropulsion power sailingBow thruster30 m11 kn6,666 kW1,680 kW2*746 kW1,680 kW2*1,491 kW500 kW


shoalwayTrailing suction hopper dredger01 — 2012 The information contained in this data sheet is for guidance purposes only and may be subject to changes. © Boskalis. All rights reserved.Side viewTop view deck levelRoyal Boskalis Westminster N.V.PO Box 433350 AA PapendrechtThe NetherlandsT +31 78 69 69 000F +31 78 69 69 555royal@boskalis.comwww.boskalis.com


equipmentsheetshorewaytrailing suction hopper dredgerConstruction/Classificationmain dataBuilt byIHC Dredgers B.V.Gross tonnage 5,005Year of construction 2008Length overall97.50 mClassificationBureau VeritasBreadth21.60 mMoulded depth7.60 mMax. draught empty3.90 mfeaturesMax. draught Int. load line5.70 mMechanical driven dredge pump through maximum 2 main engines.Speed control between 70% and 100% of the nominal speed.Two jet pumps connected to each other through a combined shaft. Jetpumps are driven by the starboard main propulsion engine. Serialand parallel running of the pumps is possible.Max. draught dredging load line 7.10 mCarrying capacity (D.W.) 8,350 tHopper capacity 5,600 m 3Suction pipe diameter1,000 mmDegassing system has been applied.Three main engines have been installed. Two are dedicated forpropulsion and the third drives the dredge pump during trailing.During shore discharge, two main engines will drive the dredgepump and the third engine is available for propulsion/positioning ofthe vessel.Suction tube installed on port side.Accommodation is situated on fore ship.Engine room and pump room are situated in the aft ship.Max. dredging depthDischarge systemsSailing speed loadedTotal installed powerSand pump outputJet pump outputPump ashore outputPropulsion power sailingBow thruster33 mbottom doors/pump ashore/rainbow installation13.0 kn6,700 kW(3x2,025KW + 1x520KW +1x105KW)4,000 kW700 kW4,000 kW4,000 kW450 kW


shorewayTrailing suction hopper dredger01 — 2012 The information contained in this data sheet is for guidance purposes only and may be subject to changes. © Boskalis. All rights reserved.Side viewTop view deck levelRoyal Boskalis Westminster N.V.PO Box 433350 AA PapendrechtThe NetherlandsT +31 78 69 69 000F +31 78 69 69 555royal@boskalis.comwww.boskalis.com


EQUIPMENTSHEETSOSPAN DAUTRAILING SUCTION HOPPER DREDGERCONSTRUCTION/CLASSIFICATIONMAIN DATABuilt byAtelières et Chantiers de la MancheGross tonnage 1,546Year of construction 1978Year of modification 2001 / 2012Classification I 3/3 hopper barge coastal waters –deep sea occasionallyLength overallBreadthMoulded depthMin. draught emptyMax. draught Int. load lineMax. draught dredging load lineCarrying capacity (D.W.)72.80 m14.30 m3.80 m1.80 m2.80 m3.30 m1,850 tHopper capacity 1,500 m 3Suction pipe diameterMax. dredging depthDischarge systemsSailing speed loadedTotal installed powerSand pump outputJet pump outputPump ashore outputPropulsion power sailingBow thruster0.50 m32.00 m6 bottom doors/pump ashore/rainbow installation8.0 k3,200 kW1,000 kW450 kW1,000 kW2 x 600 kW300 kW


SOSPAN DAUTRAILING SUCTION HOPPER DREDGERThe information contained in this data sheet is for guidance purposes only and may be subject to changes. © Boskalis. All rights reserved.02 — 2013SIDE VIEWTOP VIEW DECK LEVELRoyal Boskalis Westminster N.V.PO Box 433350 AA PapendrechtThe NetherlandsT +31 78 69 69 000F +31 78 69 69 555royal@boskalis.comwww.boskalis.com


equipmentsheetwaterwaytrailing suction hopper dredgerConstruction/Classificationmain dataBuilt byMerwede ShipyardGross tonnage 5,393Year of construction 2001Length overall97.70 mClassificationI X HULL X MACH X AUT-UMS Hopperdredger. Dredging within 15 miles fromshore or within 20 miles from port.Dredging over 15 miles from shore withH.S.


waterwayTrailing suction hopper dredger01 — 2012 The information contained in this data sheet is for guidance purposes only and may be subject to changes. © Boskalis. All rights reserved.Side viewTop view deck levelRoyal Boskalis Westminster N.V.PO Box 433350 AA PapendrechtThe NetherlandsT +31 78 69 69 000F +31 78 69 69 555royal@boskalis.comwww.boskalis.com


EQUIPMENTSHEETWILLEM VAN ORANJETRAILING SUCTION HOPPER DREDGERCONSTRUCTION/CLASSIFICATIONMAIN DATABuilt byIHC Dredgers B.V.Length overall143.53 mYear of construction 2010Breadth28.00 mClassificationI X Hull X Mach. Hopperdredger. UnrestrictedNavigation. Dredging within15 miles from shore or within20 miles from port; or dredging over15 miles from shore with a significantwave height restriction to 3.0 m.X AUT-UMSMoulded depth13.50 mMax. draught Int. load line 8.00 mMax. draught dredging load line 10.00 mCarrying capacity (D.W.) about 22,000 tHopper capacity 12,000 m 3FEATURES2 Separate hoppers with pump room in between.Accommodation on fore ship.1 Suction pipe with submersible dredge pump at starboard side.2 Fixed deckcranes.Relative small draught.Suction pipe diameterMax. dredging depthDischarge systemsSailing speed loadedTotal installed powerSand pump outputJet pump outputPump ashore outputPropulsion power sailingBow thruster1 x 1,200 mmapprox. 62.00 mDumping through bottom doors(4), shore discharge and rainbow.15.4 kn13,870 kWInboard dredge pump:7,500 kWSubmersible dredge pump:3,500 kW2 x 1,250 kW7,500 kW2 x 6,000 kW2 x 700 kW


WILLEM VAN ORANJETRAILING SUCTION HOPPER DREDGER01 — 2012 The information contained in this data sheet is for guidance purposes only and may be subject to changes. © Boskalis. All rights reserved.SIDE VIEWTOP VIEW DECK LEVELRoyal Boskalis Westminster N.V.PO Box 433350 AA PapendrechtThe NetherlandsT +31 78 69 69 000F +31 78 69 69 555royal@boskalis.comwww.boskalis.com

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