IHC HOLLAND

XIN HAI LONGPerformance of CSD MARTINA in Turkey

UILENSPIEGEL

Wear resistance IHCs How to select

Ports and DredgingP u b l i s h e d b y I H C H o l l a n d i n 2 0 0 3 . E 1 5 9

RESTYLING

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The articles of Ports and Dredging from issue 156 onwards are available on our website www.ihcholland.comunder the heading Ports and Dredging

Chinas first jumbotrailer: XIN HAI LONG

Multi deployable trailer UILENSPIEGEL

UILENSPIEGEL

Performance of the CSD Beaver MARTINA Birecik project, Turkey

Wear resistance, the challenge of wear in dredging

IHC Hollands How to select brochure

Assignment of the worlds largest deep dredging installation

TONG TAN

IHC Beaver 6516 C Cutter Suction Dredger

On order

Recently delivered

MELLINA

VOLVOX OLYMPIA

XIN HAI LONG

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Ports and Dredging is published by IHC Holland.

The articles appearing in this journal may be

reproduced in whole or in part on the condition

that the source is quoted.

Editorial and correspondence address:

IHC Holland, P.O. Box 204,

3360 AE Sliedrecht, The Netherlands.

Copyright 2003. IHC Holland

ISDN: 0166-5766

Colophon

Coordination:

R. van Krimpen - Baudesson, PR IHC Holland.

Graphic design & production:

Die Haghe/AM&S, The Hague, The Netherlands.

Printed by:

Van Marken Delft Drukkers, The Netherlands.

Editorial board:

N. van Drimmelen, A. Korevaar,

R. van Krimpen - Baudesson,

E.J.A. van Leeuwen, S.G. Mensonides,

M. Pos, A. Roelse, P. Verbeek, C.J. Verkaik

The articles were published with the cooperation of:

C.H. van den Berg (IHC), W. Bezemer (IHC),

J. van Emmerik (IHC), M. Alvarez Grima (IHC),

A.C. Korving (IHC), P.M. Vercruijsse (IHC)

and H. Zchling

Cover: 12,888m3 Trailing Suction Hopper Dredger XIN HAI LONG

IHC Holland will be present

at Europort 2003

Amsterdam RAI - The Netherlands

18 - 22 November 2003

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China's first jumbotrailer: XIN HAI LONG ('sea dragon')

Perpetually fighting siltShanghai is Chinas biggest port, despitedepending on one the worlds most

enthusiastically silting rivers for its link tothe ocean. Shanghais main approaches,a two-lane channel through the north

passage of the Yangtze estuarys SouthChannel, has been open for navigationsince 1984. The channel, maintained at a

Ceremony 28 November 2002

On 15 November 2000 IHC Holland and CHEC/the Shanghai Waterway Bureau signed a building contract for

delivery of a 12,000m3 trailing suction hopper dredger in exactly two years time. In the early stages of building it

was, for spiritual reasons, decided that the hoppers size should be extended to 12,888m3. The more digits eight

are involved, the happier the ship will sail, or so Chinese conviction has it. This generated quite some extra

engineering for the already completed design. The enlarged hopper gives a total load capacity of 18,978 tonnes.

With suction tubes extendable to 35m and 45m, the vessel is designed for maintenance dredging in the mighty

river Yangtze and its approaches, as well as for reclamation jobs. The vessels maiden job actually involves sand

winning for Shanghais new coastal container terminal. XIN HAI LONGs facts and figures, as well as the very

special party thrown at her launch and naming ceremony by HRH Princess Margriet, are broadly described in

P&D 158. What could not be described then because we didnt know yet, is that the young dragon dredges like a

hungry Hippo, filling its 12,888m3 hopper with sand within an hour. That was on acceptance trials in Dutch waters.

After further trials in homewaters, the vessel was delivered on 28 November 2002 in a grand ceremony.

This article will zoom in on recent experiences with the ship and on some of its peculiar traits.

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depth of 7 metres below chart datum witha bottom width of 250 metres, is suitablefor 20,000TDWT vessels at all states ofthe tide. The natural water depth over thebar between Shanghais Huang-pu riverand the Yangtze estuary is 6 metres. TheShanghai Dredging Company is dredging12 million m3 a year to increase this depthby just 1 metre. Apparently increasing thewater depth structurally to 12.50 metresand a bottom width of 350 metres to take4th generation container vessels(3,000TEU) would require a majorproject. The Yangtze Estuary Deepwater Channel

Regulation Project will in three phasesincrease the lanes from a 93km long 7metres deep channel to a 159km long and12.50 metres deep channel. In phase one,completed in 2000, a 3.5km submergeddike, a 1.6km south dike, jetties on bothsides of the channel (totalling 60km) andsix groynes were constructed toconcentrate the tides salutary scouringon the shipping lanes. After a year ofadditional capital dredging the waterdepth had increased to 8.5 metres andthe number of ships passed more thandoubled, from an average of eight to 20.For phases two and three the capacity of

Shanghais trailing suction hopperdredger fleet would have to be drasticallybeefed up. Apart from a number ofconversions, new trailing suction hopperdredgers were ordered, the biggest ofwhich to date being the 12,888m3

XIN HAI LONG.

Wok and WattsAs usual in shipbuilding projects likethese, the client sent a team of eightengineers, led by Mr Zhang Zhi Xin. The gentlemen turned out to be highlyknowledgeable and constructive in theirapproach. They actually played an active

XIN HAI LONG - 28 November 2002

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role in finding solutions, especially whenafter the signing of the contract designparameters had to be changed. XIN HAILONG has been built by IHC Kinderdijkentirely, from keel to masthead. Thiswould for any other shipyard be unusual,in these days of outsourcing of steelstamping to cheap labour countries.Since trailing dredgers begin to bespecial from the first steel plates of theirvery bottom, however, IHC prefers to keepthe building process in its own hands to ensure the best quality.From a distance there seems to be notmuch difference between XIN HAI LONGand any other IHC-built state-of-the-art13,000m3 trailer. The main superstructureis forward, the suction tubes quite far aftand construction details, especially those

concerning the hulls integrity and safety,are of the trusted better-than-needed IHCquality. For instance, the all-welded hullhas a double bottom in the bowthrusterroom, between collision bulkhead andforward hopper bulkhead, as well as aft ofthe hopper, under engine, pump andtechnical rooms. Centre and sidekeelsons run the vessels full length as faras practical, also adding to structuralstiffness of the vessels machines stuffedaft part. Inside the deckhouse, things lookdecidedly Oriental, with accommodationfor a relatively large complement of 50,though she is actually sailing with 45. Inthe galley, a giant wok resides alongsidea big cooking-range. Thorough attentionfor sound insulation further helps tomake the new sea dragon a verycomfortable ship for its crews.XIN HAI LONG may be a fine ship to be on,but she actually is designed as a workingvessel, for gobbling up as much sedimentas possible in exactly the right place andin the shortest possible time against thelowest possible costs. XIN HAI LONGstwo turbocharged intercooled 12 cyl.main diesels of 9,000kW each drivedirectly the 4,600mm cp-propellers infixed nozzles as well as, from theirforward end, the two double walled IHCdredgepumps with four-bladed impellers.The spoil is loaded through two 1,200mmsuction tubes. Each engine delivers to itspump 2,200kW at 181rpm when trailingand 6,550kW at 289rpm while pumpingashore through bow-coupling orrainbowing. For delivering spoil ashore,both pumps can work in series.Propulsion as well as dredging controlsystems are controlled from the

wheelhouse. In the engine room we alsofind a 920kW auxiliary diesel for the ACauxiliary generator and anemergency/harbour generator diesel.

Dredge and controlTwo high efficiency single walledcentrifugal jetwater pumps, driven by a1,320kW electric motor, serve for dilutingthe hoppers contents during unloadingas well as for softening up sediments. For compacted fine sands IHC-Californiantype dragheads are provided and IHC-

universal type dragheads with steelchisel points for hard compacted soils. A clever combination of trunnion elbows,vertical and horizontal hinges, turningglands and hinged, self-adjusting visorsensures that the dragheads will remainflat on the seabed at all times, workingmaximally, even when the ship is turningand the dragarm is swung away from thehull. The control system prevents thedragarm being dragged under the hull: itwill then automatically be hoisted. Thesetraits ensure a dredged trail as smooth aspossible, as well as making it easier toflatten out grooves.The hopper has two cylindrical overflowducts, continuously adjustable from6,000m3 to 12,888m3 and controlled fromthe dredgemasters console in thewheelhouse. In order to allow dumpingspoil in shallow water, the hopper bottomdoors have pre-dumping doors, which donot protrude under the vessels bottomwhen open. When such pre dumping hassufficiently decreased the sea dragonsdraught, the two rows of hydraulicallymoved box-section bottom doors cansafely be opened.IHC Systems had a grateful customer inXIN HAI LONG and did a magnificent job.The ships state of the art IntegratedHopper Control System (IHCS) isdesigned to fully integrate dredging and

Navig