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Hamburg Port Authority (HPA) puts new, custom-built dredger 'Modi' into service

The 35m long and 13m wide Modi is for operation to 23m depths and will remove sediment in parts of the German port which are difficult to reach with conventional equipment. The dredge is mounted on a self-driven pontoon with adjustable stilt legs for location manoeuvering. The new unit joins a bucket dredger already in service in the Port of Hamburg and is a modified Liebherr cable grab dredger specially built for HPA by Dutch shipyard Ravestein BV. HPA’s Martin Boness told Maritime Journal the Dutch won the job after all EU shipyards were invited to tender but he gave no further indication why the yard was chosen. HPA chief Wolfgang Hurtienne said sediment management was one of the central jobs of the Authority. About five million m3 of sediment were deposited in the port every year, he said. The Type Liebherr HS 8100 HD Modi dredge combination is driven by a D 865 A7 SCR motor of 390kW and is capable of round-the-clock operation with a crew of 3-4. The HPA said it cost about €5 million and Ravestein MD David Ravestein was quoted as saying it was the first order of its kind from the HPA for the Dutch yard. http://www.maritimejournal.com/news101/dredging/dredger-among-new-hamburg-workboats