Croatian shipbuilder Uljanik has completed installation of the cutter ladder for Newbuilding 500, a self-propelled cutter suction dredger the shipyard is constructing for their longtime partner Jan De Nul Group.
The shipyard reported that on Monday, July 31st the cutter ladder – one of the most complex parts of the ship – was successfully installed.
According to the yard, it consists of 7 sections, the thickness of the material at certain points exceeding 150 mm, and its trunnion, tilting and sea fastening points require on site machining to achieve exact measurement.
Cutter ladder is equipped with two main lines, dredge pump line and cutter line. The underwater dredge pump of 8500 kW is powered by two motors of 4250 kW over the gearbox and is forming the dredge pump line.
Two additional motors with a gearbox of almost 300 ton, which are connected to the cutter head over the shafts, are forming the cutter line which is used for dredge the sea soil, reported the yard.
The shipbuilder also added that the launching ceremony for the vessel is scheduled for late August.