Croatia Shipyard Delivers Powerful Dredger
Uljanik Shipyard delivers the 26,000 dwt trailing suction hopper dredger 'Bartolomeu Dias' to Luxembourg's Jan De Nul S.A.
This is the second such dredger constructed at the yard, with a LOA of 147.6 m and breadth of 30 m.
The ship and the working equipment aboard Bartolomeu are powered by two main diesel engines, each having a power of 7200 kW, while the depth from which the material can be sucked lies in the 42-50 meter range.
The dredger pump is driven by a two-coil electromotor of power 8 MW and controlled by two independent frequency converters. For the production of electrical energy two high tension shaft generators are mounted, each of 7 MW power, as well as one auxiliary generator of power 1.4 MW manufactured in Uljanik TESU. Three high tension engines of power 3.3 MW are also installed and manufactured in KONÄŚAR.
Three high tension switchboards boards, six high tension transformers, six low tension switchboards boards, twenty sub-panels, as well as control panels are installed. All of these are networked through an automatisation and surveillance system which controls different plant systems for ship operations. The electrical-energy system and the automatisation and surveillance system are in their entirety the work of the Uljanik project team, while the manufacture of low tension equipment has been carried out by specialized companies from Croatia. 

This is the first ship delivery in Uljanik this year while four more deliveries are planned by the end of the year.
