Shore power connection

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'Thialf' and 'Sleipnir' - Heerema Marine Contractors

Bakker Sliedrecht has electrified the crane vessels Thialf and Sleipnir of Heerema Marine Contractors so that they can be powered with green shore power. Wind turbines at the quay of the Calandkanaal in Rotterdam generate this sustainable energy. The shore power connection allows the vessels to turn off their diesel generators, which significantly reduces noise and CO2, nitrogen, sulphur dioxide, and particulate matter emissions. The electrification of the vessels is part of a shore power project, in which, in addition to Heerema, power company Eneco, the Port of Rotterdam Authority, and the City of Rotterdam are also participating.

On-board modifications to use sustainable shore power

In order to use sustainable shore power, Bakker Sliedrecht carried out various adjustments on board. Bakker Sliedrecht has, among other things, supplied the required transformers, shore connection switchboards and interface to the existing power distribution system. Bakker Sliedrecht has also expanded the existing installations and switchboards and installed the low and high voltage cables. The voltage has been converted from 11 kV to 4.16 kV. 


The construction of electrical infrastructure on vessels and land installations is a specialty of Bakker Sliedrecht, whether it concerns high, medium or low voltage. In addition to Heerema’s crane vessels, more ships and companies in the port of Rotterdam will be able to use sustainable shore power in the future. In these projects, Bakker Sliedrecht can also play a part.

More information?

Scope of the project:

  • Supply of the required transformers
  • Supply of the switchboards
  • Supply of the interface power distribution system
  • Expansion of existing installations and switchboards
  • Installation low and high voltage cables


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Contact us Or call +31 184-436666

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