Hydrographic Research Vessel Geo Ranger

7 March 2020 Geo Ranger was successfully launched at shipyard Royal Niestern Sander:


The 41-metre Geo Ranger has been designed in cooperation with Conoship International B.V. for

Geo Plus B.V. She will be available for charter by parties conducting hydrographic surveys,

such as companies involved in dredging and the building and maintenance of offshore wind farms.

The vessel will be fitted out with the latest sustainable technologies including advanced

diesel-electric propulsion, LED lightning and heat recovery from the cooling water of the diesel

generators. She will also not have an emergency diesel generator on board; emergency power will

instead be supplied by batteries. The vessel is built under the supervision of Lloyd's Register.

D&A® electric was responsible for the design, implementation, commissioning and turn-key delivery

of the complete drive system according to the unique D&A® Eprop® concept, comprising: 

  • 1 D&A® drive network panel, based on the D&A® Eprop® concept
  • 2 Brake resistors to absorb reversing energy of the propeller
  • 2 Brake resistors to absorb reversing energy of the bow thruster
  • 2 D&A® bridge control panels for D&A® Eprop® (PS and SB)
  • 2 D&A® bridge control panels for D&A® Ebow
  • 2 D&A® static converters for the normal board net of the ship
  • 1 Harbour transformer
  • 2 Supply transformers for LARS supply and ROV supply
  • 1 D&A® HMI (Human Machine Interface)
  • 2 Electric motors for D&A® Eprop® propulsion
  • 2 Electric motors for D&A® Ebow (tunnel thruster)
  • 4 Aux generators for drive network supply, suitable for connection to a diesel engine
D&A® Epro®p has major advantages compared to existing propulsion systems.
Due to these advantages, D&A® Eprop® gives the ship a significant lower fuel consumption.
The high thrust/power ratio of D&A® Eprop® is available throughout the entire use of the propulsion.
This gives extreme acceleration, bollard pull capabilities and a higher speed of the ship; all combined
in one single propulsion system. Depending on the use of the ship, these savings can get as high as
40% in fuel, apart from the savings in maintenance costs. 






Logical solutions... for shipping

The Eprop system is a frequency-controlled diesel-electric drive that allows a normal barge to use up to 40% less fuel without any loss of speed. This result is determined by a different way of looking at the entire vessel, it’s normal sailing behaviour and the desired speed. The propulsion train is adjusted accordingly and shows significantly better fuel returns.





Want to know more?

Would you like more information? Do you have questions about the possibilities in your specific situation? Contact us and we will gladly provide you with efficient ideas.

Brouwerstraat 28    2984 AR   Ridderkerk   The Netherlands
tel.: +31 (0)180 419001   fax: +31 (0)180 419707   e-mail: info@da-electric.nl