Windea Leibniz, yno 310 from Ulstein Verft, a Service Operation Vessel for the offshore wind industry. (photo: Per Eide Studio)

WINDEA Leibniz

Built as Service Operation Vessel (SOV) for offshore wind. The X-BOW and X-STERN hull lines improve the ability to stay positioned with little movement for safe transfer of technicians and equipment to the turbines. Upgrade to CSOV 2022/23: Increased accommodation, installation of adjustable gangway and an aft gangway.

Owned By
Bernhard Schulte Offshore/ICBC Leasing
Built By
Ulstein Verft AS
Yard Number
IMO Number
Operated By
Bernhard Schulte Shipmanagement

Primary Specifications

88 m
18 m
Dead weight
3150 tonnes
Draught (max)
6.4 m
Speed (max)
13.5 kn
60 POB
Deck area
380 sqm

Additional Data

Fuel oil
Fresh water
Ballast water
Note: Specifications may have changed since the original completion date.
Classifications: DNV+1A1, SF, E0, OffshoreServiceVessel, DYNPOSAUTR, CleanDesign, COMF-V(3)C(3), DK(+), BIS, NAUT-AW, LCS-DC, BWM-T, HELIDK, Recyclable
  • Windea Leibniz with Ulstein Verft in the background, photo: uavpic com.
  • Windea Leibniz after the conversion from an SOV to a CSOV. Photo: uavpic com.
  • The CSOV Windea Leibniz in February 2023, photo: uavpic com.
  • Windea Leibniz as newbuilt, Yno 310 from Ulstein Verft, photo: Per Eide Studio
  • Windea Leibniz during construction in the Ulstein Verft dock hall.

Ship history

Delivered on 28 February 2017 and named at Ulstein Verft on 2 March by lady sponsor Dai Ling at ICBC Leasing. Yard number 310 from Ulstein Verft and X-BOW hull line design number 100 from Ulstein Group. Features the X-STERN solution for increased comfort, noise and vibrations when moving backwards in between the turbines at the wind farm. The vessel was one of the nominees for the 2017 Ship of the Year Award.

The usage of Service Operation Vessels (SOV) will improve the efficiency of service operations at offshore wind farms. The vessels function as reliable and environmentally sound platforms for wind farm operations and maintenance support, technician accommodation and transport, and the provision of exceptional levels of safe and reliable access to offshore installations.

The vessel's name honours the German mathematician, philosopher and physicist Gottfried Wilhelm von Leibniz, who in the 17th century proposed to use wind power to operate pumps. The vessel's first assignment was for Siemens Wind Power to service Vattenfall's offshore wind farms Sandbank and DanTysk in the German Bight and started in April 2017.

Matthias Müller, managing director at Bernhard Schulte Offshore, said:

?The vessel has the special X-STERN hull shape which allows to be positioned with the stern faced towards the weather instead of only with the bow. Her award-winning sister vessel Windea La Cour, which is working in the Dutch Gemini wind farm since August 2016, has already proven that this leads to improved weather resilience, greater operability and reduced power and fuel consumption while on DP mode next to the wind turbine.?

Windea Leibniz is the sister vessel to Windea La Cour.

2022, 31 October - 4 February 2023: Upgrade from SOV to CSOV at Ulstein Verft

With an increase of cabins from 60 to over 80, the vessel has transitioned from an SOV to a CSOV. Additionally, the yard has installed one extra pedestal on the stern for Baltic Sea operations to complement the existing North Sea pedestal. Read more: Windea Leibniz upgrade has been completed - Ulstein

2023: Still active - IMO 9769037

Windea Leibniz DJI 0940 uavpic com

Get in touch

Lars Ståle Skoge DSC4468 comp bw

Lars Ståle Skoge

Commercial Director
Ulstein Design & Solutions AS
Kolbjørn Moldskred DSC4422 comp bw

Kolbjørn Moldskred

Sales Manager Newbuild
Ulstein Verft AS
Lars Ståle Skoge DSC4468 comp bw

Lars Ståle Skoge

Commercial Director

Ulstein Design & Solutions AS
Kolbjørn Moldskred DSC4422 comp bw

Kolbjørn Moldskred

Sales Manager Newbuild

Ulstein Verft AS