Acta Auriga offshore wind farm

Acta Auriga

A CSV/SOV for construction support and W2W service operations. Efficient and safe in significant wave-heights up to 3m. Equipped with a telescopic motion compensated gangway system mounted on an integrated tower with height adjustment and a personnel/cargo lift. 3D motion compensated crane with 6t lifting capacity.

Owned By
Acta Marine B.V.
Built By
Ulstein Verft AS
Yard Number
IMO Number
Operated By
Acta Marine B.V.

Primary Specifications

93.4 m
18 m
Dead weight
3,200 tonnes
Draught (max)
6.0 m
Speed (max)
13.5 kn
120 POB
Deck area
500 sqm

Additional Data

Indoor cargo area main deck
Outdoor cargo area A deck
Max deckload main deck, approx
Max deckload A deck, approx.
3D Motion compensated Crane
Access & Cargo Tower
Hs 3
Motion compensated gangway
Hs 3
Dynamic positioning
Note: Specifications may have changed since the original completion date.
Classifications: SF, E0, OffshoreServiceVessel, Strengthened(DK, HA), DYNPOS(AUTR), Clean(Design), COMF(C-2,V-2), NAUT(OC), BWM(T), BIS, Recyclable, Battery(Power)
  • Acta Auriga leaving the construction yard, Ulstein Verft, for her new work base at Eemshaven.
  • The CSV/SOV Acta Auriga on sea trial.
  • The X-STERN of the Acta Auriga, photo by Marius Beck Dahle.
  • The offshore wind service vessel, Acta Auriga, dynamically positioned during her sea trial.

Ship history

The vessel has been designed as a construction support vessel (CSV) and can also work as a Service Operation Vessel (SOV). The vessel can take on assignments in commissioning and construction in the offshore wind farm installation phase, and provide Walk-to-Work transfer of personnel and cargo. The vessel can also service other offshore areas such as oil and gas. Acta Auriga has been arranged for up to 120 persons on board (POB), accommodated in 80 cabins. Designed for offshore stays of approximately 30 days. Tower, crane and gangway are SMST deliveries.


2018, 28 March: The vessel was delivered by Ulstein Verft to Acta Marine.
2018, 9 May: Started work as a Service Operation Vessel (SOV) for Ocean Breeze Energy on the offshore wind farm BARD Offshore 1, Germany. The vessel has been awarded a 3-year charter for Operations and Maintenance work.
2018, 20 June: Naming ceremony in Emden, Germany.

Read more about the project: Building Acta Auriga 

2021, 07 April: Completion of the BARD Offshore 1, O&M assignment. Read more on Acta Marine's web:

Acta Auriga successfully completed the Bard Offshore project (, and below:

The project has been intense especially considering the fact that Auriga has replaced two maintenance vessels that were initially performing the O&M scope on the project, as can also be seen from the following project statistics:

? 9,300 gangway connections

? 44,600 persons transferred

? 43,600 cargo pieces lifted

? 2,500x around the globe in distance sailed

? 230,000 meals served

? Zero LTI

Acta Auriga will, after a short maintenance stop at Niestern Sanders, continue to work in offshore wind in the UK as construction support vessel.

Kolbjørn Moldskred DSC4422 comp bw

Kolbjørn Moldskred

Sales Manager Newbuild

Ulstein Verft AS
Lars L Olsen DSC4221 compbw

Lars Lühr Olsen

Managing Director

Ulstein Verft AS