Acta Marine

Serving the construction and lifetime of offshore wind farms

Acta Marine is an independent maritime service provider. Based in the Netherlands, we are a trusted partner to clients worldwide working on offshore and coastal water projects in the oil & gas, dredging & construction and the offshore wind market...

Acta Marine
Het Nieuwe Diep 39d
1781 AE Den Helder

Simon Anink - General Manager Commercial Offshore
+31 (0)88 032 09 00

Acta Marine is an independent maritime service provider. Based in the Netherlands, we are a trusted partner to clients worldwide working on offshore and coastal water projects in the oil & gas, dredging & construction and the offshore wind market. As a family-owned business, our focus is long-term. We build strong relationships with our clients. Because safety and quality are the key principles of how we work, we continually invest in the welfare and training of our personnel as well as upgrading and maintaining our fleet.

The team
Established in 1970, Acta Marine is backed up by more than 45 years of experience. At the core of the company is a team of 250 dedicated personnel.

Total service
Our versatile fleet delivers service to the whole lifecycle of offshore wind farms. We have more than 50 vessels including:

  • DP2, Walk-to-Work CSV;
  • DP Multicats;
  • shoalbusters;
  • crew transfer vessels (CTV’s);
  • survey vessels & barges.

Preparation & survey
Our DP Multicats and survey vessels support the initial stages of offshore wind farm development:

  • preliminary surveys;
  • geo-technical research;
  • UXO investigations and clearance.

Construction and O&M
Providing tailor-made solutions: we have a suitable vessel for every type of construction and O&M requirement including balance of plant maintenance.

Our DP2, Walk-to-Work Construction Support Vessel Acta Orion, together with our CTV’s offers construction and service operation support. The Acta Orion has proven capabilities:

  • 80 POB accommodation;
  • cargo space for over 20 TEU’s;
  • comfort class II;
  • motion compensated gangway operations over 2.50 metres Hs;
  • crane ten tonnes at 17.50 metres.

Cable operations
Between 2 and 20 metres waterdepth, we can support numerous cable related activities:

  • (re)burial;
  • recovery;
  • shore-ends;
  • shallow water passages;
  • remedial work.


  • Walk-to-Work vessel Acta Orion: in 2016 over 6,000 TP connections with motion compensated gangway;
  • crew transfer vessels: since 2006 over 500,000 safe crew transfers;
  • DP Multicats: since 2010 over 50 finalised projects in offshore wind farms (i.e. surveys, cable lays, UXO clearances, ROV operations, etc.).



Related news

Acta Auriga Arrives at Ulstein Verft for Final Construction


The Ulstein SX195 hull of Acta Marine’s new walk-to-work (W2W) vessel Acta Auriga has arrived from Crist shipyard in Poland to Ulstein Verft in Norway, where the vessel will be outfitted, commissioned and tested before joining Acta Marine's fleet. Image source: Ulstein The hull is now in Ulstein Verft’s sheltered dry-..

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Comfort in Offshore Wind Working Conditions


By Jiska Bazuin, Operations Manager at Pronomar Europe is the leader of the growing market for the offshore wind energy. Most of the activities take place in the wet conditions of the North Sea. As the people work in varying temperatures and under dire weather conditions, it is most important that their personal protec..

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Acta Marine Assists in UXO Survey Projects


Acta Marine has deployed two vessels on unexploded ordnance (UXO) survey projects for two future European subsea cable routes. "In preparation for offshore wind and power cable projects, operators want to have their proposed cable routes surveyed for potential unexploded ordinance,” said the company's Commercial Manager Ber..

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Acta Auriga On Track to Join Acta Marine W2W Constellation


The construction of Acta Marine’s Ulstein SX195 walk-to-work (W2W) construction support vessel is progressing well and on schedule at Crist shipyard in Poland, the Den Helder-based company said, adding that the DP2 vessel will sail under the name Acta Auriga. Upon delivery, the Acta Auriga will join Acta Orion, her semi-sis..

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Acta Marine's New CSV Shaping Up in Polish Shipyard


Hull construction on Acta Marine’s new wind farm construction support vessel (CSV) passed the halfway mark this week at Crist shipyard in Poland, Acta Marine informed, adding that the work is progressing well and on schedule. The hull construction of the company's new new Ulstein SX195 walk-to-work vessel started in Februa..

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Acta Orion Accommodates Siemens Team at Race Bank


Acta Marine informed today, 20 July, that its walk-to-work construction support vessel Acta Orion is providing accommodation and walk-to-work for Siemens on DONG Energy's Race Bank offshore wind farm. Siemens is currently installing and commissioning 91 of its 6MW turbines, with the work planned to be completed before end of ..

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