Tersan Shipyard announces the delivery of NB1122 Acta Gemini, the third vessel in a distinguished four-vessel series of Walk-to-Work (W2W), DP2 Construction Service Operation Vessels (CSOVs) built for Acta Marine. Following her completion, Acta Gemini has departed from Tersan’s Yalova facilities to commence operations.

This milestone highlights Tersan’s ability to deliver highly complex offshore vessels with advanced technology, sustainable features, and superior craftsmanship. With decades of experience and modern infrastructure, Tersan has established itself as a trusted partner for international operators seeking innovative and future-ready shipbuilding solutions.

Acta Gemini is purpose-built to support offshore wind construction and maintenance activities. The vessel accommodates up to 88 personnel and is equipped with advanced offshore access systems, a helideck, and two daughter crafts, ensuring safe and efficient transfer of technicians to offshore installations. In line with the industry’s transition toward low-carbon operations, the vessel features methanol dual-fuel main engines and methanol-ready design, reflecting Tersan’s commitment to sustainability and innovation.

A LEADING BUILDER
Mehmet Gazioğlu, CEO of Tersan Shipyard, stated:

“Delivering Acta Gemini as the third vessel in this series demonstrates Tersan’s strength in engineering, project management, and sustainable shipbuilding. We are proud to contribute to Europe’s energy transition and to reinforce our position as a leading builder of advanced offshore vessels.”

Rob Boer, CEO of Acta Marine, added:

“With Acta Gemini, we continue to build on the foundation laid with Pegasus and Hercules. The vessel reflects the confidence we place in Tersan’s expertise and the strength of our cooperation.”

With Acta Pegasus and Acta Hercules already delivered, and Acta Gemini now entering service, the final vessel in the series, Acta Aquarius, is scheduled for delivery later in 2026. This four-vessel program underscores Tersan Shipyard’s role as a key contributor to the modernization of the global offshore energy fleet.

About Tersan Shipyard

• Tersan Shipyard is one of Turkey’s largest newbuild shipyards, employing more than 5.000 people across three facilities, located in Istanbul and Yalova, Turkey and Leirvik, Norway.
• With a proven track record of delivering over 150 vessels, Tersan specializes in the construction of technologically advanced offshore, fishing and various other types of vessels for international clients, predominantly in Northern Europe.
• Tersan has extensive experience in building of alternative-fueled and battery-powered vessels as well as a wide range of high value-added niche vessels of diverse types and sizes.
•  Tersan has been recognized as the export leader of Turkey in new shipbuilding sector for ten of the past twelve years.

About Acta Marine

• Acta Marine is a leading provider of Walk to Work (W2W) and offshore support vessel solutions for the Offshore Wind, Oil & Gas, and Marine Infrastructure sectors.
• With a modern and specialized fleet, Acta Marine is committed to providing safe, reliable, and efficient services to its clients worldwide. T
• he company is headquartered in Rotterdam and has operational offices in France and the UK.