French research vessel Abeille Marengo begins survey for Great Sea Interconnector

On November 10, 2026, the French research vessel Abeille Marengo departed from the port of Heraklion, Crete, to conduct seabed surveys for the Great Sea Interconnector (GSI) project. The mission, commissioned by Nexans, aims to map the seafloor along the planned route for the electrical interconnection cable between Greece and Cyprus, specifically targeting waters south of Kasos and Karpathos. The vessel will initially spend approximately 24 hours in territorial waters performing calibration tests on its sensors and equipment before proceeding to the designated survey area.

This mission follows previous efforts in the summer of 2024, which were halted due to tensions in the region. The project, managed by Great Sea Interconnector S.A. and the Independent Power Transmission Operator (IPTO), proceeds under NAVTEX notices issued by Greek and Cypriot authorities. While reports suggest the departure faced minor delays—initially attributed to weather but likely linked to ongoing diplomatic negotiations involving a French-brokered formula—there has been no official reaction from the Turkish government. The situation remains sensitive due to Turkey's historical interference in the area, and observers are monitoring whether Ankara will attempt to intervene or obstruct the ongoing research activities.