Maritime disputes arise over Great Sea Interconnector surveys

The French research vessel Abeille Marengo departed from Heraklion, Crete, on November 10, 2026, to conduct seabed surveys for the Great Sea Interconnector (GSI), a project intended to link the power grids of Greece, Cyprus, and Israel. The mission involves instrument calibration followed by surveys in international waters. This development was accompanied by a diplomatic standoff, as Turkey issued a NAVTEX message claiming the surveys required its consent and that it had granted permission. This move was rejected by both Greek and Cypriot authorities.

Greek and Cypriot officials declared the Turkish NAVTEX void, asserting that the project operates solely under their own legal jurisdictions. The Larnaca Joint Rescue Coordination Centre and Greek authorities issued counter-NAVTEX notices, maintaining that they are the only competent bodies authorized to grant permissions for these maritime operations. Cypriot Defence Minister Vasilis Palmas emphasized that the project is of significant geopolitical and European importance and will continue in strict accordance with the international law of the sea.

The research vessel is expected to reach the designated survey area by November 12 or 13, with work potentially extending into early 2027. While Turkey’s actions have sparked diplomatic friction, Cyprus and Greece maintain their determination to advance the infrastructure project without allowing the rhetoric to escalate into a military or hostile climate.