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Friction in the Cyprus EEZ: Analyzing Conflicting Claims under the Law of the Sea*

[Nikolaos A. Ioannidis is a doctoral candidate in Public International Law at the University of Bristol]

Αs of October 20, a Turkish survey vessel, the “Hayreddin Barbaros Pasa”, accompanied by a frigate of the Turkish Navy, has been carrying out seismic surveys within the continental shelf and the Exclusive Economic Zone (“EEZ”) of Cyprus.The area of operarions is very close to block 9, where the Italian oil company ENI is drilling for hydrocarbons on behalf of the Republic of Cyprus. Although these activities have sparked rigorous reactions on the part of the Republic of Cyprus, the “Barbaros” has yet to terminate its operations.

Prior to analyzing the ongoing situation, I’ll begin with a short review of the legal regime of the waters under consideration. According to customary international law and the Law of the Sea Convention 1982 (“LOSC”) a coastal state maintains an inherent right to a continental shelf, which extends up to a distance of 200 nautical miles (“nm”) measured from the coast. In addition, a littoral state is also entitled to claim an EEZ of a breadth of 200nm. In these zones, the coastal state enjoys exclusive sovereign rights for the purpose of exploring and exploiting the natural resources, either living or non-living, in its seabed and subsoil (articles 58(1)(a), 77(1)(2) and 81). Consequently, no other state can set forth assertions over the natural resources in another state’s maritime zones. Nevertheless, in both the continental shelf and the EEZ the freedom of navigation shall not be hindered (articles 58(1) and 78) as those waters, in essence, form part of the high seas. This is a trade-off aiming at striking a balance between the viewpoints of the great maritime powers on the one hand (which were reluctant to concede expansion of state jurisdiction over the high seas) and the smaller states on the other hand (which sought extended maritime rights in order to safeguard the natural resources of their sea waters). Readmore..