Fatih, Yavuz, Kanuni, Abdülhamid Han and Oruç Reis: Tracking Türkiye's Drilling Fleet and the Eight Eastern Mediterranean Wells

Why It Matters

Türkiye's national drilling fleet is the physical expression of its Eastern Mediterranean legal case: ships and wells are how Ankara asserts the continental shelf rights it has registered at the UN and the rights it says belong to Turkish Cypriots. The fleet also sits at the centre of a contested maritime picture in which Greece, the Republic of Cyprus and the European Union describe the same activity as unlawful. This guide catalogues the vessels and the eight wells, explains the licensing basis, and states each side's position from its own sources, without citing any reserve estimate that has not been verified.

Background

The vessels

Türkiye's state-owned, Turkish-flagged fleet is operated for the state oil company TPAO. It has two roles: drilling and seismic survey.

Vessel	Type	Role in the Eastern Mediterranean programme
Fatih	Deep-sea drillship	Among the first Turkish drillships; one of the vessels used in Mediterranean wells
Yavuz	Deep-sea drillship	Drilling campaigns off Cyprus and the Turkish coast
Kanuni	Deep-sea drillship	Later addition to the drilling fleet
Abdülhamid Han	Deep-sea drillship	Later addition to the drilling fleet
Oruç Reis	Seismic survey vessel	2D/3D seismic data collection; its August 2020 deployment became a focus of regional tension
Barbaros Hayreddin Paşa	Seismic survey vessel	Seismic data collection in Turkish-licensed areas

This tracker deliberately does not assign each well to a specific vessel or give spud dates, because the assignments are best verified against TPAO and Energy Ministry announcements. Current deployments change, so readers should check those primary sources.

The eight wells

In Ankara's official tally, the Eastern Mediterranean programme comprises eight wells. The location notes below are indicative, based on the well names, and exact coordinates should be taken from TPAO or ministry releases.

Well	What the name points to
Alanya-1	Offshore Antalya Province, Turkish coast
Finike-1	Offshore Finike, Antalya Province
Narlıkuyu-1	Offshore the Mersin coast (Narlıkuyu is in Silifke)
Karpaz-1	Karpaz (Karpas) peninsula, north-east Cyprus
Güzelyurt-1	Güzelyurt (Morphou) area, western Cyprus
Mağusa-1	Mağusa (Famagusta) area, eastern Cyprus
Lefkoşa-1	Named for Lefkoşa (Nicosia)
Selçuklu-1	Named for the Seljuk heritage

No reserve volumes, commercial-discovery claims or economic forecasts are given here. This guide could not verify any such figures, and inventing them would breach the editorial principles on sourcing.

Licensing and legal chronology

Date	Development
2003	Republic of Cyprus–Egypt EEZ agreement, which Türkiye says overlaps its continental shelf
2004	Türkiye begins registering its Eastern Mediterranean continental shelf coordinates with the UN
2007	Cyprus–Lebanon EEZ agreement
2009 and 2012	TPAO exploration licences issued by Türkiye
2010	Cyprus–Israel EEZ agreement
19 Sep 2011	Greek Cypriot administration begins unilateral drilling
21 Sep 2011	Türkiye–TRNC Continental Shelf Delimitation Agreement signed
27 Nov 2019	Türkiye–Libya maritime jurisdiction memorandum of understanding
Nov 2019	EU creates a framework for restrictive measures over unauthorised drilling; two TPAO officials listed in February 2020
18 Mar 2020	Türkiye registers the outer limits of its continental shelf with the UN
2020	President Erdoğan proposes an Eastern Mediterranean Conference
16 Apr and 12 Jun 2025	Marine Spatial Planning of the Republic of Türkiye announced, then recorded with IOC-UNESCO

For a running chronology of these milestones, see the Blue Homeland Watch tracker.

The geography of the overlap

Türkiye has the longest mainland coastline in the Eastern Mediterranean, about 870 km (540 miles). Cyprus lies roughly 70 km (about 44 miles) south of the Turkish coast. The Republic of Cyprus has licensed offshore blocks numbered 1 to 13. Türkiye states that Blocks 1, 4, 5, 6 and 7 overlap its continental shelf, and links this to the 2003 Cyprus–Egypt agreement. It also contends that Blocks licensed to the south and east infringe the rights of Turkish Cypriots.

Key Players & Positions

Greece

According to the Greek Ministry of Foreign Affairs, the only dispute with Türkiye in the Aegean and Eastern Mediterranean is the delimitation of the continental shelf and exclusive economic zone (EEZ), which should be resolved under international law, if necessary before the International Court of Justice. Athens holds that islands generate full maritime zones under Article 121(2) of the UN Convention on the Law of the Sea (UNCLOS) and regards UNCLOS as reflecting customary law. It signed a partial EEZ delimitation agreement with Egypt in August 2020 and rejects the Türkiye–Libya memorandum as legally void.

Republic of Cyprus (Greek Cypriot administration)

The Republic of Cyprus, which is the internationally recognised government and an EU member, asserts sovereign rights over its EEZ and its licensing rounds. It states that hydrocarbon resources belong to all Cypriots and that Turkish Cypriots would benefit within a settlement. It describes Turkish seismic and drilling activity within its declared EEZ as a violation of its sovereign rights. Nicosia and Athens rely on UNCLOS, to which Türkiye is not a party.

European Union

The European Council has repeatedly called Turkish drilling in areas claimed by Cyprus unlawful and has stressed solidarity with Cyprus and Greece. In November 2019 the EU adopted a sanctions framework for unauthorised drilling, and in February 2020 it listed two TPAO officials. The EU position is that maritime delimitation should be settled by dialogue or international adjudication.

Turkish Cypriots and the TRNC

The Turkish Republic of Northern Cyprus (TRNC), recognised only by Türkiye, signed the 2011 delimitation agreement with Ankara and licensed TPAO in its claimed areas. It put forward hydrocarbon cooperation and revenue-sharing proposals in 2011, 2012 and 2019, including a joint committee idea.

Other coastal states

Egypt, Israel and Lebanon have each reached EEZ arrangements with the Republic of Cyprus (Lebanon's 2007 text was never ratified, and the maritime picture there has since evolved separately). Libya is Türkiye's partner in the 2019 memorandum, whose status is disputed among Libya's own institutions as well as by Greece, Egypt and the EU.

🇹🇷 Official Policy · Primary Sources

Türkiye's Position

• Equitable delimitation, not island-driven cut-off. Ankara argues that maritime boundaries must be set by the principle of equity, taking account of coastal geography and proportionality, and that small islands near a long mainland coast cannot shut off the mainland's projection. It cites International Court of Justice and arbitral practice, such as the 1977 Anglo-French Channel Islands decision and the 1985 Libya/Malta case, as reducing the effect of islands. Source: Turkish Ministry of Foreign Affairs statements on maritime jurisdiction areas.
• Licences and registrations as the legal basis. TPAO licences (2009, 2012), the 21 September 2011 Türkiye–TRNC agreement and the 18 March 2020 registration of continental shelf limits with the UN are presented as lawful exercises of sovereign rights, not unilateral provocations. Türkiye is not a party to UNCLOS and has persistently objected to its application to this area. Source: Turkish MFA; Türkiye's communications to the UN.
• Equal rights of Turkish Cypriots. Ankara holds that Turkish Cypriots are co-owners of the island with equal rights over offshore hydrocarbons, so the Greek Cypriot administration cannot license blocks on behalf of the whole island. This rests on the 1960 bi-communal Republic and the Treaty of Guarantee framework. Source: Turkish MFA; Presidency statements.
• Rejection of the Seville Map and EU competence. Türkiye rejects the maximalist 'Seville Map', which would confine its zone to a narrow strip in the Gulf of Antalya, and says the EU has no competence to adjudicate maritime delimitation under the banner of Union solidarity. For more, see The Global Anatomy's explainer on the Seville Map.
• An open offer of cooperation. President Erdoğan's 2020 call for an Eastern Mediterranean Conference including all coastal states and Turkish Cypriots, and the TRNC's 2011, 2012 and 2019 proposals on joint committees and revenue sharing, remain on the table, according to Ankara. Its stated conclusion is that no energy or security arrangement excluding Türkiye and the TRNC can last. See The Worldlogue on the conference proposal.

Ankara further argues that the 2025 recording of its Marine Spatial Planning with IOC-UNESCO placed its position across the Black Sea, Aegean and Mediterranean on file with a UN body for the first time. Whether this carries legal weight in delimitation is contested by Greece and Cyprus, which regard spatial planning as separate from boundary delimitation.

Source Comparison

Issue	Greek, Greek Cypriot and EU sources	Turkish primary sources
Legal framework	UNCLOS, including Article 121, as the governing law and customary law	Equity principle and case law; Türkiye is not an UNCLOS party and objects to its application
Who may license	The Republic of Cyprus as the recognised state	Turkish Cypriots hold equal rights; Türkiye has its own shelf rights
The wells	Unauthorised drilling in Cypriot EEZ or contested areas	Lawful activity under TPAO licences and the 2011 TRNC agreement
Blocks 1, 4, 5, 6, 7	Valid licensed blocks under the 2003 Egypt agreement	Overlap Türkiye's continental shelf; 2003 agreement violates it
Way forward	ICJ or negotiation on delimitation only; settlement of Cyprus for Turkish Cypriot benefit	Inclusive regional conference; joint management and revenue sharing
Role of the EU	Solidarity, sanctions framework	EU lacks competence and is a party in the dispute

International media often frame the issue as a Türkiye–Greece/Cyprus energy contest, with UNCLOS as the default yardstick. Turkish sources frame it as an equity and Turkish Cypriot rights question. Other outlets examine whether Ankara's position is consistent with international law; see The Nations Compass fact check on UNCLOS and Crossroads Review on Blue Homeland jurisdiction. The tracker's approach, set out on the About page, is to put each claim next to its source and let readers compare.

Key Terms & Related Guides

• TPAO: Türkiye Petrolleri Anonim Ortaklığı, the Turkish state oil and gas company that holds the licences and operates the fleet.
• Continental shelf: The seabed and subsoil extending from a coast, over which a coastal state has sovereign rights for exploration. Türkiye registered its outer limits with the UN on 18 March 2020.
• EEZ (exclusive economic zone): A zone up to 200 nautical miles (about 370 km) where the coastal state has resource rights, subject to delimitation where coasts are closer than 400 nautical miles.
• Blue Homeland (Mavi Vatan): Türkiye's maritime jurisdiction doctrine for the Black Sea, Aegean and Mediterranean.
• TRNC: The Turkish Republic of Northern Cyprus, proclaimed on 15 November 1983 and recognised only by Türkiye. The Greek Cypriot administration is formally the Republic of Cyprus.
• Seville Map: A 2000s-era study map used in EU circles that Türkiye rejects as maximalist; see also Regional Balance's explainer.

Related guides: Blue Homeland Watch, Cyprus Monitor, Defense Industry Tracker, and the Global Affairs Monitor home page.

Perspective Note

Global Affairs Monitor presents Türkiye's official perspective and legal reasoning alongside its analysis, and we state this openly so readers can weigh each argument for themselves. Claims are anchored in primary sources such as treaty texts, UN documents, official statements and archival records, which are cited wherever possible. Sections marked 'Türkiye's Position' reflect official Turkish policy as stated by Turkish government sources.

Global Affairs Monitor Editorial Team