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Calendar of Events

2 July 2026 fixed as the date for the opening of the oral proceeding in the cases submitted to the Seabed Disputes Chamber by Nauru Ocean Resources Inc. and Tonga Offshore Mining Ltd.

By Orders 2026/3 and 2026/4 of 10 June 2026, the President of the Seabed Disputes Chamber, Judge David Joseph Attard, fixed 2 July 2026 as the date for the opening of the oral proceeding.

Case No. 34: Case concerning an inquiry by the International Seabed Authority (Nauru Ocean Resources Inc. v. International Seabed Authority)

Case No. 35: Case concerning an inquiry by the International Seabed Authority (Tonga Offshore Mining Ltd. v. International Seabed Authority)

The M/T “Heroic Idun” (No. 2) Case (Marshall Islands/Equatorial Guinea) - Special Chamber Delivers its Judgment

At a public sitting held today, the Special Chamber of the International Tribunal for the Law of the Sea formed to deal with The M/T “Heroic Idun” (No. 2) Case (Marshall Islands/Equatorial Guinea) delivered its Judgment. The Judgment was read by Judge Hoffmann, President of the Special Chamber.

The M/T “Heroic Idun” (No. 2) Case

Special chamber to deliver its Judgment on Wednesday, 27 May 2026, at 11 a.m.

Visit of the Minister for Foreign Affairs of Iceland to the Tribunal

Judge Tomas Heidar, President of the International Tribunal for the Law of the Sea, received the Minister for Foreign Affairs of the Republic of Iceland, Ms Þorgerður Katrín Gunnarsdóttir, at the Tribunal today. Minister Gunnarsdóttir met with Judge Heidar in the President’s chambers, where she also signed the visitors book.

Secretary-General of the International Seabed Authority visits the Tribunal

Judge Tomas Heidar, President of the Tribunal, welcomed Ms Leticia Reis de Carvalho, Secretary-General of the International Seabed Authority, along with Ms Mariana Durney, Legal Counsel, to the Tribunal today.

The “Zheng He” Case (Luxembourg v. Mexico) - Case Removed from Tribunal’s List

On 16 March 2026, by Order of the President of the Tribunal, Judge Tomas Heidar, The “Zheng He” Case (Luxembourg v. Mexico) was removed from the Tribunal’s List of cases.

ITLOS-Nippon Foundation Capacity-Building and Training Programme on Dispute Settlement under UNCLOS

We welcome applications for the 2026-2027 ITLOS-Nippon Foundation Capacity-Building and Training Programme on Dispute Settlement under UNCLOS until 6 March 2026.

New arbitrator appointed in the arbitral proceedings instituted by Ukraine against the Russian Federation

On 6 February 2026, the President of the International Tribunal for the Law of the Sea, Judge Tomas Heidar, appointed Mr Nguyen Hong Thao (Viet Nam) as arbitrator in the arbitral proceedings instituted by Ukraine against the Russian Federation under Annex VII to the United Nations Convention on the Law of the Sea (PCA Case No. 2019-28, Dispute Concerning the Detention of Ukrainian Naval Vessels and Servicemen (Ukraine v. the Russian Federation)).

Order in The “Zheng He” Case (Luxembourg v. Mexico)

The President, taking into account the agreement of the Parties, extends the time limit for the filing of the Counter-Memorial of Mexico to 16 March 2026.