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Argentina Begins Malvinas Sea Lion Oil Case at Maritime Tribunal

Argentina starts maritime tribunal hearings against UK over Sea Lion oil project with Argentine judge.

Nov 9, 2026

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Argentina Begins Malvinas Sea Lion Oil Case at Maritime Tribunal

Argentina starts maritime tribunal hearings against UK over Sea Lion oil project with Argentine judge.

In brief

Argentina starts maritime tribunal hearings against UK over Sea Lion oil project with Argentine judge. Argentina filed the first-ever maritime case against the UK over oil drilling in the Malvinas archipelago, seeking temporary measures to halt the Sea Lion project before 2027. Originally reported by Perfil.

Argentina files maritime case

Argentina presented its request for temporary measures to halt the UK's Sea Lion oil project in the Malvinas archipelago at the International Tribunal of Maritime Law in Hamburg.

Tribunal completes with Argentine judge

The tribunal was completed with the swearing-in of Argentine judge Raúl Vinuesa, who replaced the excused Argentine judge Frida Armas Pfirter.

Live hearings begin

Live hearings begin

Live hearings start at 6 a.m. (Argentina time) with camerunese Maurice Kamga overseeing the sessions.

Royal family member in islands

Queen Carlos III's sister, Ana, is visiting the Malvinas islands and South Georgia from November 1 to November 20.

Argentina's legal team

Argentina's delegation includes legal secretary María Ibarzabal Murphy, ambassador Mario Oyarzábal, and lawyers Marcelo Kohen and Agustín Giustiniani.

First hearing schedule

First hearing schedule

Argentina presents its case from 6 to 9 a.m. on Tuesday, with the UK responding from 11 to 2 p.m., followed by a second round on Wednesday.

Historical context

This is the first time Argentina has filed a maritime claim against the UK over Malvinas, referencing a 1884 arbitration proposal the UK rejected.

Argentina's legal arguments

Argentina argues the Sea Lion project violates environmental protections and maritime law, as it is the first offshore oil field operated by Navitas with a partner that has never drilled.

Timeline for decision

Malvinas: comienzan las audiencias por Sea Lion en el Tribunal del Mar con un juez argentino

The tribunal could rule by late November, before the Sea Lion project's drilling begins in early 2027.

The one thing

Argentina filed the first-ever maritime case against the UK over oil drilling in the Malvinas archipelago, seeking temporary measures to halt the Sea Lion project before 2027.

Read the original on Perfil

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