The Three Seas Initiative Research Center

The Three Seas Initiative (3SI), also known as the Three Seas is the term describing a project of political and economic cooperation between thirteen European states.

The 3SI was launched in 2016 and links the following European Union member states: Austria, Bulgaria, Croatia, Czech Republic, Estonia, Greece, Hungary, Lithuania, Latvia, Poland, Romania, Slovakia and Slovenia

The objectives of the Three Seas Initiative focus on the economic development of the region by cooperation in the transport, energy and digitalisation sectors.

Study trips

Book Publications

Inicjatywa Trójmorza: geneza, cele i funkcjonowanie

Agnieszka Orzelska-Stączek, Paweł Kowal

This publication is an attempt to compile basic information on the Three Seas Initiative, which is a project of political and economic cooperation, primarily in the areas of infrastructure, transport and energy.

The Three Seas Initiative was initiated in 2016 by Poland and Croatia, and then covered twelve countries in the region.

In the first chapter of the publication, Paweł Kowal describes the genesis of the Three Seas Initiative and then Agnieszka Orzelska-Stączek discusses the process of its establishment and functioning up to the summit in Bucharest, and also outlines the objectives of the project.

Inicjatywa Trójmorza z perspektywy jej uczestników

Agnieszka Orzelska-Stączek, Paweł Kowal

This monograph shows the results of research on the Three Seas Initiative conducted at the Department of Central and Eastern Europe and Post-Soviet Studies of the Polish Academy of Sciences.

The project, which has resulted in this publication, was implemented in two stages: the first involved interviews with the ambassadors of the Three Seas Initiative’s states and the Chief of Cabinet to the President of Poland, and the second included the development of the monograph.

Official websites regarding the project


Co-financed from the Polish state budget under the Minister of Education and Science program “Science for Society”, project no. NdS/543014/2022/2022, amount of co-financing: PLN 1,500,000.00, total project value: PLN 1,500,000.00.