Bruno de Seixas Carvalho

Where is the maritime in Global Britain? Naval power, maritime security, and the UK’s identity after Brexit.

Supervisors: Dr Marco Vieira and Dr Julie Gilson

Bruno de Seixas CarvalhoBruno’s project investigates a pivotal element intertwining the UK’s national identity post-Brexit with its foreign policy: the maritime domain. It does so by exploring the maritime aspects of “Global Britain”, the slogan that has shaped the UK’s reconfiguration in world politics since 2016. Britain’s naval power has increasingly underpinned its sea-based foreign policy under the agenda of maritime security. Maritime security entails policies, regulations, and military actions to secure the ocean from political, environmental, and humanitarian threats. Britain’s shift to the Indo-Pacific; the AUKUS agreement, and the substantial investment in the Royal Navy (RN), epitomised by the deployment of the Carrier Strike Group 21 led by HMS Queen Elizabeth express this stance. These foreign policy objectives, however, do not stem from a coherent maritime self-image narrative. In fact, although the term is widely used by Prime Ministers and Whitehall officials, Global Britain remains unclear, lacking a link between sea-oriented policies and a maritime-based national identity. Foreign policies rely on a stable sense of identity and vice-versa, in a country where the sea and the Navy have historically shaped its culture, it is surprising that the ocean is currently overlooked in its identity at such a crucial time. By offering a maritime interpretation of Global Britain, Bruno’s research proposes a political framework for the UK under the agenda of maritime security and Britain’s naval power. Building on the literature on ontological security, he argues that Global Britain is symbolically structured through a maritime discourse, accommodating the UK’s ontological insecurity post-Brexit, and the anxiety regarding its existential self-image. This is because the sea represents liberal values, power, global environmental awareness, and cooperation. These elements are empirically manifested in maritime security practices through the RN, referring to Britain’s past identity as a great power.


  • MA Maritime Studies – Brazilian Naval War College (2018-2019)
  • BA Naval Sciences – Brazilian Naval Academy (2008-2011)

Research interests

  • Maritime Security
  • Ontological Security
  • Maritime Strategy
  • British politics
  • British Foreign Policy
  • Royal Navy under the Global Britain policy
  • Naval History 


Bruno spent 13 years in the Brazilian Navy, as a Surface Officer. After serving on the Brazilian Frigate “Defensora”, submarine “Tikuna”, and Corvette “Julio de Noronha”, he worked as a staff officer in the Department of Naval Operations at the Second Squadron Command. Between 2018-2019 he did a MA in Maritime Studies at the Brazilian Naval War College where he theoretically examined the changes in maritime strategic thought between the 20th and 21st century, with a focus on the United States and United Kingdom. After his masters, Bruno served at the Brazilian Naval War College, as the head of the Laboratory of Simulations and Prospective Scenarios in the Research and Graduate Superintendency. He is currently the executive editor of the Boletim Geocorrente, a fortnightly journal produced by the Conjuncture Assessment Group at the Brazilian Naval War College.

Professional memberships

  • Executive Editor of the Boletim Geocorrente (Brazil). Boletim Geocorrente is a fortnightly publication analysing international politics using a geopolitical framework. Bruno is responsible for selecting, editing, and providing feedback on the articles to be included in each edition.
  • Member of the Sea Economy group in the subgroup for maritime social relations (Brazil). . The Sea Economy group provides insights into the relevance of the maritime domain for society.  Bruno’s subgroup analyses the social dimension of the sea economy. He is responsible for writing policy briefs.
  • Member of the centre for strategic studies and marine planning in the subgroup of geopolitics and maritime governance (CEDEPEM) (Brazil). CEPEDEM is a multidisciplinary group, which seeks to understand marine planning and its diverse applications and conceptions worldwide. The subgroup of geopolitics and maritime governance focuses on armed movements and their political disputes involving the ocean and their impact for marine planning. I contribute to the writing of articles and policy briefs. 

Conference papers

De Seixas Carvalho, Bruno, Rita Feodrippe, and William Moreira. 2019. "International Relations and Maritime Studies." The British International Studies Association 44th Annual Confer, London, 12–14 June 2019.

De Seixas Carvalho, Bruno. 2020. "As transformações do pensamento estratégico marítimo nos séculos XX e XXI: Construindo a securitização do mar " 5o Seminário dos Programas de Pós-Graduação das Força Armadas. Rio de Janeiro, 7-8 October.

De Seixas Carvalho, Bruno. 2021. "Civil-Military relations in the Brazilian Navy: ontological security and self-identity." Military in Politics in Brazil London, 27-28 May 2021.


De Seixas Carvalho, Bruno, and Marcelo J. Loureiro. 2019. "Ships, technology and the birth of maritime thought the epistemological influences on Mahan’s first influence."  Navigator: Subsídios para a História Marítima Brasileira 15. No. 30:96-110.

De Seixas Carvalho, Bruno, Jéssica Barbosa, Ana Farias, and Victor Gaspar. 2021. "The Political and Strategic impacts of the U.S. Advantage at Sea 2020 for the Brazilian Maritime Domain."  Boletim Geocorrente 01 (01):01-09. doi:10.21544/2446-7014.esp.n01.p01-09

De Seixas Carvalho, Bruno, Luiza Guitarrari, Guilherme Carvalho, and Marina Autran. 2021. "Global Britain, o Indo-Pacífico e o Brasil: Breves Considerações sobre o Integrated Review 2021."  Boletim Geocorrente 1 (02):10-25. doi: 10.21544/2446-7014.esp.n02.p10-25

De Seixas Carvalho, Bruno, and Marcelo Valença. 2021. "A pele do Leviatã e a Geopolítica do Vírus: a noosfera como território político dos afetos."  Revista Sul Global (2(1)):111-139

De Seixas Carvalho, Bruno, and Leonardo Mattos. 2022. "Beyond a Geopolitical view of the oceans: oceanpolitics and the singularity of the maritime domain." In The Influence of Sea Power Upon Maritime Studies, edited by Francisco Almeida and William  Moreira. Forthcoming SDM.

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