Viacheslav Tuliakov*
Oksana Stepanenko**
Jurisdictional Tensions: Divergent Judicial Approaches to Conflicts between UNCLOS and National Public Law Policies
Suggested citation:
Tuliakov, V., & Stepanenko, O. (2025). Jurisdictional Tensions: Divergent Judicial Approaches to Conflicts between UNCLOS and National Public Law Policies. Lex Portus, 11(2), 7–24. https://doi.org/10.62821/lp11201
Published online: 02.06.2025
*Doctor of Law, Professor, ESIC University (S/N, Cam. Valdenigriales, Pozuelo de Alarcón, Spain)
**Doctor of Law, Associate Professor, National University Odesa Law Academy (23, Fontanska Doroha St., Odesa, Ukraine)
ABSTRACT
This article examines the intricate jurisdictional tensions arising from the interplay between the United Nations Convention on the Law of the Sea (UNCLOS) and national public law policies. Focusing on the interpretative approaches of the European Court of Human Rights (ECHR), the European Court of Justice (ECJ), and the International Court of Justice (ICJ), the study identifies a fundamental conflict between coastal states’ exercise of public enforcement powers and the navigational freedoms and jurisdictional limitations established under UNCLOS. Through comprehensive analysis of pertinent case law, the research elucidates distinct jurisprudential methodologies reflecting varying institutional priorities and normative frameworks. The ECHR consistently applies a human rights-centric approach, effectively subordinating maritime jurisdictional claims to human rights standards, while the ICJ emphasizes state sovereignty and strict treaty interpretation in resolving jurisdictional disputes. These divergent approaches pose significant challenges for coastal states striving to align their criminal enforcement activities with potentially conflicting international legal obligations. The study further explores emerging harmonization efforts, including the integration of explicit human rights safeguards into maritime enforcement protocols, the development of specialized judicial review mechanisms, and the adoption of interpretive guidance addressing both UNCLOS compliance and human rights obligations. Additionally, the research analyzes how the United Nations Convention against Transnational Organized Crime framework introduces further complexity to maritime enforcement, particularly concerning migrant smuggling and human trafficking operations. The article concludes that reconciling these tensions necessitates sophisticated legal frameworks and institutional innovations capable of accommodating both the jurisdictional boundaries established by UNCLOS and the human rights obligations enforced by various international tribunals while addressing transnational crime suppression obligations.
Keywords: maritime law, UNCLOS, public law jurisdiction, human rights, European Court of Human Rights, International Court of Justice, jurisdictional tensions, migration, transnational crime, maritime enforcement.
REFERENCES
Al Chodor, Case C-528/15. Court of Justice of the European Union [2017]. https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A62015CA0528&qid=1744845791124
Cannestrini Lex. (2025, March 6). Diciotti Case, Italian Government violated International law in prohibiting disembarkment (Cass. 5992/25). https://canestrinilex.com/en/readings/diciotti-case-italian-government-violated-international-law-in-prohibiting-disembarkment-cass-599225
Case concerning maritime delimitation and territorial questions between Qatar and Bahrain (Qatar v. Bahrain). International Court of Justice [2001]. https://www.icj-cij.org/case/87
Case concerning the arrest warrant of 11 April 2000 (Democratic Republic of the Congo v. Belgium). International Court of Justice [2002]. https://www.refworld.org/jurisprudence/caselaw/icj/2002/en/91772
Case of Safi and others v. Greece (Application no. 5418/15). European Court of Human Rights [2022]. https://hudoc.echr.coe.int/eng?i=001-218512
Code of Ukraine of Administrative Offenses, 1984 (art. 1 – 212-24). https://zakon.rada.gov.ua/laws/show/80731-10?lang=en#Text
Commission v. Greece, Case C-72/22. Opinion of Advocate General Emiliou delivered on 2 June 2022. Detention of the applicant for having entered the territory of the European Union unlawfully. Court of Justice of the European Union [2023]. https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A62022CC0072&qid=1744845546953
Commission v. Hungary, Case C-123/22. Judgment of the Court (Fourth Chamber). Court of Justice of the European Union [2024]. https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A62022CJ0123&qid=1744845189948
Consolidated Immigration Act (Legislative Decree No. 286/1998). https://webarchive.archive.unhcr.org/20230520173403/https://www.refworld.org/docid/58c2aa5e4.html
Criminal Code of Ukraine, 2001. https://zakon.rada.gov.ua/laws/show/2341-14?lang=en#Text
Diciotti case. Judgment No. 5992/2025. Italian Cassation Court [2025]. R.G.N. 17687/2024.
European Convention on Human Rights, 1950. https://www.echr.coe.int/documents/d/echr/convention_ENG
European Ombudsman. (2023, June 7). Decision in strategic inquiry OI/3/2022/MHZ on how the European Commission ensures respect for fundamental rights in EU-funded migration management facilities in Greece. https://www.ombudsman.europa.eu/en/decision/en/170792
European Ombudsman. (2025). Decision on how the European Commission monitors fundamental rights compliance in the context of EU funds granted to Greece for border management (case 1418/2023/VS). https://www.ombudsman.europa.eu/en/decision/en/200015
Frigo, M. (2018, August 28). The Kafkaesque “Diciotti” Case in Italy: Does Keeping 177 People on a Boat Amount to an Arbitrary Deprivation of Liberty? Opinio Juris. https://opiniojuris.org/2018/08/28/the-kafkaesque-diciotti-case-in-italy-does-keeping-177-people-on-a-boat-amount-to-an-arbitrary-deprivation-of-liberty/
Greek Code of Criminal Procedure, 2019. https://www.lawspot.gr/nomikes-plirofories/nomothesia/nomos-4620-2019
Greek Penal Code, 2019. https://www.lawspot.gr/nomikes-plirofories/nomothesia/poinikos-kodikas-nomos-4619-2019
Guilfoyle, D. (2023). The outlaw ocean: Crime and survival in the last untamed frontier. European Journal of International Law, 34, 517–519. http://dx.doi.org/10.1093/ejil/chad019
Hamoudi v. Frontex. Order of the General Court in Case T-136/22. The action for damages against Frontex brought by a Syrian national, allegedly sent back out to sea from Greece in the direction of Turkey, is dismissed. Court of Justice of the European Union [2023]. https://curia.europa.eu/jcms/upload/docs/application/pdf/2023-12/cp230188en.pdf
Hirsi Jamaa and Others v. Italy (Application no. 27765/09). European Court of Human Rights [2012]. https://hudoc.echr.coe.int/fre?i=001-109231
Italian Criminal Code, 1930. https://www.brocardi.it/codice-penale/
Italian Government. (2025, May 22). Open letter. https://www.governo.it/sites/governo.it/files/Lettera_aperta_22052025.pdf
J.A. and others v. Italy (Application no. 21329/18). European Court of Human Rights [2023]. https://hudoc.echr.coe.int/eng/?i=001-223716
Judgement No. 3-r/2021. Constitutional Court of Ukraine [2021]. https://zakononline.com.ua/documents/show/503201___686131
Judgement No. 1121/2008. Spanish Supreme Court [2008]. https://sherloc.unodc.org/cld/case-law-doc/criminalgroupcrimetype/esp/2008/judgment_11212008_-_supreme_court.html
Judgment No. 2401/2022. Spanish Supreme Court [2022].
Kadi and Al Barakaat International Foundation v. Council of the European Union and Commission of the European Communities. Joined Cases C-402/05 P and C-415/05 P. European Court of Justice [2008]. https://curia.europa.eu/juris/document/document.jsf?text=&docid=67611&pageIndex=0&doclang=en&mode=lst&dir=&occ=first&part=1&cid=2905742
Khlaifia and Others v. Italy (Application no. 16483/12). European Court of Human Rights [2016]. https://hudoc.echr.coe.int/fre?i=001-170054
Law No. 130/2011 (regarding coast guard powers). https://www.normattiva.it/esporta/attoCompleto?atto.dataPubblicazioneGazzetta=2011-08-05&atto.codiceRedazionale=011G0179
Law Decree No. 113/2018 (Security Decree). https://www.normattiva.it/uri-res/N2Ls?urn:nir:stato:decreto.legge:2018-10-04;113~art13-com1-letc
Law on the Exclusive (Maritime) Economic Zone of Ukraine, 1995. https://zakon.rada.gov.ua/laws/show/162/95-вр?lang=en#Text
Law on the State Border Guard Service of Ukraine, 2003. https://zakon.rada.gov.ua/laws/show/661-15?lang=en#Text
Ley Orgánica 4/2000, de 11 de enero, sobre derechos y libertades de los extranjeros en España y su integración social. https://www.boe.es/buscar/act.php?id=BOE-A-2000-544
Ley Orgánica 2/2009, de 11 de diciembre, de reforma de la Ley Orgánica 4/2000, de 11 de enero, sobre derechos y libertades de los extranjeros en España y su integración social. https://www.boe.es/buscar/doc.php?id=BOE-A-2009-19949
McLoughlin, G. M. (2023, July 1). Stop the border: Exploring the criminalization of people accused of driving ‘small boats’ in the hostile environment. Law.ox.ac.uk. https://www.law.ox.ac.uk/sites/default/files/2024-06/M%20Grant%20McLoughlin%20-%20MA%20Thesis%20%28border%20crim%29.pdf
Medvedyev and Others v. France (Application no. 3394/03). European Court of Human Rights [2010]. https://hudoc.echr.coe.int/eng?i=001-97979
Mellersh, N. (2023). Italian court declares government decree on sea rescue unlawful. Infomigrants.net https://www.infomigrants.net/ar/post/46824/italian-court-declares-government-decree-on-sea-rescue-unlawful
M/V “Louisa” Case (Saint Vincent and the Grenadines v. Kingdom of Spain), Case No. 18. International Tribunal for the Law of the Sea [2013]. https://www.itlos.org/en/main/cases/list-of-cases/case-no-18/
N.D. and N.T. v. Spain (Applications nos. 8675/15 and 8697/15). European Court of Human Rights [2017]. https://hudoc.echr.coe.int/fre?i=001-201353
Papastavridis, E. (2013). The interception of vessels on the high seas, contemporary challenges to the legal order of the oceans. Oxford Hart.
Procedures Directive (Directive 2013/32/EU). https://eur-lex.europa.eu/eli/dir/2013/32/oj/eng
Prosecutor v. Al-Bidja, ICC-01/22-01/23, Arrest Warrant. International Criminal Court [2025].
Protocol against the smuggling of migrants by land, sea and air, supplementing the United Nations Convention against Transnational Organized Crime, 2000. https://treaties.un.org/pages/ViewDetails.aspx?src=TREATY&mtdsg_no=XVIII-12-b&chapter=18&clang=_en
Real Decreto 311/2022, de 3 de mayo, por el que se regula el Esquema Nacional de Seguridad. Boletín Oficial del Estado. https://www.boe.es/eli/es/rd/2022/05/03/311
Reception Conditions Directive (Directive 2013/33/EU). https://eur-lex.europa.eu/eli/dir/2013/33/oj/eng
Return Directive (Directive 2008/115/EC). https://eur-lex.europa.eu/eli/dir/2008/115/oj/eng
Schengen Borders Code, 2016. https://eur-lex.europa.eu/eli/reg/2016/399/oj/eng
Sea-eye. (2024, June 5). Breaking: Sea-Eye wins in Italian court against Italy. https://sea-eye.org/en/breaking-sea-eye-wins-in-italian-court-against-italy
Spanish Act on Maritime Navigation, 2014. https://www.mjusticia.gob.es/es/AreaTematica/DocumentacionPublicaciones/Documents/Act_14_2014__dated_24th_july__on_Maritime_Navigation_%28Ley_de_Navegacion_Maritima%29.PDF
Spanish Criminal Code, 1995. https://www.wipo.int/wipolex/en/legislation/details/18760
Spanish National Maritime Security Strategy, 2024. https://www.dsn.gob.es/sites/default/files/2025-01/Accesible%20ENSM2024%20EN_0.pdf
Stepanenko, O., Stepanenko, A., & Israielian, A. (2020). Reconciliation of the parties as a way to solve the criminal-legal conflict. Amazonia Investiga, 9(28), 288–295. https://doi.org/10.34069/AI/2020.28.04.32
Tuliakov, V. (2017). Maritime criminal law: Some conceptual provisions. In Maritime Law and Management: Evolution and Modern Challenges (pp. 61–64). NU “OMA”.
Tuliakov, V. (2025). Victimization and victim-oriented development of Ukrainian doctrine of criminal law through European Union dimensions. International Annals of Criminology. https://www.cambridge.org/core/journals/international-annals-of-criminology/article/victimization-and-victimoriented-development-of-ukrainian-doctrine-of-criminal-law-through-european-union-dimensions/7D258E10CF26934CBCE40BEE4F6D359
United Nations CAT. (2008). J.H.A. v. Spain, Cat/C/41/D/323/2007. Communication No. 323/2007 concerning the Convention against Torture and other Cruel, Inhuman or Degrading Treatment or Punishment. https://digitallibrary.un.org/record/642866?v=pdf
United Nations Convention against Transnational Organized Crime, 2000. https://treaties.un.org/pages/viewdetails.aspx?src=treaty&mtdsg_no=xviii-12&chapter=18&clang=_en
United Nations Convention on the Law of the Sea, 1982. https://www.un.org/depts/los/convention_agreements/texts/unclos/unclos_e.pdf
United Nations General Assembly. (2020). Report of the Special Rapporteur of the Human Rights Council on extrajudicial, summary or arbitrary executions. Mass graves, highlighting the multitude of sites of mass killings and unlawful deaths across history and the world (Doc. A/75/384). https://docs.un.org/en/A/75/384
