ICRC databases on international humanitarian law
Treaties, States Parties and Commentaries
Treaties and Documents
Geneva Conventions of 1949 and Additional Protocols, and their Commentaries
Historical Treaties and Documents
Convention on Maritime Neutrality. Havana, 20 February 1928.
Section III : Rights and duties of neutrals - Art. 26.
Art. 26. Neutral states are bound to exert all the vigilance within their power in order to prevent in their ports or territorial waters any violation of the foregoing provisions.