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. 20.
Art. 20. The merchantman supplied with fuel or other stores in a neutral state which repeatedly delivers the whole or part of its supplies to a belligerent vessel, shall not again receive stores and fuel in the same state.