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
Manual of the Laws of Naval War. Oxford, 9 August 1913.
Section II : On the armed force of belligerent states - Art. 9.
Art. 9. The conversion of a vessel into a war-ship may be accomplished by a belligerent only in its own waters, in those of an allied State also a belligerent, in those of the adversary, or, lastly, in those of a territory occupied by the troops of one of these States.