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Convention (VI) relating to the Status of Enemy Merchant Ships at the Outbreak of Hostilities. The Hague, 18 October 1907.
Art. 3. Enemy merchant ships which left their last port of departure before the commencement of the war, and are encountered on the high seas while still ignorant of the outbreak of hostilities cannot be confiscated. They are only liable to detention on the understanding that they shall be restored after the war without compensation, or to be requisitioned, or even destroyed, on payment of compensation, but in such cases provision must be made for the safety of the persons on board as well as the security of the ship's papers.
After touching at a port in their own country or at a neutral port, these ships are subject to the laws and customs of maritime war.