Art. 13. The situation of any such safety zone and the road, permanent way, river or canal whereby supplies will be brought to such safety zone shall be notified to other Powers in time of peace through diplomatic channels by means of a map and written description, and such notification shall indicate the precise site and limits of the zone. In time of war such notification shall be given through the agency of one of the States signatory to this Convention and not participating in the war. It shall be the duty of such State forthwith to inform directly the Governments of all States actively concerned in any such war of the contents of such notification, and as soon as may be to acquaint therewith the representatives of all States accredited to its Government and not actively participating in such war. A safety zone notified in time of war shall not be deemed to be such until the expiration of 48 hours after such State as aforesaid has informed the Governments of all States actively concerned in any such war as aforesaid.