1857年3月14日奥地利、比利时、法国、英国、汉诺威、汉萨城市、梅克伦堡-什未林，荷兰、奥尔登堡、普鲁士、俄罗斯、瑞典-挪威、丹麦废除海峡税条约

Treaty for the Redemption of the Sound Dues between Austria, Belgium, France, Great Britain, Hanover, the Hansa Towns, Mecklenburg-Schwerin, the Netherlands, Oldenburg, Prussia, Russia, Sweden-Norway and Denmark of 14 March 1857