In July, 1656 a fleet of the new Dutch navy, under Jacob van Wassenaer Obdam was dispatched to Danzig which helped persuade the Swedes to lift this blockade.
In July, 1656 Cornelis de Graeff sent a fleet under Jacob van Wassenaer Obdam of the new Dutch navy. The fleet was dispatched to Danzig which helped persuade the Swedes to lift this blockade.