Sorry Sonia, the only source I can think of would be the records of the V.O.C. (The Dutch East India Company). There probably exist records of merchant vessels from Holland, which were probably taxed for their mooring and dockage. There are records in early newspapers of ships leaving and entering the Marsdiep at the Texel Gates. British Admiralty records are also a source. Do you any ship names and/or passenger names? Are you looking for immigrant lists?