Wismar is a small town in northern Germany on the Baltic Sea , in the state of Mecklenburg-Vorpommern , about 45 km due east of LÃ 1\/4 beck , and 30 km due north of Schwerin . Wismar is a small port and Hanseatic League town in northern Germany on the Baltic Sea , in the state of Mecklenburg-Vorpommern , about 45 km due east of LÃ 1\/4 beck , and 30 km due north of Schwerin .