Last year shipyards in two coastal towns the former people 's shipyard in stralsund and the peene shipyard in wolgast which have since merged to formed p + s werften were hit with nine cancellations of orders for new ships worth a total of 300 million .
The medieval towns of wismar and stralsund , on the baltic coast of northern germany , were major trading centres of the hanseatic league in the 14th and 15th centuries .