1. Baltic Sea, north part of the Baltic Sea Yale Public content 1990. 2011-12-19T20:33:34Z. 2015-10-21T15:08:05Z. Germany (East). Seehydrographischer Dienst. DMA Hydrographic/Topographic Center : [DMA, Combat Support Center, DOA, distributor. English. Public. Baltic Sea. and Baltic Sea.