An aircraft carrier, several Destroyers, and scores of E-Boats, minelayers, U-boats and other vessells were captured by the Allies after the war. The Russians captured many of these boats, as they were hiding in the Baltic(the rest were hiding in Norway), the Russians kept the ships they wanted, the vessels they didnt keep they passed on to their Allies or scrapped them. Many of these ships were returned to East Germany to form her Navy in the Fifties. The Western Allies, for the most part, destroyed captured German boats.
A side note is that the Chinese bought most of the former East German ships from re-unified Germany in '91, some of these were ships that served in WWII
