In addition to the merchant convoys, U-boats sank some kind of Dutch flotilla, but the Ships Sunk list has at various times listed it as a flotilla of transports and a flotilla of destroyers. It also has no name. This is mysterious and quite possibly a bug. The historical thing to do, given dubious overclaims by skippers and deliberate inflation of U-boat results by propagandists, is to declare that German vessels have sunk a Dutch aircraft carrier with the loss of its full complement of elves and dinosaurs.
