Copy protectionThe PC version originally required a permanent internet connection even in single-player. In November 2011, Ubisoft removed this copy protection and the game only requires a one-time activation since then.
References to the gameSilent Hunter 5: Battle of the Atlantic was parodied in an episode of "Die Redaktion" (The Editorial Team), a monthly comedy video produced by the German gaming magazine GameStar. It was published on the DVD of issue 08/2010.
Contributed by Patrick Bregger (98875) on Nov 07, 2011. [revised by : Patrick Bregger (98875)]. -- edit trivia