And note that if you are spotted planes will be called in. You will be rightly swarmed. As you would have been in Japanese dominated waters in a real sub.
Oh, there are thousands who enjoy the game. Doubtless there are thousands who do not. But they are not spending time at Subsim. They are playing Unreal Tournament III or Ratchet and Clank. By the way, enemy AI in Unreal Tournament III is lousy.
