Tonight Ubisoft patched their Uplay Game Launcher with a brand new feature - offline mode. What this means to Silent Hunter 5 players is that we can finally play our single player game without being connected to the internet at all! Don't need to connect at first nor do we need to stay connected. YAY!
Start your game normally, you'll be greeted with the usual game launcher:
Clicking on SETTINGS gets you this screen:
Once you're turned OFF Save Games and turned ON Offline mode, click Apply.
Now your launcher looks like this. Just click PLAY - even if you're off the internet - and enjoy Silent Hunter 5!
As the warning says, Uplay features and online saved games will not be available while in this mode, but for Silent Hunter 5 that's not a big loss.