Cold Waters is awesome and hopefully I will be able to have the time to start playing the campaign mode now I have done some practice but I'm still pretty much a noob lol so I will most likely die a lot since I will be playing it on realistic. I have never had experience with submarines IRL or anywhere other then games or movies so I have no idea of the vernacular so I do apologies for that :P
This is a very early practice game I did using the mod that lets you play soviet subs as well. This sub I'm using is one that I copied and modified from the Red October that the mods author included. I changed it's speeds and switched the weapons from Russian to US weapons. It is basically a typhoon that swims like an Akula with Red Octobers silent drive so no matter the speed or depth you never cavitate. This was very early in my practicing I have graduated to playing the real boats now :P
Just as a warning this game maybe a little boring. I will try to improve that in the future if it needs it. :)