Cold Waters is a highly immersive submarine warfare simulation. While it might not be fully realistic in some places, most of the "do" and "don't"s are based on mechanics you might not be familiar with and can confuse you while playing. Some mechanics even lead some people to think that the game somehow's "bugged" when in fact it's working perfectly fine and as it should. They just don't understand what's going on in the screen.

This guide links to a video that explains some of those mechanics, and hopefully after watching it you'll have a better understanding on how the game works, so you can use that knowledge to have more fun playing it on your own.

I might expand this guide later with more videos about more mechanics, tactics, evasion guides, etc. But hopefully just with this one it'll be enough to get you started.