Wolfpack: Crashdive! HD

So we start sinking ships after taking out 3 escorts when suddenly a 4th one comes out of nowhere and starts shooting at us missing all his shots fortunately. So this game just released into early access on steam called Wolfpack. And it is a 5 player coop game where you each man a station of a German type 7 U-boat. You can also join up with up to three other subs to form a vicious Wolfpack. Communicating through morsecode and the enigma machine.