Disregard all the haters that only want to see U-boat battles on screen, this show is much deeper than that. It has it's fair share of claustrophobic moments, and you really get the feel of what it would've been like to be a sailor on one of those.
The acting is really good, and the story is interesting enough to keep you binge watching.
It's also great everyone speaks their native tongue, German being the most prominently present of course.
I highly recommend this show to either fans of (war) drama or people with an interest in history. 9/10
