Saw it yesterday.
I found it to be very fast paced, and showed you what those sub-killers were up against in the North Atlantic.
Heroes.....
Where did you see it? Theater, streaming, DVD/Blueray?
Back in the '50s I was attending surface craft sonar school at Key West, FL. One day we were on a DE, making test runs. At one point, we lay dead still on a calm, glassy sea. The loudspeaker said the watch for a torpedo from a sub on bearing such and such. Strained my eyes and saw nothing until a flash of yellow on my left (dummy, water-filled warheads were painted yellow.) . About 20' behind was the wake of the torpedo, fired about 30' deep to miss us.
It hit me then why the U-boats were so successful. Here we were in a dead calm sea, and no one saw the scope, or the fish until it was just feet away. Imagine trying to spot one in the gray, choppy sea of the North Atlantic.