What a disappointment
Before seeing this film, I read Hank's complaint about this not being shown/seen in big screen theaters, for which it was designed. I figured this would be a massive war film, like saving private ryan, but instead... what we got was lots of technical jargon, a small firefight, another crapload of technical jargon, another minor skirmish - basically, that's the whole film. No character development, no plot beyond technical jargon+battle - nada.
The whole movie is 1 hour and 20 minutes, with 9 minute credits at the end - and even that 1 hour 20 minutes felt like they were stretched out, with a crapload of technical jargon spewed out with no coherency or particular meaning to the audience. I mean, cut down on the technical lingo exchange scenes, and show more action. I suspect if they cut down the technical lingo exchange scenes in half, this movie would be around 40 minutes long (though if they slow down the credits, they could stretch those to 30 minutes instead of the existing 9).
I felt more intrigued and excited reading the wiki entry about this battle and the fate of the numerous ships involved, than watching the movie - and that's not a good sign, is it? Read the wiki entry for a more entertaining story.
https://en.wikipedia.org/wiki/Battle_of_the_Atlantic