Thank you, both of you, for your recommendation. Not 100% sure he’s ready for it (Das Boot) but it will paint probably the most realistic picture of what it was like in those steel coffins.

And, yes, subtitled would be the only way to watch it with him. He’s good on them thanks to some anime - most recently “Girls Und Panzer”.

And Down Periscope sounds like a hoot. Thanks for that one too.