Did anyone mention "
We Dive at Dawn" : A classic from the UK?
Plus, it's available free streaming from the Internet Archives:
http://www.archive.org/details/We_Dive_at_Dawn_1943
In a related note: The archive has over 4,000 videogame videos, only one of which is "Aces of the Deep", and
none of the "Silent Hunter" series!
http://www.archive.org/details/gamevideos