FAQ

You can find the soundtrack on Amazon if you search for "Das Boot music 2018"

Despite their title U-boats actually spent as little time as possible underwater and overwhelmingly spent most of their existence on the surface where they were faster and more fuel efficient. Therefore the pursuing U-boat would simply risk staying on the surface during daylight and might not carry a full torpedo load, making it much faster. It also ran its' engines at full power which the other U-boat would not for risk of wearing them out.

Partly because he is anti-communist and anti-Semitic but also he is an Irish Republican who worked with the Nazis to destroy the Allied war effort. He sends his information back and forth to Germany via their embassy in Dublin, the Irish Free State remaining neutral during World War 2 and the German diplomatic mission there acting as a centre for espionage and electronic surveillance.

This is an international co-production with an international cast. In some international productions they re-shoot the same scene over and over in different languages if the cast is bi-lingual. Not sure if that is being done here. It is disconcerting when Lizzy Caplan occasionally speaks French but mostly speaks English, even though the French resistance men speak back to her mainly in French. More explainable, perhaps, is the German officer and the French policeman speaking English to each other. I imagine that that is the only language they have in common.