Good one, Amarië! And Grondy. :)
As I study astrophysics I am a bit ashamed to say I needed to Google that one to figure it out... Aehmm... Good book, by the way. Ken Follet? Don't remember... :/
Grondy: I thought we were only supposed to use english movies? ;)
Submarines might be cowardly boats, but I wouldn't want to be in one in action!
Your movie is, I presume, "Das Boot" (eng. "The boat"), a very see-worthy (if not sea-worthy ;) ) movie aboat a german submarine and it's crew struggeling to survive at the end of the war.
If I'm right: :)
3 words: information about cargo transport.
What are you looking down here for?