WWII reference; related to how for the longest time I thought "Peter Dinklage" was something nautical like "Mark Twain"
I got a translation of "Das Boot" at a library book sale. I largely missed the anti-war part (and the part where they were in a war) in reading it as this HEROIC MEN AGAINST THE SEA epic. Arr.
Anyway, 'cause you can't print some things in Germany, parts were edited to read them yelling Heil UF (pretty much when leaving harbor), and naturally I assumed whatever UF was, heiling it was some sort of German way of letting people know that you'd cleared moorings.