I learned that "dümpeln" or "dahindümpeln" comes from low German "dümpelen" where in the sailors language it means that a boat is bobbing around not moving forward. Today it may also be used when work ...
In the movie Das Boot, the crew address the captain with a word I don't understand. I think it may be "Kaleun", which I assume is short for "Kapitan Leutnant". Am I right? Is that a real word?