A person who works in a submarine?

The proper term for a Submarine crewman is "Submariner", where the phonetic sounding is like "Sub-Marine-her" not "Sub-Marry-ner". It's always a good idea NOT to call a Submariner by the other improper term, lest you want something really bad to happen to you. 21 years later and I still correct people with an evil eye who mis-pronounce it.