First, for Don, the carrier sailor. I got in a discussion over a post on another site over how many O-6's (Captain in the Navy, full Colonel in the other services) there might be on a carrier. This was in response to something about an O-6 who had to hide something (not for discussion in this board!) from the other O-6's on the ship. The specific ship was the USS Abraham Lincoln.
I questioned how many O-6's there could be, even on a carrier, besides the ship's captain. Someone else chimed in and claimed there'd be lots but was using NATO rank designations, suggesting they may have been from Europe. It turns out the Lincoln's exec is also a Captain by rank. How many others might there be? CO of the Marine detachment? CO of the air wing? CO's of multiple air units?
For the submariners: I've had this explained to me before but I've gotten myself confused. Is it submarine-er or sub-mariner? I'm thinking the former is what's used in the USN but I saw some RN people on TV lately using the latter.