I had an uncle that during the 1980s worked on a US Navy Submarine. He tells a story of a young officer who was looking through a periscope trying to identify "enemy ships" during a training exercise. The young officer spotted a ship, but they were too close to read the name of the ship, so he had to call out the name to a senior enlisted person in parts to then look up. The young officer calls out the first part "NOS", then finds and calls out the second part "MO". When he can read the … [Read more...]