Boatswain's Mate is an actual RATE what other branches call an MOS (Military Occupational Specialty). Undesignated seamen are the non rated losers E-3 and below that work for the Boatswain's Mates.
I do feel the need that Boatswain's Mates do start off as Deck apes who train on the job, since their is no "A" School for their rate. Why would those imbeciles need a school? You don't need a class for paint chipping. So a Boatswain's Mate is a former deck ape on a power trip.
Navy Aviation Botswain's Mates in Air Department- V1, V2, V3, V4 and VX Divisions on Board Naval Flat Top Vessels only (Mainly work at Airstations and onboard Aircraft Carriers, etc.)
"The Deck Apes scurried on the flight deck during Flight Operations."
Also very good at basketball, football and on ocassions Soccer
Known to have huge cocks
2nd person- Damn Deckapes