SSBN. ETV. Will not respond to questions about sensitive or classified subjects. My views are my own and I do not represent anyone.
Hi there!
Edit: since this has been asked several times:
SSBN stands for “submersible ship, ballistic missile, nuclear powered”. That is, the same overall type of ship as the Red October.
ETV stands for “Electronics Technican, Navigation”, because N was already taken by Nuclear Electronics Technicians. I work with everything from interior communications and announcing circuits to Electronics, shipwide atmospheric monitoring, navigational inertial gyroscopes, strategic nuclear missile navigation, and tank level indicators to basic underwater submarine navigation using the voyage management system and even helming the ship itself.
People yell, yes, and most of the time we don’t mind loud noises UNLESS it involves hard objects hitting either the deck or the bulkheads (floor or walls). The reason is that most of the time everything is padded and sound insulated anyways, so something like the fans, pumps, motors and so on can spin up and do their thing without exposing our presence. Something like a hammer or wrench getting dropped into a bilge, on the other hand, transmits straight into the water, and that’s when there’s a manhunt to find out who did it, since Sonar hears that instantly and reports it to the Officer of the Deck.