90 percent of Navy Ratings go to sea. The Short List of the ones that don't go to Sea: SEEBEE's (Construction) and CT's. Aviation Ratings do go to sea but they also spend a lot of time on shore.
The Main Ratings that are at sea: Boatswain Mate, Cooks, ET, Engine-man, Electrician, Machinist Mate,
and the ones that spend most time and get little time off: Nuclear Ratings.