After BDOC, you go through some additional schools (bridge/shiphandling training/job specific) before showing up to your ship. Yes, SWOs get BAH, but it is not really job specific to get it. Officers just have to request it when they check in with their ship admin. When you are out at sea for some time you still get BAH as long as you are living out in town in your homeport. Depending on your rental lease's end date, and if you like the place, you can keep your rental while you're gone. Then just have autopay for the rent and the required utilities until you get back. If your lease is about to end before you leave, and you hate the place, then just throw your stuff in storage/sell it/ throw it out. Then you just gotta figure out where you wanna live again when you get back. Some do throw their stuff in storage since it might make sense for them, and their timing, to pay storage fees vice an apartment ($150ish vs $2,300ish). Most just renew their leases and then just break the lease once they get new PCS orders. Really its just about your lease timing, how much time you have left in your homeport/ship, and how much money you wanna save at the end of the day. But if you do a 5th Fleet deployment, then money ain't a thing