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If you are in DEP you should be able to access Navy Knowledge Online, an excellent source of information. Talk to your recruiter about gaining access to that web site.
To answer your other question (If I may)- After Boot Camp you will go to:
Naval Aircrew Candidate School
Aviation Rescue Swimmer School (If you are going helos)
AW "A" School
SERE School
Then off to your aircraft specific schools....
It's about two years total before you hit the fleet.
You don't have to be a great swimmer before you get to ARSS (SAR), just make sure you are very comfortable in the water, and in good shape. If you have any fear of the water, being under water, getting blasted by rotor-wash, or being pulled underwater by someone who does not want to be rescued, the instructors will find out in a big hurry and you will be gone.
For prep.- Swim, run, do flutter kicks, push ups (wide arm, regular, and bicep), sit ups, side crunches, chin ups.... Towards the end of ARSS you will be doing 110 4 count flutter kicks, waay over 100 push ups and sit ups a day.
When you leave ARSS, you will be a great swimmer!
It is only a 5 week school, just get 'er done the first time.