Kinda a broad questions and so many answerings, and every one of them are different then the next. You should try narrowing it down a little, there is so many things in the day to day life of a nuke depending on rate and what phase of the pipeline you are in. For instance, in A school/Power school expect at least 60 hours a week of school time and study time after school hours. That estimate may be to much or not enough depending on how well you do and school and how fast you pick up the knowledge being taught. I assure you, it's like nothing you have done before as far as schooling, it will be faster and more intense than any other schooling you have done. Then prototype is 12 hr days on rotating shift work going from days to swings to mids then to training week, and there is a certain pattern they follow but it's been a while and I don't remember how it goes. Then out to sea, that is where everything goes up in the air and is usually unique to a certain ship and individual. The ships scheduling for at least surface and constantly changing depending on the needs of the navy and what is going on in the world. It will also greatly matter who and what your chain of command is like, and the will have the greatest affect on your time in the Navy. Honestly, if my chain of command would have stayed the same as it was when I first got to the ship, I would have probably re-enlisted. Yet, about 5 months after i got there, the was a change and our new CO wasn't as cool as my last one so that was the deciding factor for me not re-enlisting. Other than that, it will be studying, training, drills, qualifying, maintenance, followed by more training and studying. A lot will depend on what type of worker you are to, usually the guys that work harder get more work cause the isn't any recourse for being a lazy sack of crap and there are a lot of those. The main thing is, your time in the navy will be different then anyone else's and it is all what you make of it. A lot of the time sucked for me, but I got a great education out of it and would do it over again if I had it all back to do again just because of the education.