First off, congrats for making it through the pipeline. It's not an easy task, and I'm sure you had to say goodbye to some friends that didn't cut it along the way...
The six month delay in the pipeline was necessary... There were some deficiencies in the program and they needed to be corrected. I won't say anything more than that. Sucks to be the one sitting around waiting to proceed in school, and trust me; the fleet is feeling the pause in training much more than anyone stuck on shore duty!
Sounds to me like you're stuck in a shipyard period that's not going well (Enterprise?), and you're feeling the pain associated with it. It happens, and all I can say is deal with it. It's part of the job, and if you pay attention you can learn a lot!
Low morale does impact production, it's a fact of life. If production goes down, hours go up. I'm not saying it's the right answer, but neither is letting everyone go home at 8 or 9 in the morning.
No concern for people's well being? Please elaborate!! It's not often the a Nuke will be in danger of physical harm, I'd be interested to hear what that danger is...
If you don't want to do it for 20 years, don't. Finish the contract you signed and go home. It will be challenging to finish your degree while on a ship, especially on you first tour. That time is intended to teach you how everything works, and there's really not much time for anything else. PPWS is possible on your first tour, but it won't be given to you. You have to be better than the rest, and then MAYBE...
If you want a degree and PPWS, do your time on the boat and go to prototype. You'll be able to do both.
Other than that, keep your head up and qualify every single thing that they allow you to! It's easy to get bitter when in a bad situation, it's harder to see what needs to be done and do it. Look at the bigger picture and do everything you can to make yourself better... It does pay off, just not tomorrow.