No Navy experience here, Army for me, but I think there's a certian dynamic between men when encountering a shared stressful experience, that I always assumed was nearly universal. The gist of it is this:
As long as the leader is universally hated, all is well.
What I mean is that in my experience, as long as the crew/joes see a singular source of their discomfort, as the road gets tougher they put aside their individual differences and band together to fight their common enemy. Of course, it's not always the Captian that's enemy, sometimes it's the XO or the Platoon Sargeant. Also, the men need a leader they can love, i.e. First Sargeant/Cheif of Boat that they see as their protector from said enemy. It's kind of a good cop/bad cop thing, but I've never seen it fail.
Nothing about SH5, I'm sure, just my 2 cents on the subject.