I went to sea (merchant navy) when I qualified as a mechanical engineer at the age of 20.
Morale was seldom an issue because we were youngish men mostly, earning good pay and visiting some pretty much nice places around the world.
The best chance of getting caught up in a spot of bother was when you went ashore and visited 'establishments' that perhaps you shouldn't have
In SH5 terms I don't see the devs going into too much detail/depth regarding morale, other than 'low morale will amount to a longer timescale for various tasks'.