Per angusta ad augusta…?
I gave up Latin at school over 45 years ago so I’m a little rusty… google translate struggled with this too but came up with ‘through difficulties to August’… I assume they went with a motto that looked about right rather than one that made any sense?
Not watched it yet, we’re still on series 1. Yes, it’s hokum and you have to ignore the inaccuracies (I’ve never spent much time on a sub except for the odd visit and I can spot a load of them) but as drama it’s entertaining enough.
You do though have to question the sense in selecting a DCI who’s recently undergone enormous trauma, losing her fiancée in a tragic accident in a sinking car from which she barely escaped with her stepdaughter (spoiler alert) and is on antidepressants for extreme anxiety & claustrophobia, for a job on a submarine…!