Must admit I'm not a great sailor unless it's flat calm and certainly couldn't hack being in a submarine. My older brother has spent all his 45 years of working life at sea...20 years as a Captain for Chevron. He'll be 66 this year and still works as a master mariner consultant. I guess he can't settle being at home for long periods. I haven't the foggiest why he chose that career as there's no seafaring history in the family.
Did you never fancy following in your fathers footseteps Splinter?
I did at one point, but was let down by my appalling mathematics UK Man . You needed O levels to include maths to enter as a midshipman, but I failed the exam about six times, in spite of private tuition.
Anyway, here's some incredible German engineering precision.