Thanks Frank,
Makes sense I suppose.
I have worked in the arctic circle north of Norway in the Oil industry, the 100 days without light doesn't screw me up half as much as the 24 hr day light. my body see's dark as the signal to sleep. Strange but working night shifts never bothered me either way. I've also worked down at the other end (Antarctica) In the Falklands and South Georgia, I also had the pleasure of working on MV Earnest Shackleton the antarctic survey vessel - luckily not six months away from home. Its a strange boat, it has a class system on-board - Senior officers and managers, ships crew and then the grunts with separate mess rooms and lounges for each. Sad, so 18th century. It wasn't that bad when I was in the RN.