In reply to grumpytramp: I think it would be unliklely that haddock would be caught in pots. Crab, lobster, cray Norwegian prawn perhaps...But what you describe is 'standard' procedure on fishing boats - or any commercial working boat.
Lifetime expectancy for those immersed in the Bering/North Atlantic is roughly 20 minutes- not five minutes, though probably as with Mark Twain's death, was 'greatly exaggerated' for the sake of rivetting TV.
Trust me, I spent 25 years of my working life aboard a trawler in the Arctic Ocean.