4 ms·

-70C can be expected in Arctic.

• tantalor 5y ago
  Not in sea water: > Deep ocean water has a very uniform temperature, around 0-3 °C https://en.wikipedia.org/wiki/Deep_ocean_water https://en.wikipedia.org/wiki/Deep_ocean_water
  • dageshi 5y ago
    If it's on the surface for an extended period of time, presumably upper elements of the hull could reach that temp?
    • jhgb 5y ago
      Even exposed portions of the hull can be expected to not reach equilibrium with surface air. There will still be liquid water splashing around and also conduction from the warmer parts of the hull. Maybe the sail surface could get much colder but I doubt that it's subject to impact hazard under these conditions.
    • jandrese 5y ago
      Possible, but that is also the time when the hull is under the least amount of stress. So maybe they are worried about sitting on the surface of the Arctic in the dead of winter for an extended period of time and then crash diving?
  • comrh 5y ago
    Subs come to the surface though.