Forgot to mention the beautiful trade off for getting up so early. Standing outside, ice stretching from horizon to horizon, the ship softly crunching a path through it, soft grey sky, and below me on the heli deck an anonymous figure in AAD-issue hooded jacket and black and yellow rigger gloves doing Tai Chi at 3am.
It was worth missing sunrise for that.
Indeed… anonymous figures in hooded jackets under the shroud of morning… very mysterious!