Amazing men, Shackleton and his Captain, Frank Worsley. Worsley’s final recorded position for her was only off 7.5 km. Pretty darn good considering overcast conditions prevented accurate sightings. Once he and Shackleton had rescued everyone he returned to England and joined the Navy. Where he rammed and sunk a U-boat. Done with the Kaiser he and Shackleton joined the fight against Bolshevicks in northern Russia and was again decorated. Years later he was aiding Swedish volunteers to Finland during the winter war. Then back against Germany again. Serving with the Red Cross in France then lying about his (too old) age he joined the merchant marine. Until the lie was caught and he was finally retired. Lung cancer got him soon thereafter. Their stories show hope remains even when all seems impossible. Much needed reminders in these bleak days.
Worsley may have been even closer. I read recently that somebody’s discovered that the (lunar?) navigation tables Worsley was using had some inaccuracies, which would have put him out by single-figure km. I don’t know whether the position actually found corresponds with this. (Worsley’s greatest achievement, of course, was navigating the open boat across the Southern Ocean to South Georgia).