An icy mystery deep in Arctic Canada

This is a great documentary on Antarctic tale of survival. The adventures to find safety was harrowing as they walked several hundred miles in the snow and ice. The ship had gotten stuck in ice and sunk. The majority of the crew was left behind on a beach. The CPT and a few men traveled on a lifeboat to find help. Many times the CPT could not use his sexton due to cloudy days. He did calculations in his head and was able to navigate hundreds of miles to a small island perhaps 10 miles long. There was something going in the CPT's head that could not be explained. Of something like 28 crewmembers, all survived an ordeal lasted more than a year.

https://www.youtube.com/watch?v=5OBsHnS5S4U