Too obscure? The great part of living in Korea is being able to buy all of these films at dirt cheap prices. This one has a plot similar to 'Lifeboat', a test of character under hardship. It has two actors from 'The High Chaparral' along with Rock Hudson here. One has a very easy to remember, if unexpected name.
See? Give me enough clues and I'll figure it out eventually (OK, it was GoogleFu). Gimme a sec to find a new one. eta: