I venture to suggest that supplying somewhere in the Persian Gulf entirely by sea/air is probably slightly easier than coping with the vile climate of the South Atlantic.
Times change, but when oil field development was first mooted in the late 80s, there was a South African consortium which was proposing to run daily flights bringing in SA labour, fresh food etc (as well as surface movements for heavy goods) and taking the workers out to Sun City for their days off to take their money off them.
I would presume the sums still work.