Along time ago...
....a Canadian flight surgeon accompanied an Argus crew on one of their circumambulations of all the maritime bases around the North Atlantic. His considered opinion at the end of three weeks was; "40oz of Bacardi is no substitute for 8 hours sleep". The patrols flown between each base were generally 12 to 14 hours duration.
Tell the young uns today an'they wun't believe you......
The Ancient Mariner