How long did the tourists spend in lifeboats floating on the Antarctic Ocean?

The Chilean Hercules transport plane touched down at Punto Arenas with 77 people onboard, about half of those rescued from the MS Explorer. The plane had been delayed by bad weather, but when it finally reached the mainland, its passengers seemed pretty relieved. They are very pleased to come home.(26)The tourists spent six hours floating around on the Antarctic Ocean in lifeboats with the temperature at -5 after their ship, the Explorer, was hulled by an iceberg and sunk.(27)They were picked up by a nearby liner, and all 154 passengers and crews survived.