Original: The Explorer was abandoned in the early hours of November 23, 2007 after taking on water near the South Shetland Islands in the Southern Ocean, an area which is usually stormy but calm at the time.
Simplified: Everyone escaped from Explorer in the early hours of November 23 2007 after taking on water near the South Shetland Islands in the Southern Ocean, which is usually stormy, but was calm at the time.