The Southern Ocean and Cape Horn

We traveled in some of the least traveled and most dangerous waters on the planet - the great Southern Ocean and the Drake Passage. - The Southern Ocean, also known as the Great Southern Ocean, the Antarctic Ocean and the South Polar Ocean, comprises the southernmost waters of the World Ocean, generally taken to be south of 60°S latitude and encircling Antarctica. It is usually regarded as the fourth-largest of the five principal oceanic divisions. This ocean zone is where cold, northward flowing waters from the Antarctic mix with warmer sub-Antarctic waters.

The Drake Passage or Mar de Hoces -Sea of "de Hoces"- is the body of water between the southern tip of South America at Cape Horn, Chile and the South Shetland Islands of Antarctica. It connects the southwestern part of the Atlantic Ocean (Scotia Sea) with the southeastern part of the Pacific Ocean and extends into the Southern Ocean. The passage is named after the 16th century English pirate Sir Francis Drake. Drake's only remaining ship, after having passed through the Strait of Magellan, was blown far South in September of 1578. This incident implied an open connection between the Atlantic and Pacific oceans.

The 800 kilometres (500 mi) wide passage between Cape Horn and Livingston Island is the shortest crossing from Antarctica to the rest of the world's land. The boundary between the Atlantic and Pacific Oceans is sometimes taken to be a line drawn from Cape Horn to Snow Island 130 kilometres (81 mi) north of mainland Antarctica). Alternatively the meridian that passes through Cape Horn may be taken as the boundary. Both boundaries lie entirely within the Drake Passage.