Overview
Before the Little Ice Age, Norwegian Vikings sailed as far north and west as Ellesmere Island, Skraeling Island and Ruin Island for hunting expeditions and trading with the Inuit groups who already inhabited the region. Between the end of the 15th century and the 20th century, colonial powers from Europe dispatched explorers in an attempt to discover a commercial sea route north and west around North America. The Northwest Passage represented a new route to the established trading nations of Asia, as in 1493 to defuse trade disputes, Pope Alexander VI split the discovered world in two between Spain and Portugal; thus France, the Netherlands, and England were left without a sea route to Asia, either via Africa or South America, unless their ships defied the ban and explored such waters regardless (they did, and the ban became unenforceable). England called the hypothetical northern route the "Northwest Passage". The desire to establish such a route motivated much of the European exploration of both coasts of North America. When it became apparent that there was no route through the heart of the continent, attention turned to the possibility of a passage through northern waters. This was driven in some part by scientific naiveté, namely an early belief that seawater was incapable of freezing (as late as the mid-18th century, Captain James Cook had reported, for example, that Antarctic icebergs had yielded fresh water, seemingly confirming the hypothesis), and that a route close to the North Pole must therefore exist. The belief that a route lay to the far north persisted for several centuries and led to numerous expeditions into the Arctic, including the attempt by Sir John Franklin in 1845. In 1906, Roald Amundsen first successfully completed a path from Greenland to Alaska in the sloop Gjøa. Since that date, several fortified ships have made the journey.
From west to east the Northwest Passage runs through the Bering Strait (separating Russia and Alaska), Chukchi Sea, Beaufort Sea, and then through several waterways that go through the Canadian Arctic Archipelago. There are five to seven routes through the archipelago, including the McClure Strait, Dease Strait, and the Prince of Wales Strait, but not all of them are suitable for larger ships. The passage then goes through Baffin Bay and the Davis Strait into the Atlantic Ocean.
There has been speculation that with the advent of climate change the passage may become clear enough of ice to again permit safe commercial shipping for at least part of the year. On August 21, 2007, the Northwest Passage became open to ships without the need of an icebreaker. According to Nalan Koc of the Norwegian Polar Institute this is the first time it has been clear since they began keeping records in 1972. The Northwest Passage opened again on August 25, 2008.
Thawing ocean or melting ice simultaneously opened up the Northwest Passage and the Northern Sea Route (Northeast Passage), making it possible to sail around the Arctic ice cap. Compared to 1979, the Daily Mail published "Blocked: The Arctic ice, showing as a pink mass in the 1979 picture, links up with northern Canada and Russia." Awaited by shipping companies, this 'historic event' will cut thousands of miles off their routes. Warning, however, that the NASA satellite images indicated the Arctic may have entered a "death spiral" caused by climate change, Professor Mark Serreze, a sea ice specialist at National Snow and Ice Data Center (NSIDC), USA, said: "The passages are open. It's a historic event. We are going to see this more and more as the years go by." Due to Arctic shrinkage, the Beluga group of Bremen, Germany, sent the first Western commercial vessels through the Northern Sea Route (Northeast Passage) in 2009. However, Canada's Prime Minister Stephen Harper announced that "ships entering the North-West passage should first report to his government."
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