Northwest Passage


The Northwest Passage is the sea lane between the Atlantic and Pacific oceans through the Arctic Ocean, near the northern coast of North America via waterways through the Arctic Archipelago of Canada. The eastern route along the Arctic coasts of Norway and Siberia is accordingly called the Northeast Passage.
The various islands of the archipelago are separated from one another and from mainland Canada by a series of Arctic waterways collectively known as the Northwest Passages, Northwestern Passages or the Canadian Internal Waters. In British English it is often spelled North-west Passage.
For centuries, European explorers, beginning with Christopher Columbus in 1492, sought a navigable passage as a possible trade route to Asia, but were blocked by North, Central, and South America; by ice, or by rough waters. An ice-bound northern route was discovered in 1850 by the Irish explorer Robert McClure, whose expedition completed the passage by hauling sledges. Scotsman John Rae explored a more southerly area in 1854 through which Norwegian Roald Amundsen made the first complete passage entirely by ship in 1903–1906. Until 2009, the Arctic pack ice prevented regular marine shipping throughout most of the year. Arctic sea ice decline, linked primarily to climate change, has rendered the waterways more navigable for ice navigation.
The contested sovereignty claims over the waters may complicate future shipping through the region: the Canadian government maintains that the Northwestern Passages are part of Canadian Internal Waters, but the United States claims that they are an international strait and transit passage, allowing free and unencumbered passage. If, as the head of a Canadian mining company claims, parts of the eastern end of the Passage are barely deep, the route's viability as a Euro-Asian shipping route is reduced. In 2016, Chinese shipping line COSCO expressed a desire to make regular voyages of cargo ships using the passage to the eastern United States and Europe, after a successful passage by Nordic Orion of 73,500 tonnes deadweight tonnage in September 2013. Fully laden, Nordic Orion sat too deep in the water to sail through the Panama Canal.

Routes

The Northwest Passage has three sections:
Many attempts were made to find a salt water exit west from Hudson Bay, but the Fury and Hecla Strait in the far north is blocked by ice. The eastern entrance and main axis of the northwest passage, the Parry Channel, was found in 1819. The approach from the west through Bering Strait is impractical because of the need to sail around ice near Point Barrow. East of Point Barrow the coast is fairly clear in summer. This area was mapped in pieces from overland in 1821–1839. This leaves the large rectangle north of the coast, south of Parry Channel and west of Baffin Island. This area was mostly mapped in 1848–1854 by ships looking for Franklin's lost expedition. The first crossing was made by Roald Amundsen in 1903–1906. He used a small ship and hugged the coast.

Overview

Early expeditions

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 and people of the Dorset culture who inhabited the region. Between the end of the 15th century and the 20th century, colonial powers from Europe dispatched explorers 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.
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, also known as the New World. 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. There was a lack of scientific knowledge about conditions; for instance, some people believed that seawater was incapable of freezing. Explorers thought that an Open Polar Sea close to the North Pole must exist. The belief that a route lay to the far north persisted for several centuries and led to numerous expeditions into the Arctic. Many ended in disaster, including that by Sir John Franklin in 1845. While searching for him the McClure Arctic Expedition discovered the Northwest Passage in 1850.
In 1906, the Norwegian explorer Roald Amundsen was the first to complete the passage solely by ship, from Greenland to Alaska in the sloop. Since that date, several fortified ships have made the journey.
From east to west, the direction of most early exploration attempts, expeditions entered the passage from the Atlantic Ocean via the Davis Strait and through Baffin Bay, both of which are in Canada. Five to seven routes have been taken through the Canadian Arctic Archipelago, via the McClure Strait, Dease Strait, and the Prince of Wales Strait, but not all of them are suitable for larger ships. From there ships passed through westward through the Beaufort Sea and the Chukchi Sea, and then southwards through the Bering Strait, into the Pacific Ocean.

Potential as a shipping lane

In the 21st century, major changes to the ice pack due to climate change have stirred speculation that the passage may become clear enough of ice to 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 was the first time the Passage has been clear since they began keeping records in 1972. The Northwest Passage opened again on August 25, 2008. It is usually reported that ocean thawing will open up the Northwest Passage for various kind of ships, making it possible to sail around the Arctic ice cap and possibly cutting thousands of miles off shipping routes. Warning that the NASA satellite images suggested that the Arctic had entered a "death spiral" caused by climate change, Professor Mark Serreze, a sea ice specialist at the U.S. National Snow and Ice Data Center said: "The passages are open. It's a historic event. We are going to see this more and more as the years go by."
However, some thick sections of ice will remain hard to melt in the shorter term. Drifting and persistence of large chunks of ice, especially in springtime, can be problematic as they can clog entire straits or severely damage a ship's hull. Cargo routes may thus be slow and uncertain, depending on prevailing conditions and the ability to predict them. Because much containerized traffic operates in a just-in-time mode and because of the relative isolation of the passage, the Northwest Passage and other Arctic routes are not always seen as promising shipping lanes by industry insiders, at least for the time being. The uncertainty related to physical damage to ships is also thought to translate into higher insurance premiums, especially because of the technical challenges posed by Arctic navigation. A 2025 study suggests that although the navigability may increase over time, reliable planning requires explicit consideration of highly variable ice conditions.
File:Map of the Arctic region showing the Northeast Passage, the Northern Sea Route and Northwest Passage, and bathymetry.png|thumb|upright=1.5|Map of the Arctic region showing the Northeast Passage, the Northern Sea Route within it, and the Northwest Passage
The Beluga group of Bremen, Germany, sent the first Western commercial vessels through the Northern Sea Route in 2009. Canada's Prime Minister Stephen Harper announced that "ships entering the North-West passage should first report to his government".
The first commercial cargo ship to have sailed through the Northwest Passage was in August 1969. SS Manhattan, of 115,000 deadweight tonnage, was the largest commercial vessel ever to navigate the Northwest Passage.
The largest passenger ship to navigate the Northwest Passage was the cruise liner of gross tonnage 69,000. Starting on August 10, 2016, the ship sailed from Vancouver to New York City with 1,500 passengers and crew, taking 28 days.
In 2018, two of the freighters leaving Baffinland's port in the Milne Inlet, on Baffin Island's north shore, were bound for ports in Asia. Those freighters did not sail west through the remainder of the Northwest Passage; they sailed east, rounded the tip of Greenland, and transited Russia's Northern Sea Route.
Experts predict that the passage may be traversable four months of the year by the end of the 21st century.