North-West Passage

The Northwest Passage (NWP) 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 (NEP).
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.

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 (e.g. Tierra del Fuego). 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:
* East
** East of Baffin Island: Baffin Bay between Greenland and Baffin Island to Lancaster Sound at the north end of Baffin Island, or
** West of Baffin Island (impractical): Through Hudson Strait south of Baffin Island, north through the Foxe Basin, west through the Fury and Hecla Strait, north to Lancaster Sound through the Gulf of Boothia and Prince Regent Inlet. The Fury and Hecla Strait is usually closed by ice.
* Centre: Canadian Arctic Archipelago
** North: From Lancaster Sound west through the Parry Channel to the Prince of Wales Strait on the northwest side of Victoria Island. M'Clure Strait to the northwest is ice-filled; southwest through the Prince of Wales Strait between Victoria Island and Banks Island might be passable, or
** South: From Lancaster Sound west past Prince Regent Inlet (basically a cul-de-sac but it may be possible to exit west through the Bellot Strait), past Somerset Island, south through Peel Sound between Somerset Island and Prince of Wales Island, either southwest through Victoria Strait (ice-choked), or directly south along the coast through Rae Strait and James Ross Strait and west through Simpson Strait south of King William Island (shallow) into Queen Maud Gulf, then west along the mainland coast south of Victoria Island.
* West: There being no major islands, follow the coast to the Bering Strait.

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 (late Middle Ages to the 19th century), 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. (As late as the mid-18th century, Captain James Cook had reported that Antarctic icebergs had yielded fresh water, seemingly confirming the hypothesis.) 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 (separating Russia and Alaska), 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 (and the Northern Sea Route) 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 (NSIDC) 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 (which does not tolerate delays well) and because of the relative isolation of the passage (which impedes shipping companies from optimizing their operations by grouping multiple stopovers on the same itinerary), 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 (as of 2014, only 12 percent of Canada's Arctic waters have been charted to modern standards).

The Beluga group of Bremen, Germany, sent the first Western commercial vessels through the Northern Sea Route (Northeast Passage) 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.

Extent

The International Hydrographic Organization defines the limits of the Northwestern Passages as follows:

Historical expeditions

As a result of their westward explorations and their settlement of Greenland, the Vikings sailed as far north and west as Ellesmere Island, Skraeling Island for hunting expeditions and trading with Inuit groups. The subsequent arrival of the Little Ice Age is thought to have been one of the reasons that European seafaring into the Northwest Passage ceased until the late 15th century.

Strait of Anián

In 1539, Hernán Cortés commissioned Francisco de Ulloa to sail along the Baja California Peninsula on the western coast of North America. Ulloa concluded that the Gulf of California was the southernmost section of a strait supposedly linking the Pacific with the Gulf of Saint Lawrence. His voyage perpetuated the notion of the Island of California and saw the beginning of a search for the Strait of Anián.

The strait probably took its name from Ania, a Chinese province mentioned in a 1559 edition of Marco Polo's book; it first appears on a map issued by Italian cartographer Giacomo Gastaldi about 1562. Five years later Bolognino Zaltieri issued a map showing a narrow and crooked Strait of Anian separating Asia from the Americas. The strait grew in European imagination as an easy sea lane linking Europe with the residence of Khagan (the Great Khan) in Cathay (northern China).

Cartographers and seamen tried to demonstrate its reality. Sir Francis Drake sought the western entrance in 1579. The Greek pilot Juan de Fuca, sailing from Acapulco (in Mexico) under the flag of the Spanish crown, claimed he had sailed the strait from the Pacific to the North Sea and back in 1592. The Spaniard Bartholomew de Fonte claimed to have sailed from Hudson Bay to the Pacific via the strait in 1640.

Northern Atlantic

The first recorded attempt to discover the Northwest Passage was the east–west voyage of John Cabot in 1497, sent by Henry VII in search of a direct route to the Orient. In 1524, Charles V sent Estêvão Gomes to find a northern Atlantic passage to the Spice Islands. An English expedition was launched in 1576 by Martin Frobisher, who took three trips west to what is now the Canadian Arctic in order to find the passage. Frobisher Bay, which he first charted, is named after him.

As part of another expedition, in July 1583 Sir Humphrey Gilbert, who had written a treatise on the discovery of the passage and was a backer of Frobisher, claimed the territory of Newfoundland for the English crown. On August 8, 1585, the English explorer John Davis entered Cumberland Sound, Baffin Island.

The major rivers on the east coast were also explored in case they could lead to a transcontinental passage. Jacques Cartier's explorations of the Saint Lawrence River in 1535 were initiated in hope of finding a way through the continent. Cartier became persuaded that the St. Lawrence was the Passage; when he found the way blocked by rapids at what is now Montreal, he was so certain that these rapids were all that was keeping him from China (in French, ''la Chine''), that he named the rapids for China. Samuel de Champlain renamed them Sault Saint-Louis in 1611, but the name was changed to Lachine Rapids in the mid-19th century.

In 1602, George Weymouth became the first European to explore what would later be called Hudson Strait when he sailed into the Strait. Weymouth's expedition to find the Northwest Passage was funded jointly by the British East India Company and the Muscovy Company. ''Discovery'' was the same ship used by Henry Hudson on his final voyage.

John Knight, employed by the British East India Company and the Muscovy Company, set out in 1606 to follow up on Weymouth's discoveries and find the Northwest Passage. After his ship ran aground and was nearly crushed by ice, Knight disappeared while searching for a better anchorage.

In 1609, Henry Hudson sailed up what is now called the Hudson River in search of the Passage; encouraged by the saltiness of the water in the estuary,