The Prince of Wales Strait is a

strait A strait is an oceanic landform connecting two seas or two other large areas of water. The surface water generally flows at the same elevation on both sides and through the strait in either direction. Most commonly, it is a narrow ocean channe ...

in the

Northwest Territories The Northwest Territories (abbreviated ''NT'' or ''NWT''; french: Territoires du Nord-Ouest, formerly ''North-Western Territory'' and ''North-West Territories'' and namely shortened as ''Northwest Territory'') is a federal territory of Canada. ...

of Canada separating

Banks Island Banks Island is one of the larger members of the Arctic Archipelago. Situated in the Inuvik Region, and part of the Inuvialuit Settlement Region, of the Northwest Territories, it is separated from Victoria Island to its east by the Prince of Wa ...

to the northwest from

Victoria Island Victoria Island ( ikt, Kitlineq, italic=yes) is a large island in the Arctic Archipelago that straddles the boundary between Nunavut and the Northwest Territories of Canada. It is the List of islands by area, eighth-largest island in the world, ...

to the southeast. It extends from

Viscount Melville Sound Viscount Melville Sound is an arm of the Arctic Ocean in the Kitikmeot Region, Nunavut and the Inuvik Region, Northwest Territories, Canada. Forming part of the Parry Channel, it separates Victoria Island and Prince of Wales Island from the Qu ...

in the northeast to

Amundsen Gulf Amundsen Gulf is a gulf located mainly in the Inuvik Region, Northwest Territories, Canada with a small section in the Kitikmeot Region of Nunavut. It lies between Banks Island and Victoria Island and the mainland. It is approximately in leng ...

in the southwest. From late winter it is filled by ice that usually does not break up until August, if at all. Its namesake, Prince of Wales Island, lies over to the east. The strait is a possible route for the

Northwest Passage The Northwest Passage (NWP) is the sea route between the Atlantic and Pacific oceans through the Arctic Ocean, along the northern coast of North America via waterways through the Canadian Arctic Archipelago. The eastern route along the Arc ...

. The

Parry Channel The Parry Channel ( iu, ᑕᓪᓗᕈᑎᐅᑉ ᐃᒪᖓ, ''Tallurutiup Imanga'') is a natural waterway through the central Canadian Arctic Archipelago. Its eastern two-thirds lie in the territory of Nunavut, while its western third (west of 110° ...

leads west from

Baffin Bay Baffin Bay ( Inuktitut: ''Saknirutiak Imanga''; kl, Avannaata Imaa; french: Baie de Baffin), located between Baffin Island and the west coast of Greenland, is defined by the International Hydrographic Organization as a marginal sea of the Arct ...

to the strait or

M'Clure Strait The M'Clure Strait (sometimes rendered McClure Strait) is a strait on the edge of the Canadian Northwest Territories. It forms the northwestern end of the Parry Channel which extends east all the way to Baffin Bay and is thus a possible route for ...

to the northwest.

Robert McClure Vice-Admiral Sir Robert John Le Mesurier McClure (28 January 1807 – 17 October 1873) was an Irish explorer of Scots descent who explored the Arctic. In 1854 he traversed the Northwest Passage by boat and sledge, and was the first to ci ...

reached it from the west in 1850 and was frozen in. A sledge party showed that it was connected to Parry Channel; although he never traversed the strait, he declared confidently that the strait did connect over to the already-discovered Channel and the coordinates he provided for the eastern exit of the strait are accurate. This is generally considered the epochal event of the discovery of the first Northwest Passage (in the geographical sense). It was nonetheless considered ice-bound and unsuitable for navigation. McClure ultimately made it across the Canadian Arctic and made the first circumnavigation of the Americas.

Richard Collinson Admiral Sir Richard Collinson (7 November 1811 – 13 September 1883) was an English naval officer and explorer of the Northwest Passage. Early life He was born in Gateshead, Tyne and Wear, England, then part of County Durham. He joined the R ...

again entered it in 1851. Henry Larson made the first passage in 1944 after failing to pass the M'Clure Strait. In 1969, the

oil tanker An oil tanker, also known as a petroleum tanker, is a ship designed for the bulk transport of oil or its products. There are two basic types of oil tankers: crude tankers and product tankers. Crude tankers move large quantities of unrefined crud ...

was forced to use it after ice had blocked the M'Clure Strait. As the strait narrows to less than , vessels using it pass within undisputed Canadian waters (see Arctic Archipelago).

See also