Castel Bay is a

Canadian Arctic Northern Canada, colloquially the North or the Territories, is the vast northernmost region of Canada variously defined by geography and politics. Politically, the term refers to the three territories of Canada: Yukon, Northwest Territories and ...

waterway A waterway is any navigable body of water. Broad distinctions are useful to avoid ambiguity, and disambiguation will be of varying importance depending on the nuance of the equivalent word in other languages. A first distinction is necessary ...

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. ...

. It is a southern arm of

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 fo ...

on northeast

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 ...

. The mouth of the larger Mercy Bay is less than to the east. These bays are a part of Aulavik National Park. It is named by

Vilhjalmur Stefansson Vilhjalmur Stefansson (November 3, 1879 – August 26, 1962) was an Arctic explorer and ethnologist. He was born in Manitoba, Canada. Early life Stefansson, born William Stephenson, was born at Arnes, Manitoba, Canada, in 1879. His parents had ...

in honour of

Arctic explorer Arctic exploration is the physical exploration of the Arctic region of the Earth. It refers to the historical period during which mankind has explored the region north of the Arctic Circle. Historical records suggest that humankind have explore ...

Aarnout Castel.Gazetteer of the Northwest Territories

References

Bays of the Northwest Territories Banks Island {{NorthwestTerritories-geo-stub