Ammarqua Strait Ammarqua Strait Ammarqua Strait (old spelling: "Angmarqua") is a strait in the southern part of the Upernavik Archipelago in the Qaasuitsup municipality in northwestern Greenland. The strait separates Nutaarmiut Island from four large islands in the east, Uilortussoq Island and Saninngassoq Island in the north; Nako Island and Akuliaruseq Island in the south. The Eqalugaarsuit Suulluat Fjord opens into Ammarqua Strait immediately to the east of the southern cape, to the north of Kangeq Peninsula off the mainland of Greenland. At the southern mouth of the strait at the confluence with Baffin Bay are two islands: the Ineraq Island and
Investigator Strait boundary with Gulf St Vincent is the line from Troubridge Point on Yorke Peninsula to Cape Jervis on Fleurieu Peninsula. Its boundary with Backstairs Passage is the line from Cape Jervis on Fleurieu Peninsula to Kangaroo Head (west of Penneshaw) on Kangaroo Island. Flinders noted that Backstairs Passage is a body of water separate to Investigator Strait. The boundary between the strait and Nepean Bay on the north-east coast of Kangaroo Island is a line between Point Marsden and Kangaroo Head. The Strait’s western boundary by definition is the line from Cape Spencer on Yorke Peninsula to Cape Borda on