In 1615 Robert Bylot was blocked by ice at its east end. In 1742 Christopher Middleton (navigator) reached the west end. He sailed north through Roes Welcome Sound to Repluse Bay. Seeing the strait ice-filled in August, it seemed clear that there was no passage so he gave the names Frozen Strait and Repulse Bay. In 1821 William Edward Parry passed the strait with no difficulty. In W. Gillies Ross' 1974 study Distribution, Migration, and Depletion of Bowhead Whales in Hudson Bay, 1860 to 1915, he suggests that bowhead whales appeared to migrate in the spring and fall through Roes Welcome Sound, but the possibility of migration through Frozen Strait cannot be ruled out.