Spermwhale Ridge (65°47′S 62°48′W / 65.783°S 62.800°W / -65.783; -62.800) is a sharp-crested ridge rising to about 800 m in northern Voden Heights and flanking the south side of Flask Glacier west of Bulkington Pass, on Oscar II Coast, Graham Land. Named by the United Kingdom Antarctic Place-Names Committee (UK-APC) in 1987. One of several names in this area from Melville's Moby Dick, reflecting a whaling theme.

Location of Oscar II Coast on Antarctic Peninsula.

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