Tanner Island (54°38′S 36°46′W) is the westernmost and largest of the Pickersgill Islands, rising to 145m off the south coast of South Georgia. Named by United Kingdom Antarctic Place-Names Committee (UK-APC) for Dr. P.W.G. Tanner, a British Antarctic Survey (BAS) geologist who worked on the island during the 1975-76 field season.
Map of Tanner Island, SIQQ 1ZZ, South Georgia and the South Sandwich Islands
References
Tanner Island Wikipedia(Text) CC BY-SA