Signy is situated in the in the Scotia Sea about 600 km NE of the Antarctic Peninsula and approximately 900km SW of South Georgia. It is the one of the four major islands belonging to South Orkneys alongside Coronation, Powell and Laurie. Although South Orkeneys were officially discovered in 1821 by British and American sealers, Signy itself was discovered a few years later by Metthew Brisbane (who was part of the expedition led by James Weddell surveying the south coast of Coronation Island). It was named after Signy Therese Sørlle the wife of the Norwegian whaler ship's captain, Petter Sørlle. Signy is about 6.5 km long, 5 km wide and ranges in elevation from the sea level to 288m.