Fullastern Rock (67°37′S 69°26′W / 67.617°S 69.433°W / -67.617; -69.433) is an isolated submerged rock lying in the middle of Johnston Passage 7 nautical miles (13 km) west-northwest of Cape Adriasola, Adelaide Island. The rock is potentially dangerous to ships and was so named when the RRS John Biscoe was compelled to go full astern to avoid this hazard.[1]

References

edit
  1. ^ "Fullastern Rock". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved 2012-04-12.

  This article incorporates public domain material from "Fullastern Rock". Geographic Names Information System. United States Geological Survey.