Rockall Helen's Reef (the latter was named in 1830). Notes Bibliography Rockall Rockall () is a British uninhabited granite islet located within the exclusive economic zone (EEZ) of the United Kingdom, situated in the North Atlantic Ocean. Its approximate distances from the closest large islands are: west of Scotland; northwest of Ireland; and 700 km (440 miles) south of Iceland. The nearest permanently inhabited place is North Uist, an island in the Outer Hebrides of Scotland, 370 km (230 miles) to the east. The United Kingdom claimed Rockall in 1955 and incorporated it as a part of Scotland in 1972. Ireland
Rogue wave existence has also since been confirmed by video and photographs, and satellite imagery and radar of the ocean surface, by stereo wave imaging systems, by pressure transducers on the sea-floor and notably by oceanographic research vessel. In February 2000, a British oceanographic research vessel, the RRS "Discovery", sailing in the Rockall Trough west of Scotland encountered the largest waves ever recorded by scientific instruments in the open ocean, with a SWH of and individual waves up to . "In 2004 scientists using three weeks of radar images from European Space Agency satellites found ten rogue waves, each or higher." A