British navy ice patrol ship 'HMS Protector' conducts the first systematic survey since the 1970's of waters off Tristan da Cunha in the South Atlantic. In the first survey of the area to be conducted using modern techniques, HMS Protector used her motorboat and onboard systems to make a multibeam echo sounder survey of the Edinburgh Anchorages. The territory is the most remote inhabited archipelago in the world, lying 1,750 miles (2,816km) from the nearest land, South Africa, and 2,088 miles (3,360km) from South America.