The Seven Stones reef is a rocky reef nearly 15 miles (24 km) west of Land's End, Cornwall and 7 miles (11 km) east-northeast of the Isles of Scilly. The reef consists of two groups of rocks and is nearly 2 miles (3.2 km) long and 1 mile (1.6 km) in breadth. They rise out of deep water and are a navigational hazard for shipping with 71 named wrecks and an estimated 200 shipwrecks overall. The most infamous is the Torrey Canyon in 1967, which was at that time the world's costliest shipping disaster and, to date, still the worst oil spill on the coast of the United Kingdom.[1]
The Sevenstones lightvessel has been situated to the east of the reef since 1841, to warn ships of the danger and to mark the western boundary of a major north/south shipping route between the Isles of Scilly and the Cornish coast. An automatic weather station is on the lightvessel.
- ^ Larn, Richard; Larn Bridget (1997). Shipwreck Index of the British Isles. London: Lloyd's Register of Shipping.