The Seven Stones reef is a rocky
reef
A reef is a ridge or shoal of rock, coral or similar relatively stable material, lying beneath the surface of a natural body of water. Many reefs result from natural, abiotic processes— deposition of sand, wave erosion planing down rock out ...
nearly west-northwest (WNW) of
Land's End
Land's End ( kw, Penn an Wlas or ''Pedn an Wlas'') is a headland and tourist and holiday complex in western Cornwall, England, on the Penwith peninsula about west-south-west of Penzance at the western end of the A30 road. To the east of it is ...
,
Cornwall
Cornwall (; kw, Kernow ) is a historic county and ceremonial county in South West England. It is recognised as one of the Celtic nations, and is the homeland of the Cornish people. Cornwall is bordered to the north and west by the Atlantic ...
and east-northeast (ENE) of the
Isles of Scilly
The Isles of Scilly (; kw, Syllan, ', or ) is an archipelago off the southwestern tip of Cornwall, England. One of the islands, St Agnes, is the most southerly point in Britain, being over further south than the most southerly point of the ...
. The reef consists of two groups of rocks and is nearly long and in breadth. They rise out of deep water and are a
navigation
Navigation is a field of study that focuses on the process of monitoring and controlling the movement of a craft or vehicle from one place to another.Bowditch, 2003:799. The field of navigation includes four general categories: land navigation, ...
al hazard for shipping with 71 named wrecks and an estimated 200
shipwrecks
A shipwreck is the wreckage of a ship that is located either beached on land or sunken to the bottom of a body of water. Shipwrecking may be intentional or unintentional. Angela Croome reported in January 1999 that there were approximately ...
overall. The most infamous is the ''
Torrey Canyon
SS ''Torrey Canyon'' was an LR2 Suezmax class oil tanker with a cargo capacity of of crude oil. She ran aground off the western coast of Cornwall, United Kingdom, on 18 March 1967, causing an environmental disaster. At that time she was the ...
'' 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
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and North ...
.
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
An automatic weather station (AWS) is an automated version of the traditional weather station, either to save human labour or to enable measurements from remote areas. An AWS will typically consist of a weather-proof enclosure containing the data ...
is on the lightvessel.
Geography
Situated between Cornwall and the Isles of Scilly, the Seven Stones reef consists of seven (or eight) peaks, some of which appear at half ebb and others at low tide. They rise out of deep water, at and extend nearly two miles from north-northwest (NNW) to south-southeast (SSE) and are about a mile wide.
The sea always breaks over the reef and in good weather,
breakers are visible up to away. The rocks consists of small-grained
granite
Granite () is a coarse-grained (phaneritic) intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies undergro ...
which is part of the larger
Cornubian batholith
The Cornubian batholith is a large mass of granite rock, formed about 280 million years ago, which lies beneath much of Devon and Cornwall, the south-western peninsula of Great Britain. The main exposed masses of granite are seen at Dartmoor, Bo ...
. The batholith formed during the
Early Permian 01 or '01 may refer to:
* The year 2001, or any year ending with 01
* The month of January
* 1 (number)
Music
* '01 (Richard Müller album), 01'' (Richard Müller album), 2001
* 01 (Son of Dave album), ''01'' (Son of Dave album), 2000
* 01 (Urban ...
period, from about 300 to 275
Ma, at a late stage in the
Variscan orogeny
The Variscan or Hercynian orogeny was a geologic mountain-building event caused by Late Paleozoic continental collision between Euramerica (Laurussia) and Gondwana to form the supercontinent of Pangaea.
Nomenclature
The name ''Variscan'', comes f ...
. Some of the stones have been given names and include Flat Ledge, Flemish Ledges, North-east Rocks, Pollard's Rock, South Rock and a ledge known as the Town.
[
During the 1960s the reef was fished by a small fleet of French fishing vessels for ]crab
Crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" (abdomen) ( el, βραχύς , translit=brachys = short, / = tail), usually hidden entirely under the thorax. They live in all the ...
, crayfish
Crayfish are freshwater crustaceans belonging to the clade Astacidea, which also contains lobsters. In some locations, they are also known as crawfish, craydids, crawdaddies, crawdads, freshwater lobsters, mountain lobsters, rock lobsters, mu ...
and lobster
Lobsters are a family (biology), family (Nephropidae, Synonym (taxonomy), synonym Homaridae) of marine crustaceans. They have long bodies with muscular tails and live in crevices or burrows on the sea floor. Three of their five pairs of legs ...
. Some of these vessels were the first on the scene when the ''Torrey Canyon'' ran aground in 1967. On the vertical surfaces of the more exposed rocks there are clusters of jewel anemones and hydroids
Hydroids are a life stage for most animals of the class Hydrozoa, small predators related to jellyfish.
Some hydroids such as the freshwater '' Hydra'' are solitary, with the polyp attached directly to the substrate. When these produce buds ...
, and plumose anemones.
Shipwrecks
The reef is a major hazard to shipping as it is on the western boundary of a major north/south shipping route between the Cornish coast and the Isles of Scilly. The lightvessel, which has been on site since 1841, is to the north-east, not on the reef, a safety measure, as the sea is less rough away from the reef and also to ensure passing ships give the reef a wide berth. It is estimated that there are over 200 shipwrecks although only 71 are named.
The first recorded wreck was in early March 1656. Two English men o'war, the ''Primrose'' and ''Mayflower'', were searching for two Spanish
Spanish might refer to:
* Items from or related to Spain:
**Spaniards are a nation and ethnic group indigenous to Spain
**Spanish language, spoken in Spain and many Latin American countries
**Spanish cuisine
Other places
* Spanish, Ontario, Can ...
frigates
A frigate () is a type of warship. In different eras, the roles and capabilities of ships classified as frigates have varied somewhat.
The name frigate in the 17th to early 18th centuries was given to any full-rigged ship built for speed and ...
which had been patrolling the area and had captured a Bristol
Bristol () is a city, ceremonial county and unitary authority in England. Situated on the River Avon, it is bordered by the ceremonial counties of Gloucestershire to the north and Somerset to the south. Bristol is the most populous city in ...
bound vessel. The sixth rate
In the rating system of the Royal Navy used to categorise sailing warships, a sixth-rate was the designation for small warships mounting between 20 and 28 carriage-mounted guns on a single deck, sometimes with smaller guns on the upper works a ...
, 22 gun man o'war, ''Primrose'' lost her main topmast
The masts of traditional sailing ships were not single spars, but were constructed of separate sections or masts, each with its own rigging. The topmast is one of these.
The topmast is semi-permanently attached to the upper front of the lower ...
near the Longships, off Land's End
Land's End ( kw, Penn an Wlas or ''Pedn an Wlas'') is a headland and tourist and holiday complex in western Cornwall, England, on the Penwith peninsula about west-south-west of Penzance at the western end of the A30 road. To the east of it is ...
and drifted onto the Seven Stones. She managed to free herself and later sank in taking sixteen men, two women and a child with her. At the investigation into the loss, Trinity House
"Three In One"
, formation =
, founding_location = Deptford, London, England
, status = Royal Charter corporation and registered charity
, purpose = Maintenance of lighthouses, buoys and beacons
, he ...
, on behalf of the Admiralty
Admiralty most often refers to:
*Admiralty, Hong Kong
*Admiralty (United Kingdom), military department in command of the Royal Navy from 1707 to 1964
*The rank of admiral
*Admiralty law
Admiralty can also refer to:
Buildings
* Admiralty, Traf ...
, stated that they could not find any chart that showed the reef. The Admiralty found that there was no neglect either by the Officers or company, the place of wreck being a rock not visible nor described in any chart they could find.[ The largest loss of life was on 27 February 1748 with the sinking of the fourteen-gun ]sloop
A sloop is a sailboat with a single mast typically having only one headsail in front of the mast and one mainsail aft of (behind) the mast. Such an arrangement is called a fore-and-aft rig, and can be rigged as a Bermuda rig with triangular sa ...
HMS ''Lizard'' which was wrecked with the loss of over one hundred crew.[
On 18 March 1967 the world's first major oil pollution incident occurred when the ]supertanker
An oil tanker, also known as a petroleum tanker, is a ship designed for the bulk cargo, bulk transport of petroleum, oil or its products. There are two basic types of oil tankers: crude tankers and product tankers. Crude tankers move large quant ...
''Torrey Canyon'' hit the Pollard's Rock, tearing a gash in her side and spilling 860,000 barrels of oil into the sea. Westerly winds and currents caused the oil to pollute of the Cornish coast and of the Brittany
Brittany (; french: link=no, Bretagne ; br, Breizh, or ; Gallo language, Gallo: ''Bertaèyn'' ) is a peninsula, Historical region, historical country and cultural area in the west of modern France, covering the western part of what was known ...
coast. She now lies in of water. Large amounts of toxic detergent
A detergent is a surfactant or a mixture of surfactants with cleansing properties when in dilute solutions. There are a large variety of detergents, a common family being the alkylbenzene sulfonates, which are soap-like compounds that are more ...
was sprayed on the oil in an attempt to disperse it and, along with the oil, accounted for the loss of much of the marine life and 15,000 birds. At the time it was the world's costliest shipping disaster, and to date, still the worst oil spill on the coast of the United Kingdom.[
]
Seven Stones lightvessel
The government was first petitioned for a light on the reef in 1826 (with no success), and a second petition in 1839 was supported by the British Channel ports, Liverpool merchants and the Chamber of Commerce of Waterford
"Waterford remains the untaken city"
, mapsize = 220px
, pushpin_map = Ireland#Europe
, pushpin_map_caption = Location within Ireland##Location within Europe
, pushpin_relief = 1
, coordinates ...
. A meeting held on 21 February 1840 in Falmouth declared the reef would shorten the route around the Isles of Scilly by up to 36 hours, and on 31 July 1841 a lightvessel
A lightvessel, or lightship, is a ship that acts as a lighthouse. They are used in waters that are too deep or otherwise unsuitable for lighthouse construction. Although some records exist of fire beacons being placed on ships in Roman times, t ...
(also known as a lightship) was seen at nearby St Mary's, Isles of Scilly.[
A lightvessel was first moored near the reef on 20 August 1841 and exhibited its first light on 1 September 1841. She is permanently anchored in and is north-east (NE) of the reef.][ Just over a year later on 25 November 1842 her cable parted and she almost became a wreck when she drove over the reef at high tide. The crew steered the ship to New Grimsby, ]Tresco Tresco may refer to:
* Tresco, Elizabeth Bay, a historic residence in New South Wales, Australia
* Tresco, Isles of Scilly, an island off Cornwall, England, United Kingdom
* Tresco, Victoria, a town in Victoria, Australia
* a nickname referring to ...
where she stayed until 6 January 1843. She broke adrift again that January and went over the reef a second time the following March. Two of the crew drowned on 15 October 1851 when one of the lightship's longboats capsized, in a squall, on a journey from Scilly with stores.[ A ]meteor
A meteoroid () is a small rocky or metallic body in outer space.
Meteoroids are defined as objects significantly smaller than asteroids, ranging in size from grains to objects up to a meter wide. Objects smaller than this are classified as micr ...
exploded over the lightvessel, at 2 am on 13 November 1872, showering the deck with cinders. The ship was replaced with a lighted buoy
A buoy () is a floating device that can have many purposes. It can be anchored (stationary) or allowed to drift with ocean currents.
Types
Navigational buoys
* Race course marker buoys are used for buoy racing, the most prevalent form of yac ...
during the Second World War
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...
after being frequently bombed and machine-gunned by German
German(s) may refer to:
* Germany (of or related to)
** Germania (historical use)
* Germans, citizens of Germany, people of German ancestry, or native speakers of the German language
** For citizens of Germany, see also German nationality law
**Ge ...
pilots
An aircraft pilot or aviator is a person who controls the flight of an aircraft by operating its directional flight controls. Some other aircrew members, such as navigators or flight engineers, are also considered aviators, because they a ...
.[
Since 1987, the ship has been automated and unmanned with the accommodation and storage areas filled with foam to help with buoyancy in the event of a collision.][
The Seven Stones lightvessel also acts as an automatic weather station.][
]
Folklore
There is a legend, part of the King Arthur
King Arthur ( cy, Brenin Arthur, kw, Arthur Gernow, br, Roue Arzhur) is a legendary king of Britain, and a central figure in the medieval literary tradition known as the Matter of Britain.
In the earliest traditions, Arthur appears as a ...
scenario, that there was once a land between Cornwall and the Isles of Scilly, known as Lyonesse
Lyonesse is a kingdom which, according to legend, consisted of a long strand of land stretching from Land's End at the southwestern tip of Cornwall, England, to what is now the Isles of Scilly in the Celtic Sea portion of the Atlantic Ocean. I ...
, with several towns and 140 churches. In the legend it was flooded and became sea. Only one man survived, Trevelyan, who riding on a black horse managed to reach dry land. The area is also part of Arthurian
King Arthur ( cy, Brenin Arthur, kw, Arthur Gernow, br, Roue Arzhur) is a legendary king of Britain, and a central figure in the medieval literary tradition known as the Matter of Britain.
In the earliest traditions, Arthur appears as a ...
legend when Merlin cast a spell to engulf the land and the forces of Mordred
Mordred or Modred (; Welsh: ''Medraut'' or ''Medrawt'') is a figure who is variously portrayed in the legend of King Arthur. The earliest known mention of a possibly historical Medraut is in the Welsh chronicle ''Annales Cambriae'', wherein he ...
who were chasing the fleeing army of King Arthur
King Arthur ( cy, Brenin Arthur, kw, Arthur Gernow, br, Roue Arzhur) is a legendary king of Britain, and a central figure in the medieval literary tradition known as the Matter of Britain.
In the earliest traditions, Arthur appears as a ...
who he had just slain in battle. Arthur's supporters managed to reach high ground in the Isles of Scilly. Fishermen are said to be able to hear the sound of church bells.[ Rising sea levels since the last ice age fathered the legend and they may have been an island in the not too distant past.]
See also
* List of shipwrecks of Cornwall
The list of shipwrecks of Cornwall lists the ships which sank on or near the coasts of mainland Cornwall. The list includes ships that sustained a damaged hull, which were later refloated and repaired. Around a coast of approximately an estimat ...
* List of shipwrecks of the Isles of Scilly
The list of shipwrecks of the Isles of Scilly is a list of ships which sank on or near the Isles of Scilly.
The list includes ships that sustained a damaged hull, which were later refloated and repaired.
Before 1601
1305
* an unnamed sailin ...
References
External links
*
*
{{coord, 50, 03, N, 6, 04, W, source:enwiki-plaintext-parser, display=title
Reefs of England
Underwater diving sites in England
Landforms of Cornwall
Uninhabited islands of the Isles of Scilly
Ship graveyards