Torrey Canyon oil spill

The Torrey Canyon oil spill on the southwest coast of the United Kingdom in the spring of 1967 is one of the world's most serious oil spills and left an international legal and environmental legacy that lasted decades. At the time the world's most serious oil spill, as of 2015 it remains the United Kingdom's worst, with an estimated 32 million gallons of crude oil spilled.[1] The wreck of the supertanker SS Torrey Canyon affected hundreds of miles of coastline in the United Kingdom, France, Guernsey, and Spain and mitigation efforts involved bombing raids by aircraft from the Royal Air Force and Royal Navy.[2]

Torrey Canyon left Mina al-Ahmadi with a full cargo of crude oil in February 1967, reached the Canary Islands in March, with an intended destination of Milford Haven in West Wales. On 18 March 1967, she struck Pollard's Rock on Seven Stones reef between the Cornish mainland and the Isles of Scilly.

Ship construction & Extension

When laid down in the United States in 1959, she had a capacity of 60,000 tons, but the ship was enlarged in Japan to 120,000 tons capacity. At the time of the accident, she was registered in Liberia[3][4] and owned by Barracuda Tanker Corporation, a subsidiary of Union Oil Company of California but chartered to British Petroleum. She was 974.4 feet (297.0 m) long, 125.4 feet (38.2 m) beam and 68.7 feet (20.9 m) draught.

The accident

The accident is attributed to errors made by the ship's master and two noted flaws in the design of the steering control:

  1. The steering lever was designed to switch the steering to a "Control mode", intended for use in maintenance only, which disconnected the rudder from the steering wheel.
  2. The design of the steering selector unit did not provide an indication of the peculiar mode at the helm.[5][6][7]

Oil spill

Torrey Canyon left the Kuwait National Petroleum Company refinery at Mina al-Ahmadi on 19 February 1967 fully laden with crude oil. She reached the Canary Islands on March 14. From there the Master was informed of her destination for the voyage: Milford Haven, Wales. On 18 March 1967, owing to a navigational error, she struck Pollard's Rock on the Seven Stones reef, between the Cornish mainland and the Isles of Scilly.

The tanker did not have a scheduled route and as such lacked a complement of full scale charts of the Scilly Islands. To navigate the region, the vessel used LORAN, but not the more accurate Decca Navigator. When a collision with a fishing fleet became imminent, there was some confusion between the Master and the helmsman as to their exact position. Significant further delay arose due to uncertainty as to whether the vessel was in manual or automatic steering mode. By the time the problem was corrected, a grounding was unavoidable. In the hours and days to follow, extensive attempts to float the vessel off the reef proved unsuccessful, and even resulted in the death of a member of the Dutch salvage team, Captain Stal.

After the attempts to move the vessel failed and ship began to break up, the focus became cleanup and containment of the resulting oil spill. Detergent was deployed on a large scale by Cornwall fire brigade and attending Royal Navy vessels in an attempt to disperse the oil. UK Prime Minister Harold Wilson and his cabinet held a mini cabinet meeting at the Royal Naval Air Station Culdrose and decided to set fire to the vessel and surrounding oil slick to limit the extent of the oil disaster.

On 28 March 1967, the Fleet Air Arm sent Blackburn Buccaneer planes from RNAS Lossiemouth to drop forty-two 1,000-lb bombs on the ship. Then, the Royal Air Force sent Hawker Hunter jets from RAF Chivenor to drop cans of aviation fuel to make the oil blaze.[8] However, exceptionally high tides put the fire out and it took further bombing runs by Sea Vixens from the RNAS Yeovilton and Buccaneers from the Royal Navy Air Station Brawdy, as well as more RAF Hunters with liquified petroleum jelly to ignite the oil. Attempts to use foam booms to contain the oil slick were ineffectual because of the high sea state. Bombing continued into the next day before Torrey Canyon finally sank.[9]

The wreck now lies at a depth of 30 metres (98 ft).

Some of the oil from the ship was dumped in a quarry on the Chouet headland on Guernsey in the Channel Islands, where it remains to this day. Efforts to rid the island of the oil have continued with limited success.[2][10]

An inquiry in Liberia, where the ship was registered, found Shipmaster Pastrengo Rugiati was to blame, because he took a shortcut to save time in getting to Milford Haven.

Impact

About 50 miles (80 km) of French and 120 miles (190 km) of Cornish coast were contaminated. Around 15,000 sea birds were killed, along with huge numbers of marine organisms, before the 270 square miles (700 km2) slick dispersed. Much damage was caused by the heavy use of so-called detergents to break up the slick – these were first-generation variants of products originally formulated to clean surfaces in ships' engine-rooms, with no concern over the toxicity of their components. Many observers believed that they were officially referred to as 'detergents', rather than the more accurate 'solvent-emulsifiers', to encourage comparison with much more benign domestic cleaning products. Some 42 vessels sprayed over 10,000 tons of these dispersants onto the floating oil and they were also deployed against oil stranded on beaches. In Cornwall, they were often misused – for example, by emptying entire 45-gallon drums over the clifftop to 'treat' inaccessible coves or by pouring a steady stream from a low-hovering helicopter. On the heavily oiled beach at Sennen Cove, dispersant pouring from drums was 'ploughed' into the sand by bulldozers over a period of several days, burying the oil so effectively that it could still be found a year or more later.

The British government was strongly criticised for its handling of the incident, which was at that time the costliest shipping disaster ever. The RAF and the Royal Navy also came in for ridicule, as 25% of the 42 bombs dropped missed the enormous stationary target.

Claims were made by the British and French governments against the owners of the vessel and the subsequent settlement was the largest ever in marine history for an oil claim. The British government was able to serve its writ against the owners only by arresting the Torrey Canyon's sister ship, the Lake Palourde, when she put in for provisions at Singapore, four months after the oil spill. A young British lawyer, Anthony O'Connor, from a Singaporean law firm, Drew & Napier, was deputised to arrest the ship on behalf of the British government by attaching a writ to its mast. O'Connor was able to board the ship and serve the writ as the ship's crew thought he was a whisky salesman. The French government, alerted to the Lake Palourde's presence, pursued the ship with motor boats, but crew were unable to board and serve their writ.[11]

The disaster led to many changes in international regulations, such as the International Convention on Civil Liability for Oil Pollution Damage (CLC) of 1969, which imposed strict liability on ship owners without the need to prove negligence, and the 1973 International Convention for the Prevention of Pollution from Ships.

Cultural references and impact

The Torrey Canyon disaster was the subject of a satirical song by Serge Gainsbourg on the album Initials B.B.. The story also appeared in an episode of Heartbeat, when Vernon Scripps contributed to the insurance of the vessel, and lost all his recently acquired fortune as a result.

The then little known botanist David Bellamy came to public prominence as an environmental consultant during the disaster. He made his first prominent TV appearances after publishing a report on the episode.[12] He went on to be a leading environmental and nature campaigner for decades.

The problems of reducing death following "immersion hypothermia" which were highlighted by the disaster led to "development of new techniques for safety and rescue at sea" and changes in the way survivors are winched from the sea.[13]

See also

References

  1. ↑ "The 13 largest oil spills in history". Mother Nature Network. 16 July 2010. Retrieved 28 December 2012.
  2. 1 2 "Oil spills: Legacy of the Torrey Canyon". The Guardian. 24 June 2010. Retrieved 28 December 2012.
  3. ↑ "The Torry Canyon's last voyage". Archived from the original on 5 July 2009. Retrieved 21 May 2010.
  4. ↑ "The Torry Canyon's last voyage, web.archive.org". Archived from the original on 5 July 2009. Retrieved 19 August 2015.
  5. ↑ Kumar, Capt Arvind. Extra Master, Optimising Manning & Machinery (pdf). New Delhi: FOSMA Maritime Institute & Research Organisation.
  6. ↑ Rothbloom, A. Human Error and Marine Safety (pdf).
  7. ↑ Casey, S. "A Memento of Your Service". Set Phasers in Stun: and Other True Tales of Design, Technology, and Human Error.
  8. ↑ Mounter, Julian (29 March 1967). "Night Strafe On Blazing Tanker Tide puts out fire". The Times (56901). p. 1.
  9. ↑ "1967: Bombs rain down on Torrey Canyon". BBC News. 29 March 1967.
  10. ↑ Chouet headland quarry, Google Maps
  11. ↑ The Times, 4 April 1968
  12. ↑ "David Bellamy: I was shunned. They didn't want to hear". The Independent on Sunday. 13 January 2013. Retrieved 13 January 2013.
  13. ↑ "Surgeon Rear-Admiral Frank Golden - obituary". Daily Telegraph. 3 Apr 2014. Retrieved 4 April 2014.

Further reading

External links

Coordinates: 50°2.50′N 6°7.73′W / 50.04167°N 6.12883°W / 50.04167; -6.12883

This article is issued from Wikipedia - version of the Wednesday, April 20, 2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.