The Portuguese Air Force has spotted an oil slick in the ocean between northern Portugal and Spain, almost certainly caused by an oil tanker skipper ordering that his ship's tanks be washed out at sea.
The pollution was logged as "covering the same area as 126 soccer pitches" and was detected to the northwest of Portugal, although it is located mainly in Spanish territorial waters.
Air Force spokesman, the intrepid Colonel Rui Roque, explained that there is no risk of the pollution reaching the coastal zones of either of the two countries but that the oil slick was moving towards the north of Spain due to the prevailing sea currents.
The Portuguese Air Force and Navy had received an alert and sent an aircraft specially equipped with marine pollution sensors. The Navy's analysis concluded that the pollution “was a rather dense hydrocarbon, probably caused by an oil tanker washing out its tanks.”
Such occurrences are relatively common, with the Navy and Air force logging incidents and advising whether the pollution is anywhere near the coastline. If not, the oil is left to disperse out at sea in the hope that nobody much notices or cares about any damage caused to marine life.
The public are alert to oil spills after January's palm oil spillage along the shores of the Ria Formosa islands received national media attention not only due to the pollution but also the government’s need for volunteers to clear up the mess despite this being an incident serious enough to have required State agencies’ specialist personnel to handled the clean-up operation.
The captain of the Port of Olhão investigated the palm oil case but has not found which skipper was responsible for washing out his tanks off the Algarve’s coastline, or whether the action was intentional or accidential.
For an aerial video of the oil pollution, see: https://youtu.be/bLgxrTmIYko
Portugal's biggest case of oil pollution: The Prestige, 2002.
The Prestige was a Greek-operated, single-hulled oil tanker, officially registered in the Bahamas, but with a Liberian-registered single-purpose corporation as the owner.
The ship had a deadweight tonnage, or carrying capacity, of approximately 81,000 tons, a measurement that put it at the small end of the Aframax class of tankers, smaller than most carriers of crude oil but larger than most carriers of refined products.
On November 13, 2002, while the Prestige was carrying 77,000 metric tons of cargo of two different grades of heavy fuel oil, one of its twelve tanks burst during a storm off Galicia, in northwestern Spain. Fearing that the ship would sink, the captain called for help from Spanish rescue workers, with the expectation that the vessel would be brought into harbour. The French, Spanish and Portuguese governments refused to allow the Prestige to dock in their ports.
However, pressure from local authorities forced the captain to steer the embattled ship away from the coast and head northwest. Reportedly after pressure from the French government, the vessel was once again forced to change its course and head south into Portuguese waters in order to avoid endangering France's southern coast.
Fearing for its own shores, the Portuguese authorities promptly ordered its navy to intercept the ailing vessel and prevent it from approaching further.
With the French, Spanish and Portuguese governments refusing to allow the ship to dock in their ports, the integrity of the single-hulled oil tanker quickly deteriorated and soon the storm took its toll when it was reported that a 40-foot (12 metre) section of the starboard hull had broken off, releasing a substantial amount of oil.
At around 8:00 a.m. on November 19, the ship split in half. It sank the same afternoon, releasing over 20 million US gallons (76,000 m3) of oil into the sea. The oil tanker was reported to be about 250 kilometres from the Spanish coast at that time. An earlier oil slick had already reached the coast.
The Greek captain of the Prestige, Apostolos Mangouras, was taken into custody, accused of not cooperating with salvage crews and of harming the environment.
After the sinking, the wreck continued leaking oil. It leaked approximately 125 tons of oil a day, polluting the seabed and contaminating the coastline, especially along the territory of Galicia. The affected area is not only a very important ecological region, supporting coral reefs and many species of sharks and birds, but it also supports the fishing industry.
The heavy coastal pollution forced the region's government to suspend offshore fishing for six months.
Guilty verdicts over devasating oil spill in Portugal (Jan 2016)
The Supreme Court in Spain handed down verdicts of “gross negligence” for the captain, the British insurer, and the owner of the of the Prestige* tanker which sank in 2002. The vessel went down after being damaged, adrift for six days and then breaking in half. That sent 63,000 tonnes of oil into the sea and eventually onto nearly 3,000 kms of shoreline in Portugal, Spain and France.
It was one of Europe’s worse environmental disasters, with massive damage to wildlife, the environment and to the fishing industry.
The Supreme Court ruling reverses that of a lower court which earlier had acquitted Captain Apostolos Mangouras. Now he has a two year prison sentence. The court also ruled that both the insurer London P&I Club and the owner Mare Shipping Inc were liable for the disaster.
The London P&I Club could be liable for up to $1 billion (€920 million), though no sum has yet been decided.
For those that still imagine nothing like this could ever will happen off the Algarve or Alentejo coastline, most of the shipping to and from the Mediterranean to northern Europe passes by, including ships carrying crude oil cargos, 200 million tons of oil a year at a conservative estimate.
