The following quote is from the article "Extreme Waves" is stated by Mark confides in www.zagle.com.pl
two-week observation of ocean surface by satellite ERS-2 SAR revealed that a period of 25 waves with a height exceeding 29.8 m . Practically, this means that somewhere on the globe every day waiting such a giant and it's not only in the Southern Ocean. Such waves are everywhere, and even the Baltic is not free of them, although the magnitude of the phenomenon here is a bit smaller.
In a relatively short measurement period documented a wave of near ośmiometrową. Finally, after a major accident a passenger ship Bremen, who had experienced nearly 30-meter wave, no one in their existence is no longer doubted. Another wave was so documented. Wave of the New Year January 1, 1995 (video below), which destroyed the North Sea oil platform. She had a height of 25 m. Another wave, also in the North Sea on 13 December 1991, had a height of 28.3 m. The average wave height of about 5 m from the sea could happen to a wave of up to 20 m.
causes of such large waves is more . This may be the concentration waves of different frequencies, the interaction between long sequences of each wave and finally the interaction between waves and current, as is the coast of South Africa in the Agulhas Current region. There is a known phenomenon of the Three Sisters, a sequence of three giant waves that occur one after another. This phenomenon can occur when waves are superimposed on the other wave at an angle of about 30 degrees. If high, breaking the wave enters at an angle of 50 degrees to the main direction of the waves can be created "a wave of bandit" and is the most scientific term. Most likely, such a steep shaft refracting the water encountered in the Atlantic, the German container ship "Munich."
Studies on the waves resulted in upgrading design standards for ships and platforms. According to the so-called amended. Convention on the free side of the nose shapes were changed and the minimum height of the sides. The revised design was also decks, above all, increased and more secure were gaps and deck cargo is better protected against flooding. In the construction of platforms in the North Sea to the highest height of the expected wave of 1935-1940 m.
Currently the safety of navigation attaches much greater importance, particularly for oil tankers and ships carrying dangerous goods. Other extreme waves are waves of the tsunami. These waves are called tectonic crustal movements and volcanic eruptions, and their destructive power manifests itself not on the high seas, and on the coasts, where wave stacking up destroying everything it encounters in its path. An example might be bożenarodzeniowa disaster a few years in Indonesia and the Indian Ocean islands.
Another reason may be the wave of the tsunami hitting the asteroid (meteorite), which in Earth's history is the widely documented. Falling asteroids, warmed by the friction of the atmosphere to a temperature of several thousand degrees results in contact with the ocean steam explosion comparable to the atomic bomb. No wonder that both the Russians and Americans have conducted research on the spread of waves caused by the explosion and its altitude. Although an asteroid crash is very unlikely, however, astronomers have found 1950DA object with a diameter of 1.1 km, which is driving at speeds over 17 km / s to hit the Atlantic coasts of Europe, causing a wave of Africa and the height of several meters. We already know the date of the event: 16 March 2880 year. So we can sleep peacefully.
How to give other media, every year 39,000 commercial vessels circulates around the world seas, about 200 of them will not return to port, and 20 disappear without a trace.
In the past 20 years has gone to the bottom of more than 200 large units, tankers, container ships with the hull more than 200 m. Probably the unpredictable waves caused so many of these katastrof.I for example: 27 July 1909 South Africa disappeared flowing luxurious passenger ship of 211 Waratah pokładzie.Płynął people on the Durban to Cape Town, it was only the second cruise liner proud. The wreck was not found at all. It was the most famous maritime disaster up to the tragedy of the Titanic three years later. Presumably, the wave pushed overloaded cargo ship into the depths. Waratah had no radio equipment on board, could not therefore call for help. In 1976 an oil tanker Cretan Star managed to give over the radio: "The ship was struck by a powerful wave that passed through the board ...". The only trace that remained after it was czteromilowy oil spill near Mumbai. In 1980 he lost in the Pacific 300-foot Japanese freighter Derbyshire with the entire 44-man crew. At a depth of 9 thousand. m bathyscaphe found the wreck. The ship lay shattered, with torn overboard. Such damage could have made the explosion of 17 tons of TNT or a blow dammed for more than 30 m above the sea. December 12, 1978, the SOS signal gave Munich the German container ship with 28 people on board, located north of the Azores. After the rescue operation, which was attended by 110 vessels and 13 aircraft, found only a few floating containers, and empty lifeboats. The boat was suspended 20 meters above the water and possibly a rope was broken by a giant wave that destroyed the 211-foot ship and its crew.
The following video was filmed on January 1 1995, the Eagle when the 25-meter long water wall collapsed suddenly on the drilling platform Draupner Sea Północnym.Fale managed to accurately measure with a laser camera.
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