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Film of the re-floating and the subsequent salvage operation of the Swedish warship Wasa which sank in Stockholm Harbour in 1628 and was not located until 1956.
Documentary film made in 1966 by the UK Shell Film Unit which has as its main theme, that of marine archeology. The delicate timbers of the ship posed a problem when returned to the surface as the salvage team feared they would disintegrate once the moisture evaporated. A solution was devised after some research to use a petroleum based product, polyethylene glycol to penetrate the cells of the timber. It was interesting to see how Shell's public relations side of the group could seize on a subject of public interest at the time and present it on film, with the underlying fact that part of the story was the help which Shell provided in the continued restoration of the ship with the use of one of its petroleum based products.
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