Three-year European project aims to safeguard shipwrecks
Nature, 23 January 2002, by JOHN WHITFIELD
Archaeologists across Europe are teaming up to preserve and manage shipwrecks and to share their secrets with the public.
The three-year project was launched with 1.2-million euro of European Union funding late last year. By 2004, participants plan to have a standard procedure for assessing wrecks and deciding whether they are at risk.
They hope to find out more about the pros and cons of raising ships, and to develop ways in which the public can pay virtual visits to wreck sites.
Research will focus on four wrecks in northern European waters. Two are in the Baltic Sea, one is in the North Sea off the Dutch coast, and the fourth lies in a Swedish lake. The ships range from a thirteenth-century sailing vessel to a paddle steamer that sank in 1856.
Instruments at the wrecks will monitor currents, salinity and other conditions. At the moment, "we know very little about the processes underwater", says marine archaeologist Carl Olof Cederlund of Soderton University College in Stockholm.
The scientists hope to work out why one ship lasts while another rots - the action of waves and bacteria are both known to be important. The data gathered will help to predict the fates of wrecks, and so help archaeologists decide how to preserve them. Nets draped over the wreck can trap a protective layer of silt, and sandbags can buffer wave damage.
The project will also explore ways to minimize the increasing human pressure on sites, as more people journey into the sea for leisure or in search of minerals and fossil fuel.
"We should try to develop virtual underwater museums," says Sallamaria Tikkanen of the Maritime Museum of Finland in Helsinki. These would allow Internet users to tour wreck sites.
By bringing the wrecks into sight, archaeologists hope to bring them into people's minds. "When the general public knows about the wrecks they feel they're part of our common heritage," says Tikkanen.
The EU project was initiated by Finnish researchers working on the wreck of the Vrouw Maria. This merchant vessel sank in 1771 en route from Amsterdam to St Petersburg, carrying a cargo of luxury items and artworks to Russian Empress Catherine the Great. It was rediscovered in 1999, under 41 metres of water off the Finnish coast.
By comparing the Vrouw Maria with other wrecks, the Finns hope to learn what might happen to it in the future, and can then decide whether they should raise it.
"We are willing to lift it if we have the money, but it would cost hundreds of millions of euros," says Tikkanen. And raising wrecks is "a bit old-fashioned", she adds.