The Sulphur Threat To The 17th Century Warship Vasa
Author(s)
I. Hall Roth & L. Dal
Abstract
The sulphur threat to the 17'~ century warship
Vasa
I. Hall Roth & L. Dal
National Maritime Museums, Sweden
Abstract
The royal warship Vasa sank on her maiden voyage in 1628. She was discovered
in 1956 and in 1961, after 333 years at the bottom of the sea in the Stockholm
harbour she was salvaged. Vasa, built mainly of oak, was one of the first major
objects to be conserved with polyethylene glycol. She was sprayed continuously
for 17 years followed by an 11 year long controlled drying procedure (HBfors,
[I]). In 1990 the new Vasa museum opened and is now the most visited museum
in Scandinavia with about 750 000 visitors each year.
The summer of 2000 was unusually wet and in July, yellow-white precipitate
was discovered on wooden surfaces on objects kept in the storage, in showcases
and later on the ship itself. An international seminar was held in February 2001
and as a result a research programme was launched that involves scientists from
Australia, Canada and Sweden.
Surface as well as cor
Keywords
Related Book
Other papers in this volume
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