En metod för upptagning av fragmentariska båtdelar

Carlsson, A., Nordeman, K., Teir, L. & Varenius, B. 1981. En metod for upptagning av fragmentarisk a batdelar. (A method for the recovery of frag­ mentary ship parts.) Fornvannen 76. Stockholm, In the exeavation at Helgeandsholm en in Stockholm 1978—1981 eleven Me­ dieval and later ships were found. Since the waterlogged wood was in a very poor condition in some cases new methods for the recovery had to be devised. Methods using plaster of Paris and silicon rubber were tested and for several reasons rejected in favour of one- and two-compound polyurathane foams. Two-compound foam hardens quickly but is more unhealthy to handle than the one-compound type, wich is therefore to be prefered.