Copper Galt Project

"This webpage details an ongoing project in lake Stora Aspan, Sweden. According to local legend, the nearby villagers of Skog, who participated in the local copper mining industry, had created a massive copper ingot or "Galt" which was lost to the depths when transported over the frozen surface of the lake in the late 17th century." Небольшая информационная страничка.

Sture Hultqvist's Sonar Project

"Sture Hultquist, from Uppsala, Sweden, has built his own side-scan sonar system and this webpage documents his field tests and wreck discoveries. The page includes some detailed sonar images, generated from 1996 to the present, of a variety of shipwrecks in Swedish waters and elsewhere." Исследования с 1996 г., родственные ресурсы.