Evidence of an explosion......
Just saw a documentary on the History International channel, ( US), in which divers in 2000 ignored all kinds of Swedish Gov't harassment & dove on the site...They showed video of the metal on the ship's hull bent outward from an obvious internal explosion.....They mentioned that the Swedish Gov tried to encase the whole wreakage in concrete until public pressure forced them to stop...They mentioned that covering wreakage in concrete is often what's done when it is radioactive, like the reactor at Chernoble & the wreakage of a sunken Soviet nuke sub...
Noticed that most of the reviews on this site which slam this movie are from folks in Sweden & Finland, nations directly involved in suppressing further inquiry on the sinking....Hmmmm