Regarding identifying the bodies found on the bridge, the following is an excerpt from chapter 4.4.1 in the Rockwater survey report, available here:
https://sok.riksarkivet.se/bildvisning/ES001310_00015#?cv=14&xywh=-3210,-1,8934,3498 (Registration needed).
My conclusions - identifying the bodies found on the bridge could have been challenging. (And as we know, that was not part of the mission for the dives.)
CONTENT WARNING - DISTURBING MATERIAL. I've put the text in a spoiler since the description is disturbing.
(Any errors in the text are probably mine...)