See the chart I posted when I stuck my neck out months ago. It's way back up the thread.
I believe they are going on the secret report Detmers tried to get to Germany while he was a prisoner. I see no reason to doubt its truth, but of course it's subject to the limitations of the navigation of the period.
I'm looking forward to crowing, or hanging my head in shame!
I noticed the 4th March report didn't elaborate at all (deliberately?) on the "interesting target" used to test the towed equipment. Any known "interesting" targets around where the Geosounder was on the 4th ?
If the wreck really is Kormoran, the location given calls into question Detmers' entire story of the action. The position is to the east of the point where he said he sighted Sydney and then fled SW. Something is fishy.
That said, this is a remarkable discovery if the findings actually hold up. The sonar imagry is nice, but has anyone actually gone down there to eyeball the wrecks and find something unmistakable to confirm it? A name on the stern would be pretty cut and dried.