The Escape of Bernd Boettger (2014)

Interesting read. Some nitpicking as a born East-German: In my opinion, the last row of images shows pretty standard UW-orienteering equipment, which has not much do with Boettgers scooter-like device. In particular, it has no engine parts, only air bottle + navigation (compass and distance counting meter)

https://en.wikipedia.org/wiki/Underwater_orienteering

I'm quite sure, because I was involved in this kind of sportive activity during the eighties and nineties of the last century and have build this and similar equipment myself.

I assume, from the context, those show Boettger in Spain before his tragic demise?

> those show Boettger in Spain

Not the left one - look at the three peoples physique. IIRC, the KSK participated in non-military competitions at the time. The image could show some of them. The second (and also the first) one shows a device design not seen before the eighties, I think.

For those interested in Cold War dynamics between East and West Germany, the autobiography of Markus Wolf is very good.

https://www.amazon.com/Man-Without-Face-Markus-Wolf/dp/18916...