Ahh! I saw one of these in 'We Dive at Dawn' and wondered what it was all about. That one was fitted with a radio, though I suspect that was a fiction, I can't see radios being left drifting in the channel, not to mention the power for them.

There were, infact, radios in them.
Check the link in the first post.
It has a good breakdown on the Udets.
:up:
But from my research, no downed flyer ever reached a Udet
to raise the flag or radio in.

It's a different story with the Cuckoo.
(British version of the Rescue Buoy)

This add-on was made for CFS3 so many years ago.
http://www.regshanger.com/Groundcrew...%20Pontoon.php