Allan
I would have to say no since B11 was apparently not completed until June 21. I believe that he was flying in a Northeasterly direction from B3 and hit the beachhead here which would probably be to the East of B11:
http://www.flickr.com/photos/2455401...7609636214338/
There appear to be some batteries in the above linked photo. I also have additional photos of this mission which have not yet been scanned.
All the best
Scott Blyth