It's actually the French seaplane base at at the 'Castle Emplacement', between the harbour and the model yacht pond in Guernsey. The latter was drained and the site used for a hangar and accomodation huts.
I know because I had that same pic prepared for this thread at some appropriate time in the future.
Your call Olympus.
Last edited by Duckbutt; 25th May 2012 at 16:20.