Two photos of one of the two Lough Erne based Catalina's involved in the finding of Bismarck, two of 12 "Cats" which FDR had given to the RAF along with some USN officers to convert and instruct RAF aircrew in the use and flying / operational characteristics of the "PBY". "Tuck" Smith and Lt. Johnston both became closely involved in this chase. (By the end of May 1941 two of these twelve aircraft had been lost operating from Lough Erne, one remains in the Lough, not far from Castle Archdale as a war grave.) Lt.Wagner another of the USN officers who came ( secretly) to Lough Erne, congress knew nothing about the officers nor the aircraft. P/240 Squadron, the Catalina which is a Wargrave and a memorial set up at the marina at Castle Archdale to remember the crew. On the left Hirst who is named on the memorial and on the left John Iverach who took the photographs, a Canadian navigator who took an extensive range of photos in his time at Lough Erne. Gaynor Williams pilot of the second Catalina involved in shadowing Bismarck, I am presently waiting for a copy of his book "The Wartime Journals of a Prarie Kid". ( Published in 2010). Williams was initially disappointed not to have been sent to Iceland with other aircrews to search for Bismarck but it would be he as part of two composite crews which would find the battleship. I have been searching for some aircrew logbook copies directly related to Bismarck will try and do better tomorrow. In the meantime her rudder. From "battleship Bismarck A design and Operational History".