Flying boat
A RAF Coastal Command Catalina, with Ensign Leonard B. Smith of the U.S. Navy as copilot, and flying out of Castle Archdale Flying boat base, Lower Lough Erne, Northern Ireland, located on 26 May 1941, some northwest of Brest, the German battleship "Bismarck", which was attempting to evade Royal Navy forces as she sought to join other Kriegsmarine forces in Brest. This sighting eventually led to the destruction of the German battleship.