 Initially equipped with the Blackburn Ripon Mk.II, these were replaced in January 1935 with the Blackburn Baffin, which were in turn replaced by the Fairey Swordfish Mk.I in October 1936.In December 1938 the "Furious" was paid off, and the next year 811 Squadron was assigned to her sister ship .The squadron lost much of its personnel and all of its aircraft when "Courageous" was sunk by a U-boat on 17 September 1939, and the survivors of 811 and 812 squadrons were reformed into 815 Naval Air Squadron.