found: Work cat.: The Vickers-Supermarine "Scapa" (British), 1936:p. 1, etc. (the Scapa; designed for observation, bombing, torpedo transport, and training and navigational instruction)
found: Virtual Aircraft Museum, Apr. 29, 2010:Aircraft directory: UK (Supermarine Scapa, 1932; all-metal reconnaissance flying boat developed from the Southampton; 14 built for the RAF, entering service in 1935; no mention of Vickers)
found: Wikipedia, Apr. 29, 2010:Supermarine Scapa article (flying boat used by RAF between 1935-1939; developed from the Southampton; no mention of Vickers)
found: Jane's Encyclopedia of Aviation, 1996(Supermarine Scapa (UK); all-metal reconnaissance flying-boat developed from the Southampton; 14 built for RAF; no mention of Vickers)