Sunderland Mk.III: As Mk.II, with a revised hull bottom.
Sunderland Mk. IV/Seaford: Thoroughly revised Hercules-powered model with a new planing bottom and tail. Intended for use in the Pacific, the Seaford was flown for the first time in late August 1944. Defensive armament was to have been twin .50-cals in Martin tail and Bristol dorsal turrets, single weapons in beam mounts, and a pair of .303s in the nose. The eight production aircraft flew without the turrets, and these aircraft later became Solent airliners. It was later proposed to bring these back into military service with new ASW equipment to meet the R.2/48 requirement, but this was not carried out.
Sunderland Mk.V: Late war model with Pratt & Whitney Twin Wasp engines. 150 built new, with some Mk.III conversions
The Sunderland was to have a long postwar career, and turned out to be the RAF's last flying boat. The type went to war again in Korea, and against Malayan terrorists, but also brought supplies to Berlin, and supported expeditions into Greenland. France's
Aeronavale flew a pair of Mk 5s until 1962, with both examples ending up preserved in their country of origin, while the RNZAF kept a few Sunderlands active until the spring of 1967.
Bibliography:
Chris Bishop
The Encyclopedia of 20th Century Air Warfare, Aerospace Publishing, 2001 p.201 color profile of a No. 201 Squadron Sunderland Mk II
Jim Winchester
Classic Military Aircraft: The World's Fighting Aircraft 1914-1945 p.387: color profile of Sunderland MkIII NJ188
Bill Gunston
Aircraft of World War II ISBN 0-517-31680-3 p.188-191: color 5-view of Sunderland Mk.III W4004/RAAF, color profiles of the S.25 prototype, Mk.III W3999, SAAF and Aeronavale aircraft, and Solent M2269
Paul Eden, Soph Moeing
Aircraft Anatomy of World War II: Technical Drawing of Key Aircraft 1939-1945 p.250-253: Sunderland cutaway, flight deck photo, BOAC G-AGIA, color artwork showing MkII T9087 of No.201 Squadron
Gerry Manning
1000 Preserved Military Aircraft p.113 photos Sandringhams N814ML and F-OBIP
Photo: frontal view of a Sunderland out of the water
Flight March 29, 1945 p.340
Photo: line astern photo of two Sunderlands in flight
Flight 18 May 1956 p.629
Photo: Sunderland L2160 Selangor
Air Pictorial December 1962 p.381
Photo: Sunderland PP124/No 205 Squadron
Air Pictorial February 1966 p.61
Color profiles, including Sunderland I N9029, SAAF GR. Mk V 1703, RNZAF Sunderland III
Air International June 1982 p.302
John Stroud "Wings of Peace"
Aeroplane Monthly June 1989 development of the Short Scion & Senior - includes a Keith Woodcock painting of G-ACUV, photos of prototype G-ACJI with floats, G-AENX, G-ACUX, and G-ACUZ
Ken Robinson "Salute to the Sunderland, Conclusion"
Aeroplane Monthly May 1988 Includes a color cutaway illustration, photo of Sunderland V PP112
Roderick de Normann "Seletar Sunderlands"
FlyPast June 1998 p.32-34 No.230 Squadron operations - includes an in-flight photo of L5801
Len Thomson "Queen o' the Boats"
Model Aircraft Monthly January 2009 An in-depth look at building Airfix's 1/72 Sunderland kit.
Preview: 1/72 Sunderland Mk.I from Italeri
AIR Modeller January 2013 p.50
José Pires "Short's Sub Chaser"
Airfix Model World February 2016 Building the Italeri 1/72 Sunderland kit