example of the above is the Yokosuka D4Y1 which was mainly produced by Aichi. The D4Y1 and later models were also produced by the at Hiro. Aircraft Torpedo bomber Yokosuka Twin-engined Seaplane - 1916 biplane torpedo bomber; first Japanese twin-engine aircraft B3Y - -1933 biplane torpedo bomber B4Y - - 'Jean' 1936 biplane torpedo bomber Dive bomber D2Y - prototype dive bomber, lost to the Aichi D1A D3Y - or - 1945 two-seat dive bomber/trainer based on the Aichi D3A D4Y - - 'Judy' 1942 two-seat carrier-based dive bomber D5Y - - Kamikaze version of the D3Y Reconnaissance aircraft Yokosuka Nakajima Tractor - 1915 reconnaissance seaplane Ho-go Otsu-gata Seaplane - 1916 reconnaissance seaplane Ho-go Small Seaplane - 1917 reconnaissance seaplane Ro-go Ko-gata - 1918 reconnaissance floatplane D4Y1-C - - 1942 ship-based reconnaissance version of D4Y, produced by Aichi E1Y - - 1923 reconnaissance floatplane Tatsu-go Reconnaissance Seaplane - 1925 reconnaissance seaplane prototype 1-go Reconnaissance Seaplane - 1925 submarine-based reconnaissance seaplane E5Y - - 1930 reconnaissance floatplane E6Y - - 1933 submarine-based reconnaissance floatplane E14Y - - 'Glen' 1941 submarine-based reconnaissance floatplane R1Y - - prototype reconnaissance aircraft R2Y - - 1945 prototype reconnaissance aircraft Flying boat H5Y - - 'Cherry' 1939 maritime reconnaissance flying boat H7Y - 'Tillie' 1939 prototype flying boat Trainer I-go Ko-gata - 1920 seaplane trainer K1Y - - 1925 biplane trainer K2Y - - Japanese-built Avro 504 K4Y - - 1933 floatplane trainer K5Y - -'Willow' 1934 biplane trainer Transport L3Y - - Yokosuka-built transport version of Mitsubishi G3M Special purpose MXY1 - 1939 experimental parasol monoplane for aerodynamic research; built by Watanabe MXY2 MXY3 - experimental radio-controlled target glider (drone) MXY4 - experimental radio-controlled target aircraft (drone) MXY5 - transport glider MXY6 - unpowered gliders for development of the Kyushu J7W MXY7 - - 'Baka' 1945 rocket-powered kamikaze attack aircraft MXY8 - - training glider based on the Mitsubishi J8M; known as Ku-13 in IJA service MXY9 - - motorjet powered version of MXY-8 (project only) MXY10 - ground non-flying decoy of P1Y MXY11 - ground non-flying decoy of Mitsubishi G4M Bomber P1Y - 'Frances' 1944 twin-engine bomber - jet-powered version of the P1Y (project only) References Notes Bibliography Francillon, R.J. Japanese Aircraft of the Pacific War, Putnam, London, 1970, SBN 370 00033 1 Mikesh, Robert and Shorzoe Abe. Japanese Aircraft 1910–1941. London: Putnam, 1990. Yokosuka Imperial Japanese Navy Arsenals