Japanese sub chaser
Dai 13 Go-gata Kusentei of the Imperial Japanese Navy.Built from 1939-44.Served from 1940>1956.77 planned,49 completed,35 lost.Had 1 76,2mm L/40 AAgun and 2 13MM AAguns and about 36 depht charges
http://www.ww2incolor.com/japan/Type+13+sub+chaser.html
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I was flipping through some books and I stumbled across a air-to-surface missle called the Igo. Mitsubishi's radio controlled Igo-1-A was powered by a rocket motor producing 240kg (530Ib) of thrust for 75 seconds and was planned to be slung underneath a Ki-67 bomber (another Mitsubishi craft). This picture was taken before it flight trials in the autumn of 1944. The war ended before the Igo-1-A was deployed in military operations. The Igo-1-B was a design produced under Kawasaki. It too was radio controlled and its transport was a modified Ki-48-II (Kawasaki). The missle had a rocket motor generatin 150kg (330Ib) of thrust for 80 seconds. it was planned to use a Kawasaki Ki-102b aircraft as it launch-platform. 180 missles were made but none saw service. The Igo-I-C was designed by Tokyo Imperial University's Aeronautical Institute and used an acuostic seeker to home in on the noise of a warships' guns. Trials in 1945 are thought to be successful. The design came too late to be mass produced.
http://www.ww2incolor.com/japan/?g2_page=3
The Kasagi was built by Mitsubishi (Nagasaki), launched in November,1944 and was never completed.It was planned to be 745 feet long overall, have a full load displacement of 22,500 tons and carry 64 aircraft.
http://www.ww2incolor.com/japan/20100701.html

shokaku