Japanese submarine Yu 7
Yu 7 was an Imperial Japanese Army transport submarine of the Yu I type, built by Hitachi Kasado Works in Kudamatsu, Japan. It was designed to carry supplies or troops to Japan’s island garrisons and did not carry torpedoes. Yu 7 had a surfaced displacement of about 274 long tons and 346 long tons submerged, was 41.4 meters long, 3.9 meters wide, and had a drafts of 3.0 meters. It used two Hesselman engines on the surface and an electric motor when submerged, with a single propeller shaft. Top speeds were 10 knots on the surface and 4 knots underwater; it could travel 1,500 nautical miles at 8 knots when surfaced, or 32 nautical miles at 4 knots submerged. The submarine could carry 24 tons of freight or 40 troops and was armed with one 37 mm Type 4 gun and five Type 99 light machine guns. Yu 7 served in Japanese home waters, joining Detachment 2 of the Transport Submarine Group in November 1944, and conducted missions from Shimoda and Mishima to nearby islands in 1945. The war ended on August 15, 1945; Yu 7 surrendered to the Allies and was later scuttled or scrapped.
This page was last edited on 3 February 2026, at 14:08 (CET).