One of The Imperial Japanese Navys most reliable and deployed Combat Submarines, The Type "C" replace The "A" and "B" Classes (although they were still used in a limited capacity). They were built between 1937 and 1944. The "C" Type was 400-feet long and displaced 3,000-tons. These Submarines were typically powered by 10-Diesel Powered Engines, giving them a maximum surface speed of 50-mph. The "C" Type could cruise underwater at 44-mph. Their maximum rated operational depth was 330-feet. Armament included (8) 21-inch Torpedoes and a 5.5-inch Deck Gun for Surface defense. Due to their size, some were used as "Kaiken" ("Mothership"). In this role, they could carry various models of retractable wing, Reconnaissance "Float Planes". Able to crew up to 200 men, very few of The "C" Type Submarines survived The War.