Submarines of the Imperial Japanese Navy
The ("I-15"-class) submarines (, , , , , , , , , , , , , , , , , , , ) were the most numerous type of submarines of the Imperial Japanese Navy during World War II. In total 20 were made, starting with "I-15", the class ship. These were fast, very long ranged, and carried a single Yokosuka E14Y seaplane, located in a hangar in front of the conning tower, launched by a catapult.
Japanese submarine I-22 (1938)
The boats were armed with eight internal bow torpedo tubes and carried a total of 20 torpedoes. They were also armed with a single /40 deck gun and two single or twin mounts for Type 96 anti-aircraft guns. They were equipped to carry one Type A midget submarine aft of the conning tower.
"I-22" was commissioned at Yokosuka, Japan on March 10, 1941. The submarine participated in the attack on Pearl Harbor, the Battle of the Coral Sea, and the attack on Sydney Harbour in May and June 1942. "I-22" disappeared while on patrol near Malaita in the Solomon Islands on or around October 4, 1942 and was presumed lost with all 100 hands.