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.
Submarines of the Imperial Japanese Navy
The or ("I-176"-class) submarines (, , , "I-179", , "I-181", "I-182", "I-183", "I-184", "I-185") were similar to the KD6 but with the torpedo tubes moved forward and a slightly improved operating depth.