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 submarines were double-hulled medium sized submarines. They were derived from the (KT or K5 type, "Ro-29"-class). Several variants existed. From 1934 to 1944, the (K6 type, "Ro-33"-class) and the (K7 type, "Ro-35"-class) were built. The K6 type was equipped with a 3.25 inch (80 mm) gun and Type 95 Long Lance torpedoes. Twenty units were built: , , "Ro-35", "Ro-36, Ro-37", "Ro-38", "Ro-39", "Ro-40", "Ro-41", "Ro-42", "Ro-43", "Ro-44", , "Ro-46", "Ro-47", "Ro-48", "Ro-49", "Ro-50", "Ro-55", "Ro-56".