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 ("Ro-60"-class) submarines ("Ro-60", "Ro-61", "Ro-62", "Ro-63", "Ro-64", "Ro-65", "Ro-66", "Ro-67", "Ro-68") were copies of the British submarine .