I - 24

New South Wales,Australia

The Japanese mini submarines of the Kō-hyōteki class, participated in several attacks during second world war. They were carried on the deck of larger submarines, and launched for attacks when they arrived at the deisgnated targets. They had no names, and is often called the same as the submarines who carried them. One of these submarines were beached under the attack on Pearl Harbor in December 1941, and three were later sunk outside Australia. 31.May 1942 three of these submarines attacked Sydney harbour. Two were almost immediately sunk, but the third, the I - 24 managed to sink the Australian depot ship HMAS Kuttabul. What thereafter happened to her is uncertain. The wreck was found in November 2006 on a depth of 54 meter at Bungan Head outside Newport.

Former names:
I - 24

78,5 x 5,1 x 9,1 f
Tons: Built: Home Port:
46 displ
Kure ( JP ) 1942
( JP )

33°40′21″ S 151°22′58″ E

Picture: Japanese submarine, Pearl Harbor 1942
Kō-Hyōteki class
Courtesy of Naval History

Built: Kure or Ourazaki Naval yard; Kō-hyōteki class submarine
101 of this class were built, 2 men crew. 2 x 450mm torpedoes
as armament. Transported on the deck of larger Japanese
submarines, therefore mostly named after those submarines