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The Ko-hyoteki-class midget submarine (also known as a Type A midget submarine) was designed by the Imperial Japanese Navy and built from 1941 to 1942 by Kure Naval Yard or Ourazaki Naval Yard. The site was added to the New South Wales State Heritage Register on 7 December 2007.
HA. 19 (also known as Japanese Midget Submarine "C" by the United States Navy) is a historic Imperial Japanese Navy Type A Kō-hyōteki-class midget submarine that was part of the Japanese Attack on Pearl Harbor on 7 December 1941.
Constructed between 1917 and 1920, Type F1 (F1型) (Ro-1-class) submarines were the first truly oceangoing Japanese submarines and the earliest to be rated as "second-class" or "medium" submarines. The Fiat-Laurenti-designed submarines had weak hulls, and they did not serve as the basis for future Japanese submarine classes. [13] Ro-1 ...
After the war 300 midget submarines of various types were found in various stockpiles in Japan. The submarines were fitted with 1300Ib warheads to be used in suicide attacks, they were intended to ram enemy ships in the event of a mainland invasion but were believed to have never been used. [7] Each submarine had a crew of two men.
The I-400-class submarine (伊四百型潜水艦, I-yon-hyaku-gata sensuikan) Imperial Japanese Navy (IJN) submarines were the largest submarines of World War II, with the first one completed just a little over a month before the end of the war.
I-70 was an Imperial Japanese Navy Kaidai-type cruiser submarine commissioned in 1935. While supporting the Japanese attack on Pearl Harbor at the beginning of the Pacific campaign of World War II in December 1941, she was sunk on the third day of the war, the first fleet submarine lost in the Pacific during the war.
The disaster has been the focus of considerable speculation that during the salvage and removal of the wrecks from West Loch, the U.S. Navy might have found the remains of a Japanese midget submarine, possibly the fifth Japanese midget submarine used in the Pearl Harbor attack in December 1941.
The Japanese submarine I-123 [9] found the area mined and spotted two American warships at anchor there, prompting a cancellation of the plan, despite the proposed use of Necker Island as an alternative refueling site. [4] This left the IJN unable to observe U.S. Navy activity or track the American carriers. [3]