The Japanese transported five midget submarines for the attack aboard I-type submarines.Deployed the night before the air attack from seven miles away, these craft made for the mouth of Pearl Harbor.

A Japanese Type A mini-submarine on an eastern Oahu beach after it was found on December 8, 1941. US Naval History and Heritage Command 2021-12-07T14:16:49Z Share ...

The United States realized early on that victory depended on disrupting Japan’s shipping. U.S. submarines played a critical role in sinking 1,113 Japanese merchant ships and 201 warships, ...