Submarines of the Imperial Japanese Navy
The submarines that Electric Boat sold to Japan were based on the Holland designs, known as Holland Type VIIs similar to the American s. The five imported Hollands were originally built at Fore River Ship and Engine Company in Quincy, Massachusetts under Busch's direction for the Electric Boat Company back in August–October 1904. They were shipped by freighter from Seattle, Washington in Knock-down kit form to Japan, and then reassembled by Arthur Leopold Busch at the Yokosuka Naval Arsenal, which was then Japan's largest naval shipyard, to become Hulls No. 1 through 5 and were designated Type 1 submarines by the Japanese Navy.
Submarines of the Imperial Japanese Navy
Only six submarines attempted this trans-oceanic voyage during World War II: (mid-June to August 1942), (June 1943), (October 1943), (November 1943), and German submarines (August 1943) and (December 1944). Of these, "I-30" was partially successful but was later sunk by a mine, "I-8" completed her mission, "I-34" was sunk by British submarine , and "I-29" by the United States submarine, (assisted by Ultra intelligence). made the final attempt.