It called for 18 large submarines capable of making three round-trips to the west coast of the United States without refueling or one round-trip to any point on the globe. They also had to be able to store and launch at least two attack aircraft armed with one …

I-400 (伊号第四百潜水艦, I-gō-dai yon-hyaku-sensuikan) was an Imperial Japanese Navy Sentoku -type (or I-400 -class) submarine commissioned in 1944 for service in World War II.

These vessels constituted the largest subs ever built at the time, and were heavily studied (and subsequently destroyed) by US forces after the war’s conclusion. This case study looks at the system architecture utilized by the Japanese Navy to construct such a sub.

Apr 21, 2010 · Historians in the film’s "War Room" explore the secrets of Japan's secret I-400 aircraft-carrying submarine. From left to right: Eric Grove, Carl Boyd, Osamu Tagaya. Animated rendering of an...

Dec 12, 2013 · One of the more unique submarines of the past century—part aircraft carrier, part submarine—she inspired books, television documentaries, and a years-long quest to find exactly where it had come to rest in a postwar weapons test designed to keep it from Soviet eyes.

Powered by the 1,400hp Atsuta 32 engine (similar to Germany's DB601) they had a top speed of 295mph and were credited with a range of 642 nautical miles. The Sen Toku submarines carried four aerial torpedoes, three 800kg bombs, and twelve 250kg bombs to arm these aircraft.

Jun 4, 2020 · A World War II-era Imperial Japanese Navy mega-submarine, the I-400, lost since 1946 when it was intentionally scuttled by U.S. forces after its capture, has been discovered in more than 2,300 feet of water off the southwest coast of Oʻahu.

Sen-Toku class I-400 is laid down as the largest submarine class in the world. The class will carry three two-seat Aichi M6A1 "Seiran" (Mountain Haze) float torpedo-bombers capable of carrying either 1,764 lbs. of bombs or a 45 cm. (17.7-inch) torpedo …

May 17, 2011 · Japanese Naval General Staff approved the plans for what was to become the I-400-class submarine design. These would be submarine aircraft carriers conceived to carry out long-range aerial attacks on targets such as the Panama Canal and the continental United States. An order for the construction of 18 examples would be issued within weeks.

Sep 2, 2014 · Great picture but it's not an I-400 it's a Type I-15 or as it's referred to in the picture itself on the top left : Type B1. http://en.wikipedia.org/wiki/Type_B1_submarine. The aircraft shown in the hanger is incorrect, it has what looks like a Mitsubishi A6M when the I-400 carried the Aichi M6A. ah yes the aircraft carrier submarine the sucks ass.