ZackWester mentioned this right here: https://imgur.com/gallery/KXfPSaY/comment/2292539061
Imgur ate the remainder of my put up and ate the half about ZackWester when I updated it.
I had a total put up with diverse photos and a summary of
https://interestingengineering.com/innovation/uncovering-i-400-eastern-submarine-plane-carriers-ww2
Right here is the description I summarized from that article:
Admiral Yamamoto got right here up with the premise and Captain Kameto Kuroshima become tasked with a feasibility peep, done it in 1942, “and the Japanese Like a flash Headquarters permitted it quickly in a while. His proposal become to safe 18 of these ships with the capability of making three round trips to the west fly of the US without the necessity to refuel, or one round time out to wherever on this planet. No longer fully that, the vessels well-known in yelp to lift no less than two attack planes armed with either torpedoes or bombs. Overall plans were done the an identical year.”
When Yamamoto become killed the conception become reduced to 5, but fully 3 were done, and fully 2 entered carrier.
“Each of these impressive machines become powered by four 1,680 kW engines. They even had sufficient fuel to walk around the sphere one and a half occasions. They measured 120 meters in size and displaced round 5,900 tons, which become extra than double that of their American counterparts. Their flawed half become a honest appropriate resolve of eight configuration, owing to the stay plane hangar. This provided the well-known energy and steadiness to hold sufficient money the ship of coping with the additional weight of the hangar and now not assemble them top heavy. The plane hangar become correct under the conning tower and mounted alongside the ship’s centerline.
“This plane hangar become, obviously, water tight and cylindrical in safe. Its outer derive admission to door become opened hydraulically internally or manually from the skin. It had a 51 mm thick rubber gasket.
“No longer fully did the ship hold aerial strike capabilities but become furthermore geared up with a pair of of the major guns ever seen on a submarine. She become geared up with three waterproofed Form 96 triple mount 25mm anti-plane defense guns and a single Form 11 140mm deck gun aft of the hangar!
“The vessel, being a submarine, become furthermore geared up with 8 torpedo tubes mounted at the bow and not using a aft tubes.”
“No longer fully would possibly perchance presumably furthermore the [Seiran fighters’] wings be folded support but furthermore the stay segment of the vertical tail stabilizer and total horizontal stabilizers. The particularly designed fighter’s pontoons were furthermore detachable and stored in separate compartments on either facet of the hangar.”
“Fighters were launched from a 26-meter forward deck mounted compressed air catapult at the bow of the ship. The opponents were recovered the exhaust of a storable collapsible crane. Underneath the music, four excessive-stress air flasks were linked in parallel to give sufficient `thrust’ to originate the opponents to takeoff bustle.
“Proper through fighter deployment, hasty originate of opponents become a necessity. As older WW2 opponents in most cases required a whereas to heat up, particularly designed oil pre-heaters were employed to derive the engines as much as operational temperature as quickly as that it is in all probability you’ll presumably be ready to imagine. This become furthermore well-known because it is in all probability you’ll presumably now not hold engines ticking over when submerged, you can correct execute the crew!”
All three boats were “captured by the U.S. Navy and they either sunk I-400 and I-401 as target notice in 1946 or converted to tanker submarine, I-402. I-402 become later sunk in 1946 of the Goto Islands by the U.S. Navy.”