Artifacts
The wreckage of I-401 was discovered by the Pisces deep-sea submarines of the Hawaii Undersea Research Laboratory in March 2005 at a depth of 820 meters.
A restored Seiran airplane is displayed at the National Air and Space Museum in Washington, D.C.. It is the only surviving example of this aircraft, and was found at the Aichi Aircraft Factory following the end of the war in August 1945. Shipped to the Naval Air Station at Alameda California, it was left on outdoor display until 1962, when it was transferred to the Paul E. Garber Facility in Silver Hill, Maryland. There it remained in storage until 1989, when a comprehensive restoration effort was mounted. Though the plane had been ravaged by weather and souvenir collectors, and original factory drawings were lacking, the restoration team was able to reconstruct it accurately, and by February 2000 it was ready for display.
Read more about this topic: I-400 Class Submarine