Japanese investigation at Taranto

Did Japanese officers visit Taranto after the raid?

Yes. The Japanese naval attaché visited and carried out extensive research into the attack.

The Japanese naval attaché visited Taranto and conducted extensive research. The visit gave Japanese officers direct access to the physical and operational aftermath of a successful harbour strike. Japanese planning for Pearl Harbor was already underway, so Taranto was evidence rather than the plan's origin. The investigation shows how navies study foreign combat experience to test and refine ideas of their own.