The breakwater that proved so inadequate to the task of protecting the Fukushima No. 1 nuclear plant from the ocean was 10 meters high. The one defending the Onagawa nuclear plant is 14.8 meters tall, and it turns out Hirai had to fight a one-man war to get it built. The reason he was so determined was his careful study of the past, which revealed that in the year 869 a massive tsunami had hit the spot where the Onagawa plant now stands.
via Onagawa nuke plant saved from tsunami by one man’s strength, determination – The Mainichi Daily News.