Top-secret wartime experiments were conducted off the coast of Auckland to perfect a tidal wave bomb, declassified files reveal. United States defence chiefs said that if the project had been completed before the end of the war it could have played a role as effective as that of the atom bomb. Details of the tsunami bomb, known as Project Seal, are contained in 53-year-old documents released by the Ministry of Foreign Affairs and Trade. Papers stamped top secret" show the US and British military were eager for Seal to be developed in the post-war years too. The experiments involved laying a pattern of explosives underwater to create a tsunami. It is unclear what happened to Project Seal once the final report was forwarded to Wellington Defence Headquarters late in the 1940s. The bomb was never tested on a full scale. "Whether it could ever be resurrected ... Under some circumstances I think it could be devastating."
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