The United States and New Zealand conducted secret tests of a "tsunami bomb" designed to destroy coastal cities by using underwater blasts to trigger massive tidal waves.

The tests were carried out in waters around New Caledonia and Auckland during the Second World War and showed that the weapon was feasible and a series of 10 large offshore blasts could potentially create a 33-foot tsunami capable of inundating a small city.

The top secret operation, code-named "Project Seal", tested the doomsday device as a possible rival to the nuclear bomb.

http://www.telegraph.co.uk/news/worldnews/australiaandthepacific/newzealand/9774217/Tsunami-bomb-tested-off-New-Zealand-coast.html

A rival to the nuclear bomb? How different things might have turned out if Japan was attacked with tsunamis instead of the Atomic Bomb? The bomb would have been used once at least at sometime...maybe in the Korean War? Or on Moscow before that?

A tsunami in Red Square?

Not really credible.

Wait until the Kiwis use it in Darling Harbour.

A tsunami in Red Square?

Not really credible.

Wait until the Kiwis use it in Darling Harbour.

No, I mean if a tsunami bomb had been used in 1945 instead of the atomic bomb, and Japan surrendered...when would the atomic bomb have first been used?

A tsunami in Red Square?

Not really credible.

Wait until the Kiwis use it in Darling Harbour.

No, I mean if a tsunami bomb had been used in 1945 instead of the atomic bomb, and Japan surrendered...when would the atomic bomb have first been used?

Planting 5000 tonnes of HE in a line 8kms off the Japanese coast in 1945 probably hints that the "tsunami bomb" was another quarter-baked idea unlikely to ever see the light of day...

And let's not encourage a HAARP tinfoil conversation!

A tsunami in Red Square?

Not really credible.

Wait until the Kiwis use it in Darling Harbour.

No, I mean if a tsunami bomb had been used in 1945 instead of the atomic bomb, and Japan surrendered...when would the atomic bomb have first been used?

Would Japan have surrendered? Tsunami are natural occurances in that part of the world - maybe serious ones are not at all frequent, but the effects could be explained. I would suggest that such a weapon would not compel surrender.

As to where the weapon would have been used, had it not been used in 1945 - I would suggest PyongYang, when the South Korean/US troops were driven into the enclave around Pusan, before the rest of the world joined the Korean War. It would have been a salutory lesson to Chairman Mao and the very recently victorious Peoples Army.

If the A-Bomb had not been used against Japan would the Russians and Chinese have used so many agents to try to get the secrets from the US? Would it not have been considered as a possible weapon that was not yet operational?