Ladas wrote:
It seems to my limited recollection, that the modern tactic for a torpedo is not to penetrate the hull, as in WW2, but to detonate directly under the ship and break the keel, sinking the ship. Again, based upon poor research, I recall that with modern, conventional torpedoes, the detonation has to be relatively close (few hundred feet) to be effective against modern structural framing.
I think the detonation is actually closer than that and yes, you do want to get it under the keel. In WWII I believe they tried to do this with magnetic detonators with varying degrees of success.
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I was curious at what range a modern nuclear warhead would need to detonate to cause the same keel breaking shockwave, and the potential effects it might have on ships at the ranges you mentioned typical for our modern groups.
That depends entirely on the size of the arhead and the water conditions.. and of course on how the ship is built.
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Reading that article you linked (thanks btw, very interesting), made me also wonder about the effects of a shallow water detonation by one of the 200 KT warheads that China has for their cruise missiles (10x the Baker test).
Again, depends a lot on the distance from the ships of the detonation, and the water conditions. I ahve not been able to find an explosion effects calculator for underwater explosions.
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What is the effect on ship based radar of a radioactive cloud with heavy water content 3+ miles across?
That would depend a lot on the direction and distance of the cloud. I don't know of any direct effect that radioactivity has on radar after the explosion. EMP from the explosion could damage the radar, but that would not be a factor of the cloud.
I also don't imagine the cloud would remain in the air very long with a heavy water content; most of the water would fall back down.
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Perhaps this is all fantasy, but using your diagram, if the screening destroyer has a nuclear cruise missile (of the anti-submarine variety) or torpedo detonate under neath or in promixity, its probably going to sink the ship, either by breaking the ship, or sinking it due to loss of buoyancy (interesting side effect from the deeper water explosion). What secondary effects are of the most concern to the remaining ships, obviously other than losing a screening destroyer. Will the high density cloud render their radar blind to that area? Will the sub-surface shockwaves/noise destroy their SONAR? etc.
The noise could very well have serious effects on the sonar
operators if they have their headphones on. The sonar itself I imagine has some sort of protection from sudden noise spikes built in, precisely in case of such an event. I doubt the details would be publicly available.
I think EMP would be the most serious secondary effect, and possibly the radioactive effects on the crew. I don't think a cloud of water will really create that much of a "blind spot" if any; the sky is really big, and the ships are usually far enough apart that a big cloud won't occupy a huge percentage of it.
Remember also that if this big cloud suddenly blinded them, any additional enemy missiles, ships, airplanes, etc. on the other side now can't see them, either.