Re: FWD (TLCB) Re: NMD [Addendum]

From: John Calvin (
Date: Wed Jun 14 2000 - 19:56:48 MDT

On Wed, 14 Jun 2000 13:13:10 -0700 (PDT) Eugene Leitl <> wrote:
>John Calvin writes:
> >
> > Actually Mike, the SOSA system to which you refer is a passive
>system. It is only able to track things that make noise regardless of
>the chemical makeup. Active sonar, where being metal really makes a
>difference is in itself detectable, due to the fact that it must send
>out the sound signal (ping) and wait for the reflection. Now a
>magnetic detection system, which SOSA is not, would function as
>described in your above paragraph.
>Needs a nuke have a large magnetic field? I don't think so.

I'm not certain where you read that anything would require nukes to generate a magnetic field. Certainly not in my response to Mike above, the word nuke is not even mentioned. The simple fact is that anything with metal or electronics has a detectable magnetic field. Large seagoing vessels can have a Magnetic "Signature".

Using a
>liquid-filled blimp, one can create a buoy almost without any
>signature. The water is a good shield, so you can make the warhead
>very light.

Water is not all that good of a shield. FYI there are Magnetic mines that can be set to a specific signature type.

John Calvin
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