elcid, I have heard and it is my experience that if you have a strong radar contact for the 76 it will more or less be on target. The little blue boats going around in circles are not good returns for the fire control radar, so the solution for the gun is not good.
I think the CIWS uses a doppler radar or something, which is much more sensitive to fine movement. (not at all sure...)
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LW
 
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