10-02-13, 01:03 AM
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#5
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Silent Hunter 
Join Date: Sep 2010
Posts: 3,975
Downloads: 153
Uploads: 11
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From reading Blair, I've gotten the impression that the Ultra messages were not all that worthwhile (at least tactically). Even where the information was timely and accurate, it was easy to miss an intercept.
I think the information was more useful strategically; that is it provided an overall picture of IJ shipping, but didn't necessarily help that much in allowing individual subs to torpedo targets.
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