I don't have the specific knowledge either. Just read a few wiki articles now and then and perhaps a few interesting websites. I can't say I have read much on this subject. Common sense and the inclination to ask questions is all it takes to be a worthwhile contributer as far as I'm concerned.
Unsurprisingly, after some further thought the plan appears to be sound. If subs can detect us from 20 miles away, from how far could we detect them?
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