I was searching for some things about sound propagation is ocean when i stumbled upon this:
http://www.armscontrol.ru/subs/snf/snf03221.htm
and detection ranges:
http://www.armscontrol.ru/subs/snf/snf03222.htm
Very interesting things about how submarine creates noise and why u can hear some frequencies and why not...Great thing to see if u want to understand how this (DW) work!
LWAMI crew...er...guys i know that u maybe already know that but u can check also
plz post here what do u think about this info..Is it "too much scientific"

or u can really pull out something useful from this? :hmm: