Submarine Hunt

Steve	Posted 2017-10-20 9:39 AM (#86401)
Senior Crew Posts: 106 Location: Santa Fe, NM	Subject: Submarine Hunt https://www.msn.com/en-us/news/world/a-russian-ghost-submarine-its-us-pursuers-and-a-deadly-new-cold-war/ar-AAtLTc1?li=BBnb7Kz
Ric	Posted 2017-10-20 10:34 AM (#86402 - in reply to #86401)
Plankowner Posts: 9165 Location: Upper lefthand corner of the map.	Subject: RE: Submarine Hunt That is what we were doing 50 years ago.
rover177	Posted 2017-10-21 1:50 PM (#86412 - in reply to #86401)
Master and Commander Posts: 1576 Location: Wollongong, NSW	Subject: RE: Submarine Hunt Nothing has changed. Any modern non-nuclear propelled submarine is hard to find when not running main engines. Sound waves can have interesting travel patterns. Sea-Water Temperature changes can result in large virtually not forecastable shadow zones. Yes they will be there but exactly where? Only local presence can show - for that given time and depth.