Reddit reviews Submarine: A Guided Tour Inside a Nuclear Warship (Tom Clancy's Military Reference)
We found 1 Reddit comments about Submarine: A Guided Tour Inside a Nuclear Warship (Tom Clancy's Military Reference). Here are the top ones, ranked by their Reddit score.
ACTIVE sonar is sending out a ping and mapping the return.
PASSIVE sonar is the hydrophone array - specifically matching heard radiated sound against a database to ID a vessel.
Dig out some Tom Clancy.
https://www.amazon.co.uk/Submarine-Nuclear-Warship-Military-Referenc/dp/0425183009
It acts as a reference sourcebook alongside Hunt for Red October.
One of the BEST descriptions of the AN-BQQ1000 array on the 688-class hunter-killer nuclear subs...
If you remember in HFRO and Crimson Tide - once a sub is detected, the array listens to propeller sounds and other noise signature to match the vessel type.
In dating/seduction - the guy has to pattern-match inbound IOIs. But when having to do that consciously - he needs to know what to look for...