Can you really hear someone on another sub fart if you are locked onto them?All surface warships, including every other countries, are extremely easy to track. I'm saying that mildly.
The ships from NATO are a bit tougher but depending on ocean conditions it wouldn't be uncommomn to pick them up at 30,000+ yards.
Once you pick up a destroyer, no masking agent will take away the tonals we receive initially. Once its locked in, its pretty much a done deal unless the ship goes into our baffle region.
I've never actually heard of the prairie system unless its post 2008.