Over Fern Ridge Lake?

Anyone know what an ASQ-227 mission computer and ASQ-78B acoustics suite is used for?

"P-3C BMUP {Update III Block Modification Upgrade Program} (US): 25 aircraft with interior modification to convert selected NUD/SUDS, UD2/SUDS and UD2.5/SUDS to carry ASQ-227 mission computer and ASQ-78B acoustics suite"

>>2670377

Maybe it's like Pyramid Lake in Nevada and has underground tunnels to the ocean?

>>2670377

Fern Ridge is home to multiple parks and yacht clubs.

>>2670512

Something underground?

>>2670622

thanks