– How could a Canadian P3 aircraft, while flying over the Atlantic Ocean, possibly detect ‘banging noise’ attributed to a small submersible vessel potentially thousands of feet below the surface?

Question

– How could a Canadian P3 aircraft, while flying over the Atlantic Ocean, possibly detect ‘banging noise’ attributed to a small submersible vessel potentially thousands of feet below the surface?

In: 3042

Answer 1

These aircraft are explicitly designed and equipped for this exact mission: finding submarines. They drop sonar buoys which relay back to the aircraft what they can hear in the water.

My grandfather flew numerous such missions for the Navy in the early 1950s using blimps.