“Permission to take a console,” Pastor asked Hazelton, the formality in reference to the fact that Hazelton was in charge in sonar, and even the ship’s commanding officer needed to ensure that taking a console would not interfere with the sonar search. Hazelton replied in the affirmative, handing Pastor a headset. Pastor strapped it on, adjusted the microphone and looked down on his dual-screen console display. The upper screen was selected to the waterfall display of short-and medium-time broadband noise. It was a way of “seeing” what the ship’s spherical array heard, but with this display the user could listen to all directions at once and look back in time to compare this second’s noise with last second’s, this minute’s noises with the minute before.
