Submarine Hull Arrays

Submarine Hull Arrays 

The Navy's newest Virginia-class submarines employ a Light Weight Wide Aperture Array (LWWAA) on their hulls for advanced acoustic detection.

The LWWAA system is a set of large array panels that are mounted on either side of the submarine which provide sonar sensor input to the submarine's combat system. Instead of traditional ceramic hydrophone sensors, the LWWAA uses FOAS technologies to convert a target submarine's acoustic energy in the water into information that can be used to identify and track it. Northrop Grumman designed, developed and manufactures the key optical sensing elements of this FOAS array.