MASS (Maritime Acoustic Scoring and Simulation) System

MASS is a waterborne, portable, ship-deployable and recoverable range and training tool that scores live-fire surface gunnery, air-to-ground weapons exercises and other test events, enabling self-conducted naval gunfire support training anywhere at sea.

Six sensor buoys with acoustic sensors detect and triangulate projectile water impacts; GPS positions the buoys and firing platform, and data is sent over the secure Iridium network to a system controller that displays impact locations in real time. Training can use non-detonating shells, avoiding travel to land-based ranges.