GLSV was recently awarded a SBIR Phase-I contract from the US Navy to develop a lightweight, compact, expendable, low-cost surface ship countermeasure. All key US Navy surface combatants require expendable countermeasure protection from adversarial torpedoes. These acoustic device countermeasures are used as decoys to thwart enemy torpedo attacks by producing an acoustic signature that mimics a submarine, to misdirect the incoming torpedoes away from the ship. The Navy desires a countermeasure device redesigned specifically for surface ship use, with reduced unit and lifecycle costs to facilitate installation aboard a wider range of surface platforms.