The Equalizer was also used as the basis for the "Sea Vulcan 25", a turret mounted gun for naval ship self-defense, although not as a pneumatic drive and the turret motor by twin lead-acid battery.
The Equalizer was also used as the basis for the "Sea Vulcan 25". One unique advantage; the system was capable of operating independently of ships power, the gun and ammunition magazine were powered by a 3,000 psi pneumatic drive and the turret motor by twin lead-acid battery.