Video: Watch the Navy’s futuristic railgun blow stuff up The United States Navy is set to deploy its electromagnetic railgun*on one of its*joint high-speed vessels (JHSV) in 2016.*According to the Navy, the *******uses “an electromagnetic force - k**wn as the Lorenz Force - to rapidly accelerate and launch a projectile between two conductive rails.” The railgun*will be able to fire projectiles*at a much higher velocity than current ******ry, obviously allowing them to travel much greater distances.