The Vertical Launch - Short Range Surface to Air Missile, or VL-SRSAM is a quick reaction surface-to-air missile developed by Defence Research and Development Organisation (DRDO). During mid-course flight, the missile uses fibre-optic gyroscope based inertial guidance mechanism while in terminal phase uses active radar homing. With lock on before launch (LOBL) and lock on after launch (LOAL) capability, the missile receives mid-course update via datalink. VL-SRSAM intended to replace older Barak 1 surface to air missile system onboard Indian Navy warships. It will also be used as short range air defence system for Indian Air Force.