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Surface Vessel Weapon System
vertical-launched anti-submarine rocket
rum-139 vl-asroc vertical launched anti submarine rocket

The Vertical Launch Anti-Submarine Rocket (ASROC) (VLA) is a surface-ship launched anti-submarine missile designed to deliver the Mk-46 Mod 5A(SW) or the Mk-54 torpedo to a water-entry point close to a targeted submarine.

The VLA is intended to provide vertical-launch-capable surface combatants with an all-weather, 360-degree quick-reaction, standoff antisubmarine weapon capability. It is carried by Aegis-equipped ships (cruisers and destroyers) equipped with the Mk-41 Vertical Launching System (VLS) and the SQQ-89 ASW Combat System. VLA includes a solid-propellant booster thrust vector control (TVC), and a digital autopilot control (DAC) to guide the missile from a vertical orientation through a pitch-over maneuver into a ballistic trajectory intended to deliver the torpedo to an aim point on the ocean surface. Originally deployed with the Mk-46 Mod 5A(S) torpedo, all VLAs have been upgraded with the Mk-46 Mod 5A (SW) torpedo. This variant of the Mk-46 torpedo provides improved performance in shallow water. With Initial Operational Capability (IOC) of the Mk-54 Lightweight Torpedo in 2010, a program is currently underway to upgrade the VLA inventory with the Mk-54 Lightweight Torpedo. VLAs with Mk-54 torpedoes are planned for fleet delivery in FY 2010.

Contractor: Lockheed Martin
Propulsion: Solid propellant rocket
Length: 16.7 feet (5,1 meters)
Diameter: 14.1 inches (35,8 centimeters)
Weight: 1,650 pounds (748 kilograms)
Range: 24000 yards (22 kilometers)
Warhead: Mk-46 torpedo, Mk-54 MAKO torpedo


rum-139 vl-asroc vertical launched anti ship rocket
RUM-139 VL-ASROC was launched from the aft Mk-41 VLS aboard USS Barry (DDG 52)

RUM-139 VL-ASROC was launched from the aft Mk-41 VLS aboard USS Barry (DDG 52)

rum-139 vl-asroc mk-41 vertical launching system
RUM-139 VL-ASROC was launched from the forward Mk-41 VLS aboard USS Mustin (DDG 89) - March 2014

RUM-139 VL-ASROC was launched from USS Michael Murphy (DDG 112) - February 2013

VL-ASROC was launched during tests in 1984

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