Multi Ammunition Softkill System (MASS) is a naval self-defence system produced by Rheinmetall of Germany. It is connected to the ship's sensors and protects ships from attacks by advanced sensor-guided missiles by launching decoys that operate in all relevant wavelengths of the electromagnetic spectrum: ultraviolet, electro-optical, laser, infrared and radar. MASS can be either plugged into the command and control module of a naval vessel, or operate autonomously.

Rheinmetall Defence stated that "MASS has attracted orders from 9 nations, for 130 launchers, on 15 different classes of naval vessels" as of 31 March 2009. As of 3 March 2011, this has been expanded to a total order of at least 172 units.^[1] Roughly one year later, on the 17 April 2012, the total was 186 launchers for 22 different classes of vessels in 11 different nations.

Customers

•  Germany: Brandenburg-class frigates, Braunschweig-class corvettes, Frankenthal-class minehunters, Kulmbach-class mine hunters, Baden-Württemberg-class frigates and the future F126 frigates
•  Canada: Halifax-class frigates
•  Pakistan: Tariq-class destroyers
•  Finland: Hamina-class missile boats, Hämeenmaa-class minelayers, Rauma-class missile boats, Pohjanmaa-class corvettes
•  New Zealand: Anzac-class frigates, as part of the ANZAC modernization programme.^[2]
•  Norway: Skjold-class corvettes
•  Oman: Khareef-class corvettes
•  Sweden: Göteborg-class corvettes, Stockholm-class corvettes, and Visby-class corvettes
•  United Arab Emirates: Baynunah-class corvettes, Abu Dhabi-class corvettes, Falaj 2-class patrol vessels
•  Peru: Lupo-class frigate^[3]
•  South Korea: LST-II-class landing ships^[4]
• Two additional unknown customers.
• Australia: Hobart-class Destroyers and ANZAC-class Frigates, by 2027.

Future Operators

•  Bulgaria: The Bulgarian Navy's New Multi-Purpose Corvettes are going to Utilize the MASS system^[5]