SMArt 155
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A cutaway view of a SMArt 155 round, showing both submunitions. In this picture the lower submunition is itself shown in cutaway.
SMArt 155 is a German 155 mm artillery round, designed for a long range, indirect fire top attack role against armoured vehicles. The SMArt carrier shell contains two submunitions with infrared sensor and millimeter wave radar, which descend over the battlefield on ballutes and attack hardened targets with explosively formed penetrator warheads. Built with multiple redundant self-destruct mechanisms, these submunitions were specifically designed to fall outside the category of submunition weapons prohibited by the 2008 Convention on Cluster Munitions.
The name SMArt 155 is a contraction of its German name Suchzünder Munition für die Artillerie 155 (meaning "sensor-fuse munition for 155mm artillery"). SMArt is manufactured by GIWS mbh (Gesellschaft für Intelligente WirkSysteme mbH), a partnership between German armaments companies Rheinmetall and Diehl BGT Defence.
GIWS started full-rate production for the German Army in 1998, SMArt was first deployed by the Bundeswehr in 2000, and has been sold to the armies of Switzerland, Greece and Australia.