Sparrow-derived ESSM with a range of more than 50 km. Four ESSM can be packaged in a single cell. Space is reserved for two additional Mk 41 modules, however it has not been utilised. Two Mark 49 rolling airframe missile (RAM) launchers with 21 missiles each are dedicated to short range air defence against missiles. They are located in the ships' fore and aft. Two quadruple launchers for 8 Harpoon anti-ship missiles are located between main mast and funnels. They replaced two double launchers for 4 MM38 Exocet missiles. An OTO Melara 76 mm compact naval gun is located in front of the frontal RAM launcher. The ships also feature two MLG27 autocannons which replaced the previous Rh-202, as well as four machine guns. Sensors and countermeasures The radar suite consists of Thales Nederland 2D air search (LW 08), 3D multi function (SMART-S) and two STIR 180 fire control radars in addition to two Raytheon navigation radars. The SMART-S tracks aerial and surface objects and can cue targets to the STIR fire control radars tasked with illuminating the tracked object for the semi-active (Evolved) Sea Sparrow missiles. The STIR radars are located below the SMART-S and in front of the LW 08 radars. Electronic countermeasures are provided by an EADS FL-1800S ECM suite. The class is fitted with an Atlas Elektronik DSQS-23BZ bow sonar. The ships were to receive low-frequency active sonars under the Franco-German LFTASS programme but France withdrew in 2000 and is now using a derivative of the British Sonar 2087; Bayern received the prototype TASS 6-3 sonar but it seems unlikely that more units will be ordered in the current budget environment. Modernisation From 2010 on, the F123 class underwent an upgrade under the auspices of the Fähigkeitsanpassung FüWES (FAF) project. The primary component of this program concerns the combat management system, for which SABRINA 21, a version of the Thales Nederland TACTICOS system has been installed. At the same time, the ships received an IFF upgrade to the EADS/Hensoldt MSSR 2000 I secondary radar system. However, its primary radars, specifically its long-range 2D search radar, the LW 08, and its medium-range 3D surveillance radar, the SMART-S, were excluded at the time. In July 2021, Swedish defense company Saab was awarded a contract over the delivery and installation of their Sea Giraffe 4A (replacing the LW 08), Sea Giraffe 1X (replacing the SMART-S) and CEROS 200 Fire