Group : Sonar Systems
Status : Active
Also Known As : 4110 CL, Type 4110
Origin : France, Italy
Contractors : SELEX ES, Thales
Initial Operational Capability (IOC) : 2006
Total Production : 13

The bow mounted UMS 4110 CL is a long-range sonar for offensive ASW (Anti-Submarine Warfare) and self-protection. It is designed for multi-mode operation and can simultaneously operate two active channels - ASW transmission modes - as well as passive channels for listening only or for the tracking of torpedoes. It also has the capability to carry out obstacle avoidance. A conventional cylindrical array lies at the heart of the UMS 4110 CL system, operating at about 5 kHz so as to exploit the range advantage of a rather low frequency.

In December 2001, Thales France and Alenia Marconi Systems were awarded a development contract for a new sonar system, known as 4110 CL, to be integrated into the four Horizon frigates. The 4110 CL is a hull-mounted medium frequencies sonar system featuring advanced signals processing. The development contract also included the procurement of four such sonar arrays to be mounted on two French and two Italian ships. The same sonar system was also selected for the FREMM multi-purpose frigates for the Navies of France and Italy.