OVERVIEW: The S 616 *Le Triomphant* is a ballistic missile submarine (SSBN) of the *Le Triomphant* class, operated by the French Navy (Marine Nationale). Entering service in 1998, it represents a cornerstone of France’s nuclear deterrent force, the *Force de Frappe*.

DETAILS: The *Le Triomphant* class was conceived in the late 1970s as a replacement for the aging *Redoutable* class SSBNs. Design priorities emphasized enhanced stealth characteristics, improved operational endurance, and the capability to deploy the M45 submarine-launched ballistic missile (SLBM). The program experienced delays and cost overruns, partly due to the increased emphasis on acoustic signature reduction and the integration of more advanced sensor suites compared to its predecessors. The *Le Triomphant* design incorporates significant noise reduction features, including pump-jet propulsion, raft-mounted machinery, and advanced hull coatings. The class represents a significant technological leap in French submarine design.

*Le Triomphant's* primary role is to provide a secure and survivable second-strike nuclear capability as part of France's nuclear deterrent strategy. It achieves this through the deployment of SLBMs, ensuring the nation’s ability to retaliate even in the event of a first strike. Although primarily an SSBN, *Le Triomphant* retains a limited anti-submarine warfare (ASW) capability for self-defense and force protection. Its advanced sonar suite allows for the detection and tracking of potential threats, while the torpedo tubes provide a means to engage hostile submarines. Anti-surface warfare (ASuW) capabilities are present but of secondary importance, with the torpedoes serving as the primary means of engaging surface combatants.

The *Le Triomphant* benefits from an advanced suite of sensors designed for optimal underwater awareness. The DMUX 80 bow and flank arrays provide comprehensive passive and active sonar coverage. The DRUA 33C Calypso III radar, likely using the TRS 3100 suite, offers surface search and navigation capabilities. The ARUR 13 (DR 3000U) electronic support measures (ESM) system provides detection and identification of radar emissions from potential threats. The DSUV 61B towed array sonar further enhances long-range detection capabilities, complementing the hull-mounted arrays. The DUUG 6 (M5) combat management system integrates sensor data and provides fire control solutions. The installation of both optical and low-light television (LLTV) periscopes allows for visual situational awareness during submerged operations. The 533mm torpedo tubes provide the capability to launch anti-submarine and anti-surface torpedoes. The Signal Ejector would be used to deploy countermeasures or communications buoys. Finally, the M45/TN75 SLBM constitutes the primary armament, providing the strategic nuclear strike capability.

SPECIFICATION: Length: 138.0 m || Beam: 12.5 m || Draft: 10.6 m || Disp: 12640 t

SENSORS: DMUX 80 Bow || DMUX 80 Flank || DRUA 33C Calypso III [TRS 3100] || ARUR 13 [DR 3000U] || DSUV 61B || DUUG 6 [M5] || Generic Submarine Periscope, Optical || Generic Submarine Periscope, LLTV

ARMAMENT: M45/TN75 || Signal Ejector || 533mm TT