OVERVIEW: The S 613 L Indomptable [Le Redoutable Class] is a ballistic missile submarine (SSBN) operated by the French Navy. Commissioned in 1978, it represents a key component of France's nuclear deterrent force, the Force de Frappe. The class was designed to provide a secure and survivable platform for launching nuclear-tipped ballistic missiles, ensuring a credible second-strike capability.

DETAILS:
The Le Redoutable class of submarines was conceived in the 1960s as a response to the evolving geopolitical landscape and France's desire for an independent nuclear deterrent. Construction began in the late 1960s, with the lead ship, Le Redoutable, entering service in 1971. The class marked a significant advancement in French submarine design and construction capabilities. The design prioritized underwater endurance, acoustic stealth, and the ability to launch missiles while submerged. The Indomptable benefited from incremental improvements during construction, representing a later iteration of the initial design. While the Redoutable class have all been decommissioned, they represent an important step in the history of French naval power.

The primary role of the Indomptable was to provide a submerged launch platform for its strategic ballistic missiles. This role demands exceptional stealth and long-range patrol capabilities. While primarily an SSBN, the Indomptable also possesses capabilities for anti-submarine warfare (ASW) and anti-surface warfare (ASuW), albeit secondary to its strategic mission. The vessel would undertake extensive patrols, remaining submerged for extended periods to ensure its survivability and readiness to respond to any potential threat. The installation of the ARUR 10 [DR 2000U] radar warning receiver provides awareness of potential surface and air threats, while the DSUV 61A and DSUV 23 towed arrays allow for improved passive sonar detection capabilities, enhancing its ASW effectiveness.

The Indomptable's sensor suite and armament reflect its strategic and tactical roles. The DUUX 2A bow sonar provides active and passive detection capabilities, while the DUUG 1B fire control system integrates sensor data for targeting solutions. The DRUA 33C Calypso III [TRS 3100] radar provides surface search and navigation capabilities. The two periscopes, one optical and one low-light television (LLTV) equipped, are vital for visual observation and navigation in shallow waters or when operating near the surface. The 550mm torpedo tubes offer a self-defense capability against hostile submarines or surface vessels. The M20/TN60 ballistic missiles formed the core of its strategic armament, representing France's nuclear deterrent. The signal ejector is utilized for communication purposes while submerged.

SPECIFICATION: Length: 128.0 m || Beam: 10.6 m || Draft: 10.0 m || Disp: 6500 t

SENSORS: DUUX 2A || DSUV 61A || DSUV 23 || ARUR 10 [DR 2000U] || DUUG 1B || DRUA 33C Calypso III [TRS 3100] || Generic Submarine Periscope, Optical || Generic Submarine Periscope, LLTV

ARMAMENT: Signal Ejector || M20/TN60 || 550mm TT