Navigation systems

Reliable and accurate for all types of nuclear or conventional submarines, Safran Electronics & Defense navigation systems provide safe, discreet submarine navigation. These systems are equipped with various sensors which supply the required data to crew members and the combat system. These solutions are all designed to seamlessly integrate new or retrofit vessels.

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Sigma 40EXP: inertial navigation system for submarines

Sigma 40EXP (Ethernet eXtended Performance) is the latest Ring Laser Gyro (RLG) Generation of Safran Electronics & Defence. Used in operation by the French Navy on the future generation submarines barracuda, SIGMA EXP is the most compact, integrated inertial navigation system in the world for its level of performances. Thanks to its open & modular architecture, its multiple Digital and Ethernet  outputs, Sigma 40 EXP is the ideal solution for new-generation nuclear-powered or conventional attack submarines and for modernization of submarines.
The Sigma 40EXP ring-laser-gyro inertial navigation system calculates and transmits position and attitude information (heading, pitch and roll). With its free inertial navigation (without GPS recalculating) better than 1 Nm/24 hr-accuracy, Sigma 40 EXP offers a very high performance, long-term navigation and contributes to the submarine's excellent submerged endurance in harsh operational environment.  

SIGMA 40EXP: 1 Nm/24 hours submarine Inertial Navigation System for new generation submarines
Sigma 40XP: inertial navigation system for submarines

Sigma 40XP (eXtended Performance) is the most compact, integrated inertial navigation system in the world for its level of performance. Thanks to its open, modular architecture, Sigma 40XP is the ideal solution for new-generation nuclear-powered or conventional attack submarines, or for modernizing existing vessels.
The Sigma 40XP ring-laser-gyro inertial navigation system calculates and transmits position and attitude information (heading, pitch and roll). With its 1 Nm/24 hr-accuracy in free inertial navigation (without GPS recalculating), Sigma 40XP offer a very high performance, long-term navigation and contributes to the submarine's excellent submerged endurance.  

SIGMA 40XP: 1 Nm/24 hours submarine Inertial Navigation System