Sirehna

GICAN member since 2005
Key Figures
Total revenue: 20 M €
Headcount: 140 people
General contact information
5 rue de l'Halbrane
44340 BOUGUENAIS
GICAN Correspondent
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Antoine LEPORC
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Floriane RIPOCHE
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About

Since 1986, SIREHNA has been designing and developing high-tech solutions for the maritime sector.

A 100% subsidiary of Naval Group since 2012, the company relies on recognized expertise, advanced technological know-how, and a strong culture of innovation. With nearly 150 employees, SIREHNA operates in France and internationally, making naval platforms more autonomous, stable, efficient, and intelligent.


SIREHNA’s activities cover five key areas:

  • Engineering and consultancy services: designing and optimizing naval platforms
  • Autonomous vessels: developing intelligent navigation systems
  • Testing and experimentation: validating innovative solutions under real-world conditions
  • Platform dynamics: improving stability and performance
  • Enhanced perception: processing data and providing decision-support solutions
Activities
Designers and suppliers of integrated functional solutions, equipment and components
Navigation, positioning, communications, telecommunications
Security and surveillance (detection, identification, cybersecurity, etc.)
Drones (underwater, surface, aerial) and underwater robotics
Products and Services
Dynamic Positioning System

The DP SIREHNA system is a certified, fully customizable dynamic positioning system (DP0, DP1 and DP2) with joystick control system as well as a trajectory control system (TCS).

At low or high speeds, the SIREHNA dynamic positioning system and autopilot automatically maintain the vessel’s position and heading using the propulsion already installed on board.

The standard control modes available are: Joystick Manual, Joystick Auto / Combined, Station Keeping and Auto-Track.

The standard control modes available are.

Other modes or features can be added for specific applications: Follow Target, Auto Area, Anchor Mode, Jack-up Function, Onboard Training, Onboard Capability plot and Heading / Track Keeping (high speed).

Surveillance Maritime Optronic (MOS)

The SIREHNA maritime optronic surveillance system, MOS, offers automatic detection, tracking and geolocation of any potential threat on the surface.

MOS can detect moving or stationary objects appearing anywhere within a radius of 0.5 m to 200 m, whatever the sea conditions (up to force 4+).

MOS offers automatic camera tracking and identification, as well as real-time analysis based on specific criteria (position, speed and trajectory).

MOS consists of one or more graphical interfaces with video display, radar view, alarm monitoring and zoom. MOS can display up to 6 thermal cameras, with video stream analysis, pan/tilt zoom control and 360° coverage.

SIRSEA

SIRSEA® (Standard Remote Operation System) is a complete solution designed to transform all types of platforms into autonomous or remotely operated vessels.

The solution includes a complete onboard system — control cabinet, platform interfaces, secure communications, and navigation sensors — as well as a remote control station, enabling real-time supervision and full control of the platform.

SIRSEA adapts to the operational requirements of each mission: communication systems, payload integration, piloting functions, levels of automation, additional sensors, and specific interfaces.

SIRSEA can be installed on a new-build vessel or retrofitted onto an existing platform. SIREHNA supports you throughout your drone conversion project, from the design phase to system installation and commissioning, and also provides remote operator training and operational maintenance services for the system.

Executives
Vincent VIVARES
Markets
Civilian maritime vessels
Defense Vessels / Security and Surveillance
Ports and maritime, coastal, and inland waterway infrastructure
Oil & Gas offshore
Marine Renewable Energies
Other inland waterway activities
Photos
SIREHNA REMOTE CONTROL CENTER
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334.54 Ko
SIREHNA SEAQUEST
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281.69 Ko
SIREHNA SEAQUEST 930
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219.72 Ko
Scientific Research & Navigation Solutions
Industrial expertises
Matériel de navigation
Recherche et matériel scientifique en mer

SIREHNA is a European specialist in controlling the dynamic behavior of platforms. Thanks to its expertise in naval hydrodynamics, SIREHNA offers its services for R&D and its solutions for applications for naval and port infrastructures, such as onboard navigation systems, autonomous and decision support systems, maritime surveillance systems,

SIREHNA is specialized in mastering the dynamic behavior of naval platforms since 1986. SIREHNA markets a range of services and products in the fields of navigation systems, maritime surveillance solutions, marine robotics and scientific engineering.

Products and Services

Bassin numérique

SIREHNA réalise des simulations pour valider des concepts en développement et évaluer les performances hydrodynamique. Notre bassin numérique est employé pour prédire et optimiser la performance de différents systèmes maritimes, navires de surfaces, sous-marins, hélices et turbines sous-marines. Le bassin numérique permet notamment de tester plusieurs caractéristiques dont la résistance, la tenue à la mer, l’hydro-acoustique, la cavitation ou l’aerodynamique.

Conduite d'essais en bassin

La conduite d’essais en bassin, à échelle réduite ou grandeur nature, est nécessaire pour appréhender des comportements complexes et la performance d’une plateforme navale.

SIREHNA propose son expertise et ses services pour la réalisation de bout en bout d’essais, de l’analyse du besoin à la conduite d’essais en bassin ou en mer, en passant par la conception et la production de la maquette et l’analyse des résultats d’essais.

Système de positionnement dynamique et autopilote

SIREHNA produit des systèmes de posiitonnement dynamique et autopilotes de navires depuis plus de 30 ans. Avec plus de 150 systèmes à la mer, SIREHNA est en mesure de fournir une gamme de produits adapté à tout type de propulsion et de plateforme, allant du DP0 au DP2.

Infrastructure

SIREHNA is based in Nantes (research and development, engineering office, production) and Saint Mandrier (production, testing center).

SIREHNA has a ISO 9001 certified Quality Management System since 2012.

SIREHNA is a fully-owned subsidiary of Naval Group.

References

SIREHNA adapts its products and services to different needs. The company covers all maritime sectors|both military|work ships|offshore|yachting and cruise ships.
Here are just a few of the companies that have placed their trust in us:
Naval group|French army|JifMar|Neptune|Chantier de l’Altlantique

Security, Safety & Environment
Industrial expertises
Surveillance portuaire et côtière
Contact(s)
Hervé NEAU
Contact

SIREHNA offers services and products in the field of maritime safety and security in both civil and military domains.

Alongside our partner 432 Technologies, SIREHNA also develops aviation course prediction tools for safe naval helicopter landing operations.

SIREHNA is an expert in dynamic behavior of naval platforms since 1986. SIREHNA markets a range of services and products in the fields of navigation systems, maritime surveillance solutions, marine robotics and scientific engineering.

Products and Services

Surveillance optronique maritime

La solution de Surveillance Optronique Maritime  de SIREHNA permet de detecter, pister et géolocaliser des menaces potentielles à la surface.

Le système permet le pistage et l’identification automatique de cibles sur le plan d’eau et une analyse en temps réels de ses caractéristiques (position, vitesse, cinématique).

La solution logicielle permet de synthétiser à l’opérateur les données RADAR et optroniques, la gestion des caméras et la remontée d’alertes.

MARGO

MARGO est un système de SHOL dynamique et de prédiction de trajectoire aviation pour assurer en sécurité et avec efficacité des opérations d’atterrissage et décollage d’helicoptères sur des pateformes navales.

Le système a reçu le prix AUDACE décerné par la Marine française en mai 2021.

Infrastructure

SIREHNA is based in Nantes (research and development, engineering office, production) and Saint Mandrier (production, testing center).

SIREHNA has a ISO 9001 certified Quality Management System since 2012.

SIREHNA is a fully-owned subsidiary of Naval Group.

References

SIREHNA adapts its products and services to the different needs of its customers, covering all maritime sectors and types of operations, both military and civilian.
Here are just a few of the companies that have placed their trust in us: Naval Group, DGA, Seaowl, JifMar, Nokia…

Maritime Drones & Autonomes Solutions
Industrial expertises
Concepteur, design, ingénierie, réglementation
Équipements embarqués – couche basse
Équipements et logiciels embarqués pour l'autonomie
Intégrateur système d'ensemble capacitaire
Plateformes et vecteurs physiques
Recherche, essais et formation
Systèmes de mission (C2 / C3, etc.)
Contact(s)
Sébastien MANIGOT
Contact

SIREHNA provides a wide product range covering USV and platform-agnostic autonomous C2 systems:

  • The SEAQUEST®  930, a multi-role USV dedicated to surveillance and protection for military and civilian applications;
  • The USV 420 and USV 765, robust and cost effective USV, designed for versatility on a semi-rigid platform;
  • SIRSEA® autonomous C2 system, transforms your platform into a USV

SIREHNA supports you throughout your project, from design to commissioning, operator training and maintenance services.

For over 30 years, SIREHNA has been a major player in the automation of navigating platforms. With more than 150 onboard systems at sea, SIREHNA is a specialist in naval hydrodynamics, motion prediction optimization, dynamic control and autonomy of naval platforms (dynamic positioning, autopilots, stabilization, tranquillization, unmanned systems).

Products and Services

SEAQUEST® 930

Le Seaquest® 930 est un USV multi-role, dédié notamment à la surveillance et protection pour des applications militaires comme civiles. L’USV combine modularité, rapidité et un large champs d’action dans un design compact, lui permettant d’être déployé depuis un navire-mère ou depuis un port. Le Seaquest® 930 est produit en collaboration avec le chantier naval Couach.

USV 420

L’USV 420 est un semi-rigide dronisé de 4.20m, conçu pour fournir une capacité dronisée à coûts maîtrisés, robuste et rapidement déployable en opération.

Simple à mettre en oeuvre et à opérer, ce drone peut être déployé depuis la côte ou depuis un navire-mère,  pour réaliser des expérimentations, des missions d’entrainement ou déployer de petites charges utiles.

USV 765

L’USV 765 est un drone de surface conçu sur la base du RHB PRORAID 765 du chantier naval Sillinger.

Cet USV combine puissance, stabilité et robustesse, pouvant atteindre une vitesse maximale de 40 noeuds pour des missions cotières et hauturières. Prévu pour être modulaire, cet USV permet d’emporter et de déployer une grande variété de charges utiles, lui permettant d’opérer dans une large gamme d’opérations (inspection, patrouille, applications de défense et de sécurité).

SIRSEA®

Le système de dronisation SIRSEA® permet de transformer votre embarcation en navire autonome. Modulaire, performant et résilient, le système SIRSEA® peut être déployé sur une plateforme neuve ou en modernisation d’une plateforme existante et fournit une situation maritime, capacité de navigation autonome et gestion de charges utiles à l’état de l’art.

La solution inclus le système embarqué de contrôle-commande de la plateforme, sa solution de communication sécurisée, son système de gestion de senseurs de navigation et de charges utiles, ainsi que la station opérateur, fournissant une supervision et un contrôle complet de la plateforme en temps réel.

Infrastructure

SIREHNA is based in Nantes (research and development, engineering office, production) and Saint Mandrier (production, testing center).

SIREHNA has a ISO 9001 certified Quality Management System since 2012.

SIREHNA is a fully-owned subsidiary of N

References

SIREHNA’s unamnned surface vessels are currently commercialized and have been deployed in various naval exercises including REPMUS 2025 (NATO), TFX Baltic Sentry 2025 (NATO), DANAE 2026 (France).

Décarbonation – Efficacité énergétique des navires
Industrial expertises
Optimisation architecture
Contact(s)
Hervé NEAU
Contact

Leveraging our expertise of dynamic vessel behaviour, SIREHNA offers a range of products and services to optimise vessels’ energy efficiency:

  • Propeller design
  • Estimating and optimising hydro and aero dynamic performances
  • Vessel digital twin

SIREHNA is specialized in mastering the dynamic behavior of naval platforms since 1986. SIREHNA markets a range of services and products in the fields of navigation systems, maritime surveillance solutions, marine robotics and scientific engineering.

Products and Services

Expertise hydrodynamique et aérodynamique

SIREHNA s’appuie sur son haut niveau d’expertise et une puissance de calcul dédiée pour fournir une prestation d’analyse et optimisation et de performance. Nos méthodes de calcul sont industrialisées et validées sur une large gamme de navires. Nos approches méthodologiques sont adaptées selon la complexité de l’étude, la précision requise, vos objectifs de performance et votre budget.

Infrastructure

SIREHNA is based in Nantes (research and development, engineering office, production) and Saint Mandrier (production, testing center).

SIREHNA has a ISO 9001 certified Quality Management System since 2012.

SIREHNA is a fully-owned subsidiary of Naval Group.

References

SIREHNA provides its hydro and aerodynamics expertise to a wide range of clients, including the French Navy, Naval Group and ACCWING, among others.

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