RTSYS
French designer and manufacturer of underwater acoustics and autonomous underwater vehicle systems for civil, scientific and defence applications.
Last updated September 29, 2026
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Overview
RTSYS (also styled RTsys Underwater Technologies) is a French company specializing in underwater acoustics and autonomous vehicles. Based in Lorient, Brittany, it designs and manufactures innovative solutions for civil, scientific and defence applications, and its systems are recognized worldwide across four main sectors: passive acoustic monitoring (PAM), autonomous underwater vehicles (AUV), anti-submarine warfare (ASW) and mine countermeasures (MCM). In passive acoustic monitoring, RTSYS supplies a range of solutions for marine biologists and PAM operators, from post-processing recorders to real-time monitoring buoys and multiparameter stations. Its AUV range serves navies and research institutes and can host various payloads such as DVL, magnetometers, side-scan sonars and other customer-specified sensors and probes. In anti-submarine warfare, global navies use its recoverable targets for sonar training, torpedo exercises and signature analysis, as well as a portable towed system for rapid sonar calibration and performance testing. Its mine countermeasures ecosystem includes AUVs, handheld navigation sonar for divers and an acoustic firing device for mine and UXO clearance missions or search and rescue operations in shallow and cloudy waters. The company was acquired in 2012, when Ace Capital Partners funds invested in the company, and it has since developed the design and manufacture of submarine acoustics and robotics products on its own resources. Its expertise is recognized in four main areas of innovation, and numerous R&D programs have been carried out in partnership with the Direction Générale de l'Armement, the Poles Mer de Compétitivité and the European Defense Fund to design miniaturized products without compromising performance or cost. RTSYS is part of the Seafin group, a holding company of Neotek and RTSys that is a leader in the distribution and manufacturing of high-tech products for the blue economy. In November 2021, Sea Vorian, a company created by a pool of investors led by Jean-Luc Biache and François-Xavier de Cointet, acquired 100% of Seafin from its founder Claude Pacheco, the Atalaya and Financière de Brienne 2 funds managed by Ace Capital Partners, and SFLD. The transfer opened a new stage for the Seafin group to become an undisputed European player in the naval, civil and defence submarine markets. RTSYS states that its passion for underwater acoustics and robotics drives its daily action, with the goal of making the sea a safer place. It believes underwater acoustics is the right means to create a better understanding of the seas, helping EOD divers eliminate danger and naval mines and helping navies ensure security through enhanced ASW capacities. It also works to protect wildlife, assisting marine biologists in assessing underwater noise and taking remedial actions as anthropogenic sounds are amplified by the rise of maritime transport and offshore energies. The company emphasizes massive R&D investments to develop reliable, easy-to-use and cost-effective products, and its efforts are rewarded by ISO 9001 accreditation renewal. It operates a sea test-base in Lorient harbor in a former WWII submarine base, with two boats used by a dedicated testing team for trials off the coast of Brittany.
History
RTSYS is a French company specializing in underwater acoustics and autonomous vehicles, based in Lorient, Brittany. It designs and manufactures innovative solutions for civil, scientific and defence applications, and its systems are recognized worldwide in four sectors: passive acoustic monitoring (PAM), autonomous underwater vehicles (AUV), anti-submarine warfare (ASW) and mine countermeasures (MCM). The company was acquired in 2012, when Ace Capital Partners funds invested in the company. Since then, RTSYS has developed on its own resources the design and manufacture of submarine acoustics and robotics products. Its high level of expertise is now recognized in four main areas of innovation: passive acoustic monitoring (PAM), underwater exploration via autonomous underwater drones (AUV), mine countermeasures (MCM) and anti-submarine warfare (ASW). Numerous R&D programs have been carried out in partnership with the Direction Générale de l'Armement, the Poles Mer de Compétitivité, or the European Defense Fund, to design miniaturized products without compromising either performance or cost. RTSYS is part of the Seafin group, a holding company of Neotek and RTSys that is a leader in the distribution and manufacturing of high-tech products for the blue economy. Neotek was founded in September 2004 by Claude Pacheco and specializes in the distribution and integration of data acquisition, oceanographic and hydrographic instrumentation, positioning, UAV and mine clearance equipment. RTSys was acquired in 2012 when Ace Capital Partners funds invested in the company. On November 8, 2021, Sea Vorian, a company created by a pool of investors led by Jean-Luc Biache and François-Xavier de Cointet, acquired 100% of Seafin from its founder Claude Pacheco, the Atalaya and Financière de Brienne 2 funds managed by Ace Capital Partners, and SFLD. With the transfer of the group to Sea Vorian, a new stage opened for the Seafin group to become an undisputed European player in the naval, civil and defence submarine markets. Claude Pacheco commented that with the new Sea Vorian team, a new story would be written for the Seafin group, and Jean-Luc Biache, majority shareholder, and François-Xavier de Cointet shared the vision. RTSYS states that its passion for underwater acoustics and robotics drives its daily action, with the goal of making the sea a safer place. It believes underwater acoustics is the right means to create a better understanding of the seas, helping EOD divers eliminate danger and naval mines and helping navies ensure security through enhanced ASW capacities. It also works to protect wildlife, assisting marine biologists in assessing underwater noise and taking remedial actions as anthropogenic sounds are amplified by the rise of maritime transport and offshore energies. The company emphasizes massive R&D investments to develop reliable, easy-to-use and cost-effective products, and its efforts are rewarded by ISO 9001 accreditation renewal. It operates a sea test-base in Lorient harbor in a former WWII submarine base, with two boats used by a dedicated testing team for trials off the coast of Brittany. Renewable marine energies, deep-sea exploration and anti-submarine warfare are all sectors in which the Seafin group claims a leading position.
Neotek founded by Claude Pacheco, specializing in distribution and integration of data acquisition, oceanographic and hydrographic instrumentation, positioning, UAV and mine clearance equipment.
RTSys acquired when Ace Capital Partners funds invested in the company; it develops design and manufacture of submarine acoustics and robotics products on its own resources.
Sea Vorian, created by a pool of investors led by Jean-Luc Biache and François-Xavier de Cointet, acquires 100% of Seafin from founder Claude Pacheco, Atalaya and Financière de Brienne 2 funds managed by Ace Capital Partners, and SFLD.
Products and positioning
High-technology underwater acoustics and robotics for civil, scientific and defence applications, with a focus on miniaturized, reliable, easy-to-use and cost-effective products.
PAM recorders
Post-processing recorders for passive acoustic monitoring.
PAM buoys
Real-time monitoring buoys for passive acoustic monitoring.
PAM stations
Multiparameter assessment stations for passive acoustic monitoring.
AUV range
Autonomous underwater vehicles for navies or research institutes, hosting payloads such as DVL, magnetometers, side-scan sonars and other customer-specified sensors and probes.
ASW recoverable targets
Recoverable targets for sonar training, torpedo exercises and signature analysis.
Portable towed system
Portable towed system for rapid sonar calibration and performance testing.
MCM AUVs
Autonomous underwater vehicles for mine countermeasures.
Handheld navigation sonar
Handheld navigation sonar for divers.
Acoustic firing device
Acoustic firing device for mine and UXO clearance missions or search and rescue operations in shallow and cloudy waters.
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