RTSYS Underwater Technologies

NemoSens is a compact autonomous underwater vehicle (AUV) designed for scientific, industrial and defence applications. Mission coverage can be extended thanks to the swarm technology and the possibility to deploy multiple AUVs. NemoSens is also compatible with all the RTsys Underwater Technologies product range such as the SonaDive diver held systems or beacons. NemoSens integrates the latest upgrades of both hardware and software developments from the RTsys Underwater Technologies product range. Which makes it the most efficient and reliable micro AUV of its generation. Software functions and measurement sensors (within a 2 kg limit) can be added on demand, so get ready to extend your range.

• Micro-AUV – Less than 1 m long – Less than 10 kg
• Very accurate positioning – Limited drift independent of the covered distance
• AUV position real-time follow-up from the surface – Live-tracking with light portable device
• Easy to deploy, recover and maintain
• Sparse-LBL repositioning

COMET-MCM is a 300 m operational AUV designed to meet the needs of detecting, locating and classifying underwater mines over large areas in a limited time thanks to its acoustic positioning system based on long baseline (LBL) algorithms providing great accuracy. COMET- MCM is able to navigate up to 20 hours. Its positioning accuracy is currently the best on the market, which provides the user with precise positioning information regarding the field data acquired from the drone’s various sensors during a mission. COMET-MCM operates either alone, in a fleet (SWARM) or in combination with a SonaDive (handheld sonar), providing a unique modular and flexible range for MCM operations, making it the ideal solution for solution for extensive monitoring and the surveillance of sensitive areas.

• Easy to deploy and recover with limited effort. Two-man portable, less than 40 kg
• Very accurate positioning (INS FOG). Limited drift independent of the covered distance
• AUV position real-time follow-up from the surface. Live-tracking with light portable device
• Limited redeployment effort, quick mission sequencing
• Fully compatible with all RTsys Underwater Technologies products

SEMA is a programmable, portable and recoverable autonomous underwater vehicle. It is used as a training target to train operators in ASW and torpedo firing. It can be easily deployed from a frigate or RHIB to train the crews of frigates, helicopters, submarines and patrol aircraft.

SEMA is easy to deploy from a RHIB manually, or from a ship via its launch ramp. SEMA’s navigation route is plotted via GPS points or segments. SEMA uses passive and active acoustics for its repeater and noisemaker functions. Its active repeater function enables 5 sonar response bands and 2 torpedo response bands. Each noise generator can emit 6 narrow-band and 2 wide-band signals.

High speed (up to 15kts) and high acoustic capabilities enable SEMA to simulate submarine behavior and trigger the detection of state-of-the-art sensors (torpedo homing head, LFAS, VDS, HDS).

SonaBlow allows, through a pyrotechnic chain, to eliminate the electric firing line by replacing it with an acoustic command. The system consists of a surface communication module (SCM) to which a waterproof transducer is connected. The transducer transmits an acoustic command to SonaBlow, which is equipped with an acoustic receiver and an energy source in order to fire two underwater electric detonators. The user is thus able to trigger one or several SonaBlow at any time from the surface. This system, in contrast to timed detonations, allows for permanent control of the firing command. SonaBlow is particularly well- suited for mine warfare operations (VSW, HEC, etc.) and Special Operations Forces (SOF), as well as for underwater explosive ordnance disposal (UXO) and marine and river development projects (civilian version).

• Encrypted communication (only for military version)
• Controlled timing (acoustic transmission)
• Communication range – 2 km
• Initiation of several SonaBlow from the same SCM
• Action reversibility
• Implementation by divers and ROV

SONADIVE assists divers on reconnaissance or object detection missions.
Divers can communicate with each other and the surface unit in real time via the acoustic modem, sharing contacts and their symbology (MILEC, MILCO…)
A module enables sonar to be repositioned while submerged and data transmitted to the surface.
The integrated navigation system is based on the following sensors: heading, immersion, DVL (Doppler) and GPS for surface initialization: Heading, immersion, DVL (Doppler) and a GPS for surface initialization.
Sonar and navigation data are recorded, enabling mission replay, analysis and data extraction.
Battery autonomy is 6 hours, extendable by interchangeable underwater batteries during the mission.

• Portable sonar for divers
• Deployable floating GPS antenna
• Integrated navigation unit
• High-resolution image camera and illumination
• Integrated georeferenced cartography on a point of interest
• Data logging
• Data extraction and analysis
• Data analysis
• Data extraction and analysis
• Full data logging (navigation and sonar)
• Post-mission bathymetric export
• Configuration and replay on PC or tablet
• 100% compatible with the RTsys ‘ AUVs range.

The SonaBlow underwater acoustic exploder replaces traditional electrical firing lines with an acoustic command transmitted from a surface module via a watertight transducer. The system remotely detonates one or multiple SonaBlow units, each equipped with an acoustic receiver and power source to activate underwater electric detonators.

Unlike timed methods, it ensures permanent control over firing, with encrypted communication in military versions, a range exceeding 2 km, and the ability to initiate multiple units simultaneously. Reversible and deployable by divers or ROVs, it is ideal for mine warfare (VSW, HEC), Special Operations Forces (SOF), underwater unexploded ordnance (UXO) clearance, and maritime or fluvial construction projects, balancing safety and operational flexibility.