SonaDive® assists divers during recognition or object detection missions. The embedded navigation system relies on the several sensors: heading, immersion, DVL (Doppler) and a GPS for surface initialization. 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 communication module allows underwater repositioning and transmission of data to the surface. Sonar and navigation data are fully recorded allowing mission replay, data analysis and export.With 6 hours of battery life, the autonomy can be extended by interchangeable batteries under water during mission.