The SinoGNSS SV600 is ComNav's larger unmanned surface vessel for hydrographic survey, built around a dual-moon-pool hull that lets it carry and run multiple sensors at once -- single-beam or mini multibeam echo sounders, ADCPs, side-scan sonar -- with a payload capacity of up to about 42 kg. It positions itself using a dual-antenna GNSS/IMU module for continuous tracking through brief signal loss, can be piloted by radio or 4G to roughly 2.5 km range, and adds obstacle-avoidance radar and a double-deck hull for operating safety.