IAI's Malat Naval Rotary UAV (NRUAV) system replaces a manned helicopter's avionics with the flight control system from IAI's Heron UAV. The system is designed to carry a variety of ISR payloads including SAR, EO, and SIGINT. India began development of a NRUAV system for the Chetak (Alouette III) beginning in 2008. The system would be capable of missions 6 hours in duration at a range of 120 km from the launching ship.
IAI Malat UAS promotional video.