Weighing approximately 4,410 kg, GSAT-7R—also designated CMS-03—is India’s heaviest communication satellite to date. Developed indigenously by ISRO, the satellite will serve as a dedicated platform for the Indian Navy, providing secure, high-bandwidth, multi-band communication links across the vast expanse of the Indian Ocean Region (IOR).
Enhanced Naval Connectivity
The satellite is designed to offer real-time voice, data, and video communication among naval ships, submarines, maritime aircraft, and shore-based command centers. It will replace the decade-old GSAT-7 “Rukmini”, launched in 2013, thereby strengthening the Navy’s network-centric warfare capabilities and operational coordination.
According to officials, GSAT-7R supports C, extended C, and Ku-band frequencies, enabling encrypted and interference-resistant communication. The mission, funded by the Ministry of Defence (MoD) at an estimated cost of ₹1,589 crore, underscores India’s commitment to developing indigenous, secure space infrastructure for its armed forces.
The new satellite enhances India’s maritime situational awareness, command-and-control resilience, and strategic reach across the IOR—an area witnessing growing global competition. By linking all naval assets through a dedicated space network, GSAT-7R enables faster decision-making, improved data fusion, and seamless interoperability between fleet units and command structures.
Defence experts note that GSAT-7R’s successful deployment marks a key milestone in India’s Defence Space Vision, paving the way for similar communication satellites for the Indian Air Force and Army in the coming years.
