ISRO Successfully Launches GSAT-7R, India’s Heaviest Communication Satellite for the Navy

The Indian Space Research Organisation (ISRO) on 2nd November 2025 successfully launched the Indian Navy’s advanced communication satellite GSAT-7R (CMS-03) from the Satish Dhawan Space Centre, Sriharikota.

• The launch took place using ISRO’s most powerful rocket, LVM3, on its M5 mission.
• The satellite was successfully injected into a Geosynchronous Transfer Orbit (GTO).

About GSAT-7R (CMS-03)

• Weight: Approximately 4,400 kg, making it India’s heaviest indigenously built communication satellite to date.
• Purpose: To enhance the Indian Navy’s space-based communication and maritime domain awareness capabilities.
• Orbit Details:
  • Due to its high mass, the launch vehicle targeted a standard GTO.
  • The satellite will circularise its orbit using onboard propulsion systems.

Technological Significance

• The satellite is equipped with state-of-the-art indigenous components designed to provide robust and secure telecommunication coverage across the Indian Ocean Region (IOR).
• Its advanced payload includes transponders supporting voice, data, and video links across multiple communication bands.
• This ensures seamless connectivity between:
  • Ships, submarines, aircraft, and
  • Maritime Operations Centres of the Indian Navy.

Strategic and Technological Impact

• The successful launch demonstrates the LVM3 rocket’s capability to routinely carry satellites exceeding four tonnes to GTO.
• This achievement reduces India’s reliance on foreign launchers for heavy communication satellites.
• The mission also strengthens ISRO’s progress toward the Gaganyaan human spaceflight programme, which plans to use an evolved variant of LVM3.

Source: TH