In a post on X, the Prime Minister said: “Congratulations to our scientists and engineers at ISRO on the successful launch of GSLV-F18 carrying NVS-03.’. New Delhi: Prime Minister Narendra Modi on Saturday congratulated scientists and engineers of the Indian Space Research Organisation (ISRO) on the successful launch of the GSLV-F18 rocket carrying India's next-generation navigation satellite, NVS-03, saying the mission marks an important step towards strengthening the country's indigenous satellite navigation.