President Droupadi Murmu undertook a submarine sortie on INS Vaghsheer at Karwar Naval Harbour, Karnataka, on December 28, 2025. INS Vaghsheer is an indigenous Kalvari-class submarine of the Indian Navy. This was President Murmu's maiden submarine embarkation, and she became the second President of India to undertake a submarine sortie after Dr A.P.J. Abdul Kalam. The official release says the sortie lasted for more than 2 hours, during which she interacted with the submarine crew and witnessed operational demonstrations. It also falls under national current affairs.
For exam preparation, the event is important beyond ceremonial protocol. It connects the President's role as Supreme Commander with defence preparedness, naval capability and civil-military engagement. In Prelims, likely factual areas include the office of the President, Indian Navy, Kalvari-class submarines, Karwar Naval Harbour and INS Vaghsheer. In Mains, it can be used as an example while writing on constitutional offices engaging with the armed forces, operational readiness and maritime security.
The science and technology angle is also relevant because submarine capability is a key part of modern naval warfare. The official release identifies the platform as an indigenous Kalvari-class submarine, making it useful for linking current affairs with static GK on defence technology and maritime security. For RAS and UPSC preparation, the update should be remembered both as a direct factual development and as a governance-defence linkage.