Prime Minister Narendra Modi on Sunday commissioned three indigenously built naval ships at Kolkata's Syama Prasad Mookerjee Port, underscoring India's growing maritime strength and push for defence self-reliance, with the vessels set to bolster capabilities across combat, survey and anti-submarine operations. The three indigenously built naval ships - stealth frigate Dunagiri, survey vessel (large) Sanshodhak, and anti-submarine warfare shallow water craft Agray - represent key operational capabilities across maritime combat, hydrographic surveying and anti-submarine warfare.