Kolkata, June 21 -- Prime Minister Narendra Modi on Sunday commissioned three indigenously designed and built naval ships-INS Dunagiri, INS Sanshodhak and INS Agray during his visit at the Shyama Prasad Mookerjee port in Kolkata.

PM Modi focused on India's maritime power and indigenous defence production under the 'Make in India' programme.

He said, "Nobody can ignore the importance of maritime power. No nation can become a great power without it. Oceans are linked to security, prosperity and development. Most of the international trade takes place on maritime routes. Data networks are laid down on sea beds. In the coming days, critical minerals, deep-sea resources, and new energy sources will also be linked to oceans. Nations that cont...