Kolkata, June 21 -- Prime Minister Narendra Modi said on Sunday that no country can become great power without maritime capabilities and that development, security, and prosperity are linked to the sea.

The Prime Minister, who commissioned three indigenously designed and built naval ships - INS Dunagiri, an advanced stealth frigate, INS Sanshodhak, a survey vessel (large) and INS Agray, an anti-submarine warfare shallow water craft - said that India has always regarded the ocean as a medium of cooperation but India also knows that strength is essential to safeguard peace.

"Security is necessary for prosperity and self-reliance is needed for building the future. Today, INS Agneya, INS Dunagiri, and INS Sanshodhak have joined the Indian N...