India, May 18 -- The Indian Navy is set to commission three indigenous vessels -- a stealth frigate, an anti-submarine warfare craft and a survey ship -- in a fresh push to strengthen its operational edge in the Indian Ocean Region, where China has steadily expanded its maritime presence, officials familiar with the matter said on Sunday.

The vessels -- Dunagiri, Agray and Sanshodhak -- were built by Kolkata-based Garden Reach Shipbuilders & Engineers (GRSE) and were recently delivered to the navy.

Dunagiri, the fifth stealth frigate under the Rs.45,000-crore Project 17A programme, is expected to be commissioned within a month, the officials said, requesting anonymity. Agray, an anti-submarine warfare shallow water craft (ASW-SWC), and ...