[How does the induction of multi-role frigates, hydrographic vessels, and ASW shallow water craft together reflect a balanced naval capability development strategy?](/upsc-mains-answer/induction-multi-role-frigates-hydrographic-vessels-5826c51)

The simultaneous commissioning of Dunagiri, Sanshodhak and Agray at Kolkata in June 2026 — all designed by the Navy's Warship Design Bureau and built by GRSE, a Defence PSU — illustrates that maritime power rests not on a single glamorous platform but on a layered mix of combat, survey and littoral assets [1].

Blue-water combat depth: multi-role frigates

• Dunagiri, the 5th Project 17A (Nilgiri-class) stealth frigate and 2nd from GRSE, adds stealth, firepower, automation and survivability for sustained open-ocean deployment [2].
• Multi-role frigates provide the escort and sea-control core around which carrier and task-force operations are built.

Foundational enabler: hydrographic capability

• Sanshodhak, the 4th and last Survey Vessel (Large), performs coastal and deep-water hydrographic survey, charting harbour approaches and navigational channels [3].
• Accurate charts and oceanographic data are prerequisites for submarine operations, amphibious landings and missile accuracy; the same data serves civil shipping and disaster response — a genuine dual-use asset [3].

Littoral and sub-surface screen: ASW SWC

• Agray, 4th of eight ASW Shallow Water Craft, carries lightweight torpedoes, indigenous rocket launchers and shallow-water SONAR for coastal anti-submarine work and surveillance [4].
• Frigates cannot operate effectively in shallow approaches; waterjet-propelled SWCs plug this gap, countering intrusions and submarine activity near India's coast.

Indigenisation as the common thread

• Sanshodhak carries over 80% indigenous content by cost [3]; the Dunagiri project engaged over 200 MSMEs and generated large-scale employment [2].
• This converts capability building into industrial and technological depth, the essence of Aatmanirbhar Bharat in defence.

Taken together, the three inductions show capability being developed across the full spectrum — deep sea, shallow water and the information layer that underpins both — rather than in silos. Sustaining this balance requires steady, timely deliveries, and stronger private-yard participation alongside PSUs. Such a spectrum-wide, self-reliant force posture is what will enable India to remain a credible net security provider in the Indian Ocean Region.