'Sanshodhak', the fourth of four ships of Survey Vessels (Large) (SVL) Project, being built by L&T/ GRSE for Indian Navy was launched on June 13, 2023 at Kattupalli, Chennai. The chief guest of the Launch Ceremony was VAdm Adhir Arora, Chief Hydrographer to Government of India. In keeping with the Naval maritime tradition, Tanvi Arora launched the ship to the chanting of invocation from Atharva Veda. The ship named 'Sanshodhak', meaning 'Researcher', signifies the primary role of the ship as a Survey Vessel.

The contract for building four SVL ships was signed between MoD and Garden Reach Shipbuilders & Engineers (GRSE), Kolkata on Oct 30, 2018. As per the build strategy, the first ship would be built at GRSE, Kolkata and construction of the remaining three ships upto outfitting stage, has been sub-contracted to M/s L&T Shipbuilding, Kattupalli. The first three ships of the project, Sandhayak, Nirdeshak and Ikshak were launched on Dec 5, 2021, May 26, 2022 and Nov 26, 2022 respectively.

SVL ships will replace the existing Sandhayak Class survey ships, with new generation hydrographic equipment, to collect oceanographic data. The Survey Vessel (Large) ships are 110 m long, 16 m wide with a displacement of 3,400 tons. The hull of these ships is made from indigenously developed DMR 249-A steel manufactured by Steel Authority of India Limited.

With a capability to carry four Survey Motor Boats and an integral helicopter, the primary role of the ships would be to undertake full scale coastal and deep-water hydrographic surveys of Ports and navigational channels. The ships would also be deployed for collecting oceanographic and geophysical data for defence as well as civil applications. In their secondary role, the ships are capable of providing limited defence, HADR, and can serve as Hospital ship during emergencies.

The Survey Vessels Large will have over 80 per cent indigenous content by cost, ensuring defence production by Indian manufacturing units with a spin off in employment generation and warship building capability in the country. Launch of the fourth Survey Vessel reinforces our resolve in indigenous shipbuilding, as part of the Government's vision of 'Make in India' and 'Aatma Nirbhar Bharat'.