Indian Navy Receives Sanshodhak Survey Vessel

The Indian Navy has recently received ‘Sanshodhak’ (Yard 3028), the fourth and final Survey Vessel (Large) under a key indigenous shipbuilding programme. Delivered by Garden Reach Shipbuilders & Engineers Ltd (GRSE), Kolkata, the vessel strengthens India’s hydrographic capabilities and supports both defence and civil maritime operations.

Project Background and Development

The contract for the construction of four Survey Vessel (Large) ships was signed on 30 October 2018. Sanshodhak is the last vessel in this series, following INS Sandhayak, INS Nirdeshak, and INS Ikshak, which have already been commissioned into service. These ships have been designed and built in accordance with the classification rules of the Indian Register of Shipping, reflecting India’s growing self-reliance in defence manufacturing.

Role and Operational Functions

Sanshodhak is designed to conduct detailed coastal and deep-water hydrographic surveys. It plays a crucial role in mapping port and harbour approaches and identifying safe navigational routes. Additionally, the vessel collects oceanographic and geophysical data, which is vital for naval operations as well as civilian maritime activities such as port development and coastal management.

Advanced Features and Technology

The vessel is equipped with modern hydrographic systems, including data acquisition and processing systems, autonomous underwater vehicles (AUVs), remotely operated vehicles (ROVs), DGPS-based positioning systems, and digital side scan sonar. These technologies enable accurate seabed mapping and data collection in diverse marine conditions.

Important Facts for Exams

• Sanshodhak is the fourth Survey Vessel (Large) built under a 2018 contract.
• It was constructed by GRSE, Kolkata.
• The vessel supports hydrographic surveys and oceanographic data collection.
• It has over 80% indigenous content.

Technical Specifications and Strategic Significance

Sanshodhak has a displacement of about 3,400 tonnes and is powered by two diesel engines, allowing it to achieve speeds exceeding 18 knots. With indigenous content exceeding 80% by cost, the vessel highlights India’s progress in domestic shipbuilding. Its induction enhances maritime domain awareness, safe navigation, and strategic preparedness in India’s coastal and offshore regions.