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What is the News?
The Indian Navy has launched Sandhayak, a survey vessel, in Kolkata.
What is Sandhayak?
‘Sandhayak’ is one of the first of the four Survey Vessels (Large) projects being built for the Indian Navy.
Developed by: Defence Public Sector Undertaking, Garden Reach Shipbuilders and Engineers (GRSE) Limited.
Purpose:
- To conduct a full-scale coastal and deep-water hydrographic survey of ports and harbors and determination of navigational channels and routes.
- To collect oceanographic and geophysical data for defense as well as civil applications and
- To perform roles such as Search and Rescue and Disaster Relief, besides serving as hospital ships with limited facilities during emergencies.
Name: The ship has taken its name from the first ship of the erstwhile Sandhayak-class survey ships.
Features: The vessel will have over 80% indigenous content. It is also propelled by two marine diesel engines combined with fixed pitch propellers and fitted with bow and stern thrusters, enabling it to manoeuvre at a low speed during surveys.
Source: This post is based on the article “First of the four ships under Survey Vessel (Large) project for Indian Navy launched in the presence of Raksha Rajya Mantri at GRSE, Kolkata” published in PIB on 5th December 2021.



