The Sandhayak-class survey ships are a series of eight vessels built by Garden Reach Shipbuilders and Engineers (GRSE), Kolkata and Goa Shipyard, Ltd., Vasco for the Indian Navy. While Sandhayak, Investigator, Nirdeshak, Nirupak were built in GRSE;[1] Sarveshak, Jamuna, Darshak, Sutlej were built by Goa Shipyard.[2][3] The vessels equipped with four survey motorboats, two small boats and are powered by two diesel engines with a top speed of 16 knots (30 km/h; 18 mph). They have a helicopter deck and are also armed with a Bofors 40 mm/60 gun mount for self-defense.
_survey_vessel_at_sea.jpg) INS Sandhayak (J-18) survey vessel at sea.
| |
| Class overview | |
|---|---|
| Builders | |
| Operators |  India |
| Succeeded by | Makar class |
| Planned | 8 |
| Completed | 8 |
| Active | 5 |
| Retired | 3 |
| General characteristics | |
| Type | Hydrographic survey ship |
| Displacement | 1,929 long tons (1,960 t) full |
| Length | 87.8 m (288 ft 1 in) |
| Beam | 12.8 m (42 ft 0 in) |
| Draft | 3.3 m (10 ft 10 in) |
| Speed | 16 knots (30 km/h; 18 mph) |
| Range | |
| Complement | 18 officers + 160 enlisted |
| Armament | 1 × Bofors 40 mm gun |
| Aircraft carried | 1 × HAL Chetak helicopter |
| Aviation facilities | Helipad |
The ships are equipped with variety of next-generation surveying systems fitted onboard including multi-beam swath echo sounding system, differential GPS, motion sensors, sea gravimeter, magnetometer, oceanographic sensors, side scan sonars, automated data logging system, sound velocity profiling system, digital survey and processing system, amongst others.[4]
Working as part of Indian Naval Hydrographic Department the Sandhayak-class survey ships are equipped with a range of surveying, navigational and communication systems. The ships are designed to undertake shallow coastal and deep oceanic hydrographic survey and collect oceanographic and geophysical data required for the production of digital navigational charts and publications. Besides carrying out their primary role of hydrographic survey, they can also assist in times of war and natural calamities as troop transports and casualty holding ships. The ships are also equipped with ROV, AUV & USV.[5]
Service history
editNirdeshak was decommissioned on 19 December 2014.[6][7]
The lead ship of the class Sandhayak was decommissioned on 4 June 2021 after 40 years in service.[8]
The third ship in the class Nirupak was decommissioned after 38 years of service on 29 January 2024 in Visakhapatnam.[9]
Ships in the class
edit| Name | Pennant No. | Builder | Commission | Decommission | Homeport | Status |
|---|---|---|---|---|---|---|
| Batch I | ||||||
| Sandhayak | J 18 | GRSE | 14 March 1981 | 4 June 2021 | Visakhapatnam | Decommissioned |
| Nirdeshak | J 19 | 4 October 1982 | 19 December 2014 | |||
| Nirupak | J 20 | 14 August 1985 | 29 January 2024 | |||
| Investigator | J 15 | 11 January 1990 | — | Kochi[10] | Active | |
| Jamuna | J 16 | 31 August 1991 | — | |||
| Sutlej | J 17 | 19 February 1993 | — | |||
| Batch II | ||||||
| Darshak | J 21 | Goa Shipyard Limited | 28 April 2001 | — | Visakhapatnam[11] | Active |
| Sarvekshak | J 22 | 14 January 2002 | — | Kochi[12] | ||
Gallery
edit-
Sandhayak at sea. -
Nirdeshak during a survey mission. -
Investigator at sea. -
Survey tasking being undertaken by Southern Naval Command ships Jamuna and Sarvekshak on World Hydrography Day 2014. -
Sarvekshak en-route to Mauritius
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_en-route_to_Mauritius.jpg)
See also
editCitations
edit- ^ "GRSE_Coffee Table Book_low.pdf" (PDF). Archived from the original (PDF) on 23 February 2017. Retrieved 23 February 2017.
- ^ Saunders 2002, p. 316.
- ^ "INS Jamuna progresses joint hydrographic operations off Sri Lanka". PSU Watch. 20 February 2020.
- ^ "Indian navy ship on goodwill visit".
- ^ "INS Sarvekshak".
- ^ "Survey ship Decommissioned". New Indian Express. 20 December 2014.
- ^ "Fortnightly E-News Brief of National Maritime Foundation" (PDF).
- ^ "INS Sandhayak to be Decommissioned on 04 Jun 21". PIB. 3 June 2021.
- ^ Bhattacharjee, Sumnit (30 January 2024). "INS Nirupak decommissioned at Visakhapatnam after 38 years of service". The Hindu.
- ^ "Kochi to be home for survey ship INS Investigator". OnManorama. 30 May 2019.
- ^ "Navy deserter caught at the Mumbai airport". mid-day. Retrieved 9 June 2016.
- ^ "Kashmir students arrive in Kochi on a goodwill visit". The Hindu. 18 September 2011. ISSN 0971-751X. Retrieved 9 June 2016.
References
edit- Saunders, Stephen (2002). Jane's Fighting Ships 2002–2003. Coulsdon, UK: Jane's Information Group. ISBN 0-71062-4328.
External links
edit
- "J 18 Sandhayak class". GlobalSecurity.
- "Sandhayak class". Indian Navy. Archived from the original on 29 July 2013.
| External images | |
|---|---|
| Sandhayak class survey ship | |
 INS Sandhayak | |
| INS Sutlej | |
| INS Darshak |
