Sandhayak-class survey ship (1981)
{{Use dmy dates|date=April 2024}}
{{Use Indian English|date=August 2013}}
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|+Sandhayak class {{Infobox ship image |Ship image=INS Sandhayak (J-18) survey vessel at sea.jpg |Ship caption=INS Sandhayak (J-18) survey vessel at sea. }} {{Infobox ship class overview |Builders=*Garden Reach Shipbuilders and Engineers |Operators={{flag|India|naval}} |Class before= |Class after={{sclass|Makar|survey catamaran|4}} |Subclasses= |Built range= |In commission range= |Total ships building= |Total ships planned=8 |Total ships completed=8 |Total ships cancelled= |Total ships active=5 |Total ships laid up= |Total ships lost= |Total ships retired=3 |Total ships scrapped= |Total ships preserved= }} {{Infobox ship characteristics |Hide header= |Header caption= |Ship type= Hydrographic survey ship |Ship displacement={{convert|1929|LT|t|0}} full |Ship length={{convert|87.8|m|ftin|abbr=on}} |Ship beam= {{convert|12.8|m|ftin|abbr=on}} |Ship draft={{convert|3.3|m|ftin|abbr=on}} |Ship propulsion= |Ship speed= {{convert|16|kn|lk=in}} |Ship range=*{{convert|6000|nmi|abbr=on|lk=in}} at {{convert|14|kn}}
|Ship complement=18 officers + 160 enlisted |Ship armament=1 × Bofors 40 mm gun |Ship aircraft=1 × HAL Chetak helicopter |Ship aircraft facilities=Helipad |Ship notes= }} |
The Sandhayak-class survey ships are a series of eight vessels built by Garden Reach Shipbuilders and Engineers (GRSE), Kolkata and Goa Shipyard, Vasco for the Indian Navy. While Sandhayak, Investigator, Nirdeshak, Nirupak were built in GRSE;{{Cite web|title=GRSE_Coffee Table Book_low.pdf|url=http://grse.gov.in/pdf/GRSE_Coffee%20Table%20Book_low.pdf|access-date=23 February 2017|archive-date=23 February 2017|archive-url=https://web.archive.org/web/20170223214212/http://grse.gov.in/pdf/GRSE_Coffee%20Table%20Book_low.pdf|url-status=dead}} Sarveshak, Jamuna, Darshak, Sutlej were built by Goa Shipyard.Saunders 2002, p. 316.{{cite web|url=https://psuwatch.com/ins-jamuna-progresses-joint-hydrographic-operations-off-sri-lanka|title=INS Jamuna progresses joint hydrographic operations off Sri Lanka|publisher=PSU Watch|date=2020-02-20}} The vessels equipped with four survey motorboats, two small boats and are powered by two diesel engines with a top speed of {{convert|16|kn|lk=in}}. They have a helicopter deck and are also armed with a Bofors 40 mm/60 gun mount for self-defense.
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.{{Cite web|title=Indian navy ship on goodwill visit|url=http://www.nation.sc/article.html?id=218680}}
Working as part of the 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.{{Cite web|title=INS Sarvekshak |url=https://www.hydro-international.com/content/company/ins-sarvekshak}}
Service history
{{INS|Nirdeshak|J19|2}} was decommissioned on 19 December 2014.{{cite web|url=https://www.newindianexpress.com/states/kerala/2014/dec/20/survey-ship-decommissioned-696297.html|title=Survey ship Decommissioned|publisher=New Indian Express|date=2014-12-20}}{{Cite web |title=Fortnightly E-News Brief of National Maritime Foundation |url=http://maritimeindia.org/View%20Profile/635570539074764126.pdf}}
The lead ship of the class {{INS|Sandhayak|J18|2}} was decommissioned on 4 June 2021 after 40 years in service.{{cite web|url=https://pib.gov.in/PressReleasePage.aspx?PRID=1723980|title=INS Sandhayak to be Decommissioned on 04 Jun 21|publisher=PIB|date=2021-06-03}}
The third ship in the class {{INS|Nirupak|J20|2}} was decommissioned after 38 years of service on 29 January 2024 in Visakhapatnam.{{cite news|url=https://www.thehindu.com/news/cities/Visakhapatnam/ins-nirupak-decommissioned-at-visakhapatnam-after-38-years-of-service/article67790480.ece|title=INS Nirupak decommissioned at Visakhapatnam after 38 years of service|first=Sumnit|last=Bhattacharjee|work=The Hindu|date=2024-01-30}}
Ships in the class
Gallery
{{Gallery
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|width=160 | height=170
|File:INS Sandhayak (J-18) at sea.jpg
|{{INS|Sandhayak|J18|2}} at sea.
|File:J19 Survey INS.jpg
|{{INS|Nirdeshak|J19|2}} during a survey mission.
|INS Investigator (J15) at sea.jpg
|{{INS|Investigator|J15|2}} at sea.
|File:Survey tasking being undertaken by Southern Naval Command ships on World Hydrographic Day 2014.jpg
|Survey tasking being undertaken by Southern Naval Command ships {{INS|Jamuna|J16|2}} and {{INS|Sarvekshak|J22|2}} on World Hydrography Day 2014.
|File:INS Sarvekshak (J22) en-route to Mauritius.jpg
|{{INS|Sarvekshak|J22|2}} en-route to Mauritius
}}
See also
- List of active Indian Navy ships
- {{INS|Sagardhwani}}
Citations
{{reflist}}
References
- {{cite book|last=Saunders|first=Stephen |title=Jane's Fighting Ships 2002–2003 |year=2002 |publisher=Jane's Information Group |location=Coulsdon, UK|isbn=0-71062-4328}}
External links
{{commons category|Sandhayak class survey ship}}
- {{cite web |url=http://www.globalsecurity.org/military/world/india/j-sandhayak.htm |title=J 18 Sandhayak class |website=GlobalSecurity}}
- {{cite web |url=http://www.indiannavy.nic.in/naval-fleet/sandhayak-class |title=Sandhayak class |website=Indian Navy |url-status=dead |archiveurl=https://web.archive.org/web/20130729210948/http://www.indiannavy.nic.in/naval-fleet/sandhayak-class |archivedate=29 July 2013 }}
{{external media|topic=Sandhayak class survey ship |float=right|width=200px
|image1=[http://indiannavy.nic.in/sites/default/files/J-18_Sandhayak_1-S.JPG INS Sandhayak]
|image2=[http://www.globalsecurity.org/military/world/india/images/j-17_sandhayak_sutlej_india-navy01.jpg INS Sutlej]
|image3=[http://www.globalsecurity.org/military/world/india/images/darshak_25a.jpg INS Darshak]
|}}
{{Sandhayak-class survey ship}}
{{Ship classes of the Indian Navy}}