Sign In
Learn bits
Defence & Security
Pradeep Kumar

05/06/21 09:00 AM IST

INS Sandhayak Decommissioned

In news

INS Sandhayak, the Indian Navy's oldest Hydrographic Survey Vessel was decommissioned at Naval Dockyard in Visakhapatnam after serving the nation for 40 glorious years 

Service
  • During her 40 years of illustrious service in the Indian Navy, INS Sandhayak undertook over 200 major hydrographic surveys in Western and Eastern coasts of the Indian peninsula, the Andaman Sea, and surveys in neighbouring countries including Sri Lanka, Myanmar and Bangladesh. 
  • The ship also took part in important operations like  Op Pawan in Sri Lanka, 1987, Op Rainbow for Humanitarian Assistance in the aftermath of the Tsunami in 2004 and the maiden Indo-US HADR Exercise Tiger-Triumph in 2019.
Hydrographic survey
  • Hydrography is the science that measures and describes the physical features of the navigable portion of the Earth's surface and adjoining coastal areas. Hydrographic surveyors study these bodies of water to see what the "floor" looks like. 
  • By mapping out water depth, the shape of the seafloor and coastline, the location of possible obstructions and physical features of water bodies, hydrography helps to keep our maritime transportation system moving safely and efficiently.
  • Multibeam echo sounder beams sweep the seafloor as the ship passes over the survey area.
  • Multibeam echo sounder beams bounce off the seafloor and return to the ship where the depth is recorded.
Source: Indian Express, PIB

More Related Current Affairs View All

14 Aug

ABC of Sterilisation

'The Supreme Court has directed Delhi, Noida, Gurgaon, and Ghaziabad authorities to urgently round up and shift stray dogs to shelters, stressing the need to protect children from

Read More

14 Aug

Post and pre-matric scholarships

'The  Union government is considering revising the parental income limit for eligibility in availing post and pre-matric scholarships administered to students from marginalise

Read More

13 Aug

Working of satellite internet

'Satellite internet is revolutionizing how we connect, extending high-speed access to virtually every corner of the globe, regardless of location.' Imagine getting online from t

Read More

India’s First Ai-Driven Magazine Generator

Generate Your Custom Current Affairs Magazine using our AI in just 3 steps