Indian Naval Hydrographic Department

Indian Naval Hydro-graphic Department

Military overview
Formed	June 1, 1954 (1954-06-01)
Preceding agencies	Marine Survey of India (1947-1954) Naval Hydrographic Office (1954-1997)
Headquarters	National Hydrographic Office, 107-A, Rajpur Road, Dehradun,  India [1] 30°20′41″N 78°03′29″E / 30.3447888°N 78.0580398°E / 30.3447888; 78.0580398Coordinates: 30°20′41″N 78°03′29″E / 30.3447888°N 78.0580398°E / 30.3447888; 78.0580398
Minister responsible	Manohar Parrikar, Defence Ministry
Deputy Minister responsible	Rao Inderjit Singh, Defence Ministry
Military executive	Rear Admiral Vinay Badhwar, NM, Chief Hydrographer to the Govt. of India [2]
Parent department	Indian Navy
Website	NHO Official

The Indian Naval Hydro-graphic Department (INHD) headed by Chief Hydrographer to the Government of India is an Indian Government agency responsible for hydro-graphic surveys and nautical charting in India. Presently, the department is equipped with eight indigenously built survey ships including a Catamaran Hull Survey Vessel (CHSV). National Institute of Hydrography is the training institute to impart knowledge regarding hydrograph and to train its personnel.

The department is also responsible for making Electronic Navigational Charts officially on behalf of the Government of India. The department has also signed MoU with various countries for surveying their waters as part of international cooperation.^[3]

INS Makar used by INHD for surveys

History

Pre Independence

Th origins of Hydrography in India originated back in 17th century. The first chart of Indian Ocean was compiled by Thorntons of British East India Company in 1703 which is considered as the step towards the development of nautical charts of India. In 1874, the Indian Marine Survey Department was established in Calcutta, later it became a part of Royal Indian Navy.^[4]

Post Independence

After independence in 1947, the department continued its functions under the Surveyor-in-Charge of Marine Survey of India from Bombay.Later the office was shifted to Dehradun by renaming it as Naval Hydrographic Office headed by Chief Hydrographer of the Navy, which was later re-designated Chief Hydrographer to the Government of India in 1964. In view of international role of India in hydrography the office was renamed once again in 1997 as National Hydrographic Office.^[4]

National Hydrographic Office

National Hydrographic Office headed by Chief Hydrographer to the Government of India is the headquarters of Indian Naval Hydrographic Department stationed at Dehradun. It is responsible publication of nautical charts relating to Indian on behalf of the Government.^[4]

Chief Hydrographer to the Government of India

The Chief Hydrographer to the Govt. of India is the executive head of the of Indian Naval Hydrographic Department. The Chief Hydrographer is generally held by a rear admiral or vice admiral from the Indian Navy. The Chief Hydrographer is also the coordinator for charting Area "J" in the North Indian Ocean.^[2][5]

Organisational Structure

The department is headed by Chief Hydrographer, assisted by a Staff Officer. The organisation is further divided into 6 divisions.

Ships

Presently 8 ocean-going survey ships are in service with the department. All these ships belong to Sandhayak class except INS Makar which belong to Makar class

Ships in Sandhayak class

Name	Pennant No.	Date of Commission	Home Port	Crest\ Emblem\ Image
INS Nirupak	J 14	14 August 1985	Vishakapatnam
INS Investigator	J 15	11 January 1990	Mumbai
INS Jamuna	J 16	31 August 1991	Kochi
INS Sutlej	J 17	19 February 1993	Kochi
INS Sandhayak	J 18	14 March 1981	Vishakapatnam
INS Darshak	J 20	28 April 2001	Vishakapatnam
INS Sarvekshak	J 22	14 January 2002	Kochi

Ships in Makar class

Name	Pennant No.	Date of Commission	Homeport	Crest\ Emblem\ Image
INS Makar	J 31	21 Sep 2012	Karwar

References