Memo;Survey of India

Survey of India 
The Survey of India (Hindi: भारतीय सर्वेक्षण विभाग ) is India's central engineering agency in charge of mapping and surveying. Set up in 1767 to help consolidate the territories of the British East India Company, it is one of the oldest Engineering Departments of the Government of India

Indian Naval Hydrographic Department
The Indian Naval Hydrographic Department (INHD) functions under the Chief Hydrographer to the Government of India.  The Department, being the nodal agency for Hydrographic surveys and Nautical charting in India, has a very well established organizational setup.  INHD has nine indigenously built modern survey ships including one Catamaran Hull Survey Vessel ((CHSV) fitted with state-of-the-art surveying equipment and a well established 'National Institute Hydrography' which is recognized as the Centre for Imparting Training in Hydrography' for South East Asia by IHO.

The Indian express;India’s official mapmaker does not recognise Sea of Japan, irks Tokyo