National Hydrographic Office
107-A, Rajpur Road, Post Box - 75,Dehradun - 248001, Uttarakhand, India
Tel: +91 135 2746290-95; Fax : +91 135 2748373
Be vigilant for counterfeit/ photocopied Chart. Navigational Charts produced after 31 Oct 2014 carry NHO crest as watermark on the reverse with backslip. Chart Agent's stamp is mandatory on all Charts.