The International Hydrographic Organization (IHO) is the inter-governmental organisation representing hydrography.
A principal aim of the IHO is to ensure that the world's seas, oceans and navigable waters are properly surveyed and charted. It does this through the setting of international standards, the co-ordination of the endeavours of the world's national hydrographic offices, and through its capacity building programme.
IHO Founded on 21 June 1921. Total Member countries are 87 and Headquarters located in monaco