International Hydrographic OrganizationWikipedia short information
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.
The IHO enjoys observer status at the United Nations where it is the recognised competent authority on hydrographic surveying and nautical charting. When referring to hydrography and nautical charting in Conventions and similar Instruments, it is the IHO standards and specifications that are normally used.