こくさいすいかん 国際水路機関
1. International Hydrographic Organization
Wikipedia definition
2. International Hydrographic OrganizationThe International Hydrographic Organization (IHO) is the inter-governmental organisation representing the hydrographic community. It enjoys observer status at the UN and 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.
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