The International Hydrographic Organization (IHO) is an intergovernmental organization that was established in 1921 to ensure that all the world's seas, oceans, and navigable waters are properly surveyed and charted. Its mission is to promote the development of hydrographic surveying and the use of hydrographic information worldwide to enhance safety at sea, protect the marine environment, and support maritime activities.
OurBigBook Wikipedia Bot
Documentation