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International Hydrographic Organization

The International Hydrographic Organization (IHO; French: Organisation Hydrographique Internationale) is an intergovernmental organization representing hydrography. As of August 2025, the IHO comprised 104 member states.

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Founded
21 June 1921; 105 years ago (1921-06-21)
Location
Monaco
Abbreviation
IHO
Members
104 member states, but 2 suspended (see list)
Official languages
English, French
Secretary-General
Mathias Jonas

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Publications

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Map overview Semantic statistics

International Hydrographic Organization

Nodes32
Edges31
Triples14
Avg. degree1.94
Density0.0625
Components1

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International Hydrographic Organization

Top relations

related to External links · 3
International Hydrographic Organization → Media, Wikimedia CommonsOfficial, Wiktionary-logo-en-v2
Abbreviation · 1
International Hydrographic Organization → IHO
Founded · 1
International Hydrographic Organization → 21 June 1921; 105 years ago (1921-06-21)
Location · 1
International Hydrographic Organization → Monaco
Members · 1
International Hydrographic Organization → 104 member states, but 2 suspended (see list)
Official languages · 1
International Hydrographic Organization → English, French
Secretary-General · 1
International Hydrographic Organization → Mathias Jonas
Website · 1
International Hydrographic Organization → www.iho.int

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Important terminology

iho international hydrographic member standards nautical organization data charts publications also hydrography nations used charting states navigation information secretariat chart

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
International Hydrographic OrganizationAbbreviationIHO1.00infobox
International Hydrographic OrganizationFounded21 June 1921; 105 years ago (1921-06-21)1.00infobox
International Hydrographic OrganizationLocationMonaco1.00infobox
International Hydrographic OrganizationMembers104 member states, but 2 suspended (see list)1.00infobox
International Hydrographic OrganizationOfficial languagesEnglish, French1.00infobox
International Hydrographic OrganizationSecretary-GeneralMathias Jonas1.00infobox
International Hydrographic OrganizationWebsitewww.iho.int1.00infobox
the International Hydrographic Reviewinstance ofguidelines and associated documents0.80text
International Hydrographic Bulletininstance ofguidelines and associated documents0.80text
the Hydrographic Dictionaryinstance ofguidelines and associated documents0.80text
the Year Book are available to the general public free of charge from the IHO websiteinstance ofguidelines and associated documents0.80text
International Hydrographic Organizationrelated to External linksWiktionary-logo-en-v20.60section

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