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IHO S-100 / S-101 ENC (International Hydrographic Organization)

Information Model Maritime

A principal Aim of the IHO is to ensure that all the world's seas, oceans and navigable waters are surveyed and charted....

International Hydrographic Organization, from their own meta description

What I make of it

Named “Universal Hydrographic Data Model” — the maritime counterpart to ISO 19100.

Other maritime data models

IMO Reference Data Model / FAL Compendium (International Maritime Organization) Information Model
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Model Details
Steward International Hydrographic Organization
Origin International Monaco
Layer Information Model
Domain Maritime
Status live
Access Not yet established
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How I know this

Compiled for the API Evangelist data model catalog, then confirmed against the steward's own site.

Confirmed 2026-08-11

Evidence: name evidence 3/4. Found something wrong? Tell me — corrections are cheap and I would rather be right.

Modernity Profile
Access Not established
Assessed 17.0% of the rubric

Not enough of this standard was readable to place it in a band. That is a limit of what I could see, not a finding against the standard.

A separate measure from the Kin Score, which rates API providers. This rates how current a standard is in how it is expressed, published and paid for — not how good it is. EDIFACT and X12 score low here and move an enormous share of world trade.

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