All IMO conventions (SOLAS, MARPOL, BWM, Hong Kong, etc.)
What is counted
For each convention, the number of contracting states and the percentage of world merchant tonnage bound by it
Unit
number of states · % of world tonnage
Coverage
current (annual release)
Publisher
International Maritime Organization (IMO)
Sample value from the publisher’s release
For each convention the document lists the entry-into-force date, the number of contracting states and the % of world tonnage
Being a party does not guarantee implementation; a convention with high coverage may still be weakly enforced in practice. It should be read together with port state control data.
How many states each of thirteen conventions binds, year by year
Unit
state parties
Coverage
1971–2015 · 13 conventions
Publisher
United Nations Conference on Trade and Development (UNCTAD) · Our World in Data derlemesi
Sample value from the publisher’s release
585 observations loaded to the platform · 2015: UNCLOS 167, UNFCCC 197, Kyoto 193 parties
Being a party does not guarantee implementation; a convention with wide participation may still be weakly enforced. Being party to a convention does not mean being party to all of its annexes or protocols. The record ends in 2015; for current party counts consult the convention secretariat.
Protected Planet / WDPA — protection status detail (IUCN category, governance type, area geometry)
Bulk download of the detailed records and API access require registration and a key; sources demanding credentials are not connected here. The country-level coverage percentage IS connected, via the World Bank compilation; only the site-level detail remains closed.
Global Fishing Watch — AIS-based fishing effort
API access requires a token.
IMO GISIS — casualty and incident records
The non-public modules require an account, and no machine-readable export of the public subset is published.
