Data Modelling

Welcome to the Maritime Resource Name (MRN) Registry hosted by IALA. This page provides up to date information about Maritime Resource Names and the usage of them within the maritime industry. IALA welcomes comments and contributions either by signing up to our discussion group at!forum/mrn-discuss or by emailing us directly at .


What is Maritime Resource Name

Maritime Resource Name (MRN) is a naming scheme that can uniquely identify any maritime resource on a global scale. By maritime resource, it means anything that has an identity of some kind. This could be organizations, employees, a person, a physical or a virtual object, for instance an electronic document, a buoy, a ship, a mariner, a nautical chart or an electronic service (e.g., “today’s weather report for the Oresund Strait”). Not all resources are “retrievable” in an electronic sense; For example, human beings, corporations, and buoys. However, they can still be considered a resource.

Link for the IALA Guideline on G1143 Unique Identifiers for Maritime Resources Ed 1.0 June 2019


Application Process

Assignment of Organization IDs is mainly reserved for maritime standards development organizations, research projects, scientific societies, and similar bodies. However, anyone can apply and each application is evaluated on a case by case basis by the IALA secretary.

If you wish to apply for an Organization ID please fill out a form similar to this and send it to We will then get back to you with more details.


Management of MRNs

IALA expects to present a paper about how to manage namespaces within organizations in a consistent manner. This will also include guidelines and best practices for developing organization specific namespaces.


Who is using it and what for

IALA is currently getting some experience using MRNs in the following projects identification of users, organizations and services identification of organizations, services and voyages

http://www.smartnav.orgFor identification of users

? Vessel Shore Reporting Service utilized within S-100 product specifications

Readers may send feedback about errors, omissions, and ambiguities on this page to


List of Organization IDs

ISO 3166 country codes Alpha 2 and 3 are reserved in OID. 


Organization IDs  Date Registering organization contact
urn:mrn:iala: 2017-07-30

International Association of Marine Aids to Navigation and Lighthouse Authorities (IALA)

Minsu Jeon

urn:mrn:iho: 2018-04-04

 International Hydrographic Organization (IHO)

Anthony Pharaoh




Maritime Connectivity Platform Consortium

Thomas Steen Christensen

Urn:mrn:gs1: 2018-10-30

GS1 Global Office

Jaco Voorspuij

urn:mrn:mission: 2019-2-01

Manage Information Seamlessly in Ports and Hinterlands (MISSION)

Anisa Rizvanolli
urn:mrn:ipcdmc: 2019-06-26

International Port Collaborative Decision Making Council (IPCDMC)

Michael Bergmann

urn:mrn:stm: 2019-03-28

Sea Traffic Management (STM)

Fredrik Karlsson

urn:mrn:nlp: 2020-03-20 Navelink Industry Consortium
Tobias Axelsson
urn:mrn:kor: 2020-03-27 The Ministry of Oceans and Fisheries, Republic of Korea (MOF)
Sunbae Hong