Topical matters

Maritime Resource Name (MRN)

Welcome to the Maritime Resource Name (MRN) portal site. This page provides up-to-date information about Maritime Resource Names and their usage within the maritime industry. IALA welcomes comments and contributions by emailing us directly at the technical manager, .

What is it?

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.

R1023 Maritime Resource Names

G1143 Unique Identifiers for Maritime Resources

Application Process

Assignment of Organization IDs is mainly reserved for maritime standards development organizations, research projects, scientific societies, and similar bodies. The detailed procedure is defined in the IALA Guideline G1164.

G1164 Management of MRN Organisation Identifiers

Maritime Resource Name

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 DateRegistering organizationcontact

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


Minsu Jeon


 International Hydrographic Organization (IHO)

Yong Baek




Maritime Connectivity Platform Consortium

Thomas Steen Christensen


GS1 Global Office

Jaco Voorspuij


Manage Information Seamlessly in Ports and Hinterlands (MISSION)

Anisa Rizvanolli

International Port Collaborative Decision Making Council (IPCDMC)

Michael Bergmann


Sea Traffic Management (STM)

Fredrik Karlsson

urn:mrn:nlp:2020-03-20Navelink Industry Consortium
Tobias Axelsson
urn:mrn:kor:2020-03-27The Ministry of Oceans and Fisheries, Republic of Korea (MOF)
Sunbae Hong
urn:mrn:iehg2023-03-11The Inland ENC Harmonization Group (IEHG)
Denise LaDue,
Bernd Birklhuber
urn:mrn:fin2023-03-11Finnish Transport and Communications Agency Traficom https://www.traficom.fiStefan Engström / Mikko Hovi /