International Mobile Satellite Organization (imso)

What International Mobile Satellite Organization (imso) does

The International Mobile Satellite Organization (IMSO) is an intergovernmental organization established in 1976 by the International Maritime Organization (IMO), a United Nations specialized agency. The IMSO Convention entered into force in July 1979, and the entity was restructured in 1999 when its commercial operations were separated into Inmarsat Ltd, leaving IMSO as the intergovernmental oversight body for public satellite safety and security communication services. Headquartered in London at the IMO building, IMSO currently has 112 Member States.

IMSO performs two core oversight functions: (1) GMDSS Oversight, acting as the oversight body for satellite communications elements of the Global Maritime Distress and Safety System, with Inmarsat (now part of Viasat) and Iridium as the two IMO-recognized providers; and (2) LRIT Coordination, auditing 71 LRIT Data Centres annually across 123 SOLAS Contracting Governments and supporting ship tracking for roughly 40,000 SOLAS-compliant vessels. Underlying technology includes proprietary audit software and data science tools maintained by IMSO, continuous outage reporting frameworks (24-hour unplanned and pre-planned outage notification), and contingency exercise protocols requiring service providers to restore distress and safety services within one hour. The organization does not sell products or services commercially; it operates on member-state contributions and performs regulatory, audit, and capacity-building functions, including participation in ITU, WMO, IHO, IALA and CTI governance fora.

The business model is non-commercial: funding comes from Member State contributions under the IMSO Convention, and IMSO does not generate revenue from the satellite services or LRIT data flows it oversees. Distribution is institutional, channelled through IMO events, tripartite meetings with EUTELSAT IGO and ITSO, member-state delegation visits, and LRIT training programmes (over 600 SAR operators from 88 countries trained in February 2024). ISO 9001 and ISO/IEC 27001 certifications achieved in November 2025 underscore the operational governance framework that underpins the oversight mandate.

Name

International Mobile Satellite Organization (imso)

Legal name

International Mobile Satellite Organization (IMSO)

Website

https://imso.org

Company type

Private

Founded year

1976

Operating status

Operating

Headcount range

1–10 employees

Short description

IMSO is the intergovernmental organization, established under IMO/UN auspices in 1976, that oversees satellite providers of the Global Maritime Distress and Safety System (GMDSS) and coordinates the Long-Range Identification and Tracking (LRIT) system across 112 Member States.

Ownership category

akta.pro rank

Product category

Maritime Satellite Communications Oversight

NAICS

National Security and International Affairs (928), International Affairs (92812), Regulation and Administration of Communications, Electric, Gas, and Other Utilities (92613)

SIC

Communications Services, Nec (4899), Services-Membership Organizations (8600)

akta.pro primary industry

Humanitarian Coordination & Disaster Risk Reduction IGOs (BPADAAAE)

akta.pro secondary industries

Maritime Cybersecurity & OT Security Compliance (IMO 2021, Port OT) (TLAHANAJ), Disaster Response & Search and Rescue (SAR) (BPADADAA), Marine Navigation Systems (ECDIS, Radar, GNSS, AIS) (IMAJAJAE)

Keywords

• Maritime satellite oversight
• Ship tracking systems
• Distress safety communications
• Intergovernmental regulatory body
• Maritime safety coordination

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Infrastructure

Distribution channels1 record

Marketing channels6 records

Core offering

IMSO is an intergovernmental organization that provides regulatory oversight of satellite communications elements of the Global Maritime Distress and Safety System (GMDSS) and coordinates the Long-Range Identification and Tracking (LRIT) system for ships. The organization audits satellite service providers (Inmarsat Ltd and Iridium Ltd), conducts annual audits of 71 LRIT Data Centres across 123 SOLAS Contracting Governments, and ensures compliance with IMO-established safety criteria through contingency exercises, continuous monitoring, and Public Services Committee meetings.

Product overview

IMSO is an intergovernmental organization that provides two core oversight functions: (1) GMDSS Oversight - monitoring satellite communications providers (Inmarsat and Iridium) that deliver maritime distress and safety services under the Global Maritime Distress and Safety System; and (2) LRIT Coordination - auditing and reviewing the Long-Range Identification and Tracking system for ships. These services are supported by IMSO Docs, a secure document management portal. IMSO does not manufacture products but oversees the satellite communication systems that enable maritime safety worldwide.

Differentiator

Problem solved

Functional benefit

Products and services

• GMDSS Oversight
• LRIT Coordinator
• IMSO Docs

Quantifiable outcome

• 900+ distress alerts transmitted and 500,000+ safety messages broadcast in 2022 through GMDSS
• +3 more outcomes

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration10 records

Feature4 records

Partnerships

16 partnerships are on record, tiered major, core and strategic.

• Commonwealth Telecommunications Organisation (CTO)majorStrategic or Co-development Partner · 28 February 2025MoU signed in February 2025 during CTO Digital Week 2025 to strengthen cooperation in satellite-based safety services and international cooperation, particularly in spectrum preservation.
• IALA (International Association of Marine Aids to Navigation)majorStrategic or Co-development Partner · 18 February 2025IMSO participated in IALA's first Assembly as an IGO, discussing digitalization and satellite communications for maritime navigation safety.
• International Maritime Organization (IMO)coreStrategic or Co-development Partner · 1 January 2006IMO is the UN specialized agency that established IMSO and appointed IMSO as LRIT Coordinator. IMO establishes the regulatory framework for GMDSS and LRIT, while IMSO provides oversight of satellite communications elements and coordinates the LRIT system.
• Inmarsat LtdcoreTechnology or IntegrationInmarsat is the primary recognized mobile satellite service provider for GMDSS. IMSO conducts oversight through Public Services Agreement, including contingency exercises, PSC meetings, and continuous monitoring of service availability.
• Iridium LtdcoreTechnology or IntegrationIridium was recognized by IMO as a GMDSS provider in 2019 following IMSO's technical and operational assessment. IMSO provides ongoing oversight similar to Inmarsat through Public Services Agreement.
• European Maritime Safety Agency (EMSA)majorStrategic or Co-development PartnerEMSA collaborated with IMSO and COMPAAz to deliver LRIT training to Search and Rescue Operators from 88 countries. Joint initiative to enhance maritime safety through improved LRIT utilization.
• Brazilian Maritime Operations and Protection of the Blue Amazon Command (COMPAAz)majorStrategic or Co-development PartnerCollaborated with IMSO and EMSA to deliver LRIT training to Search and Rescue Operators worldwide.
• International Telecommunication Union (ITU)majorStrategic or Co-development PartnerIMSO participates in ITU-R Working Party 4A meetings contributing to WRC-27 preparations. Discussions on spectrum protection for maritime safety services. Director General met with ITU Secretary-General.
• World Meteorological Organization (WMO)majorStrategic or Co-development PartnerIMSO participates in WMO Advisory Group on Worldwide Met-Ocean Information and Warning Service Subcommittee to ensure meteorological information dissemination through satellite communications.
• International Hydrographic Organization (IHO)majorStrategic or Co-development PartnerIMSO participates in WWNWS Sub-Committee meetings held under IHO auspices to enhance navigational warnings dissemination to mariners.
• EUTELSAT IGOmajorStrategic or Co-development PartnerPart of Tripartite arrangement with ITSO to discuss collaborative measures in global satellite telecommunications oversight. Regular meetings held to address shared challenges and strengthen oversight missions.
• International Telecommunications Satellite Organization (ITSO)majorStrategic or Co-development PartnerPart of Tripartite arrangement with EUTELSAT IGO. Regular meetings to discuss collaborative measures in global satellite telecommunications oversight and ensuring coverage and connectivity.
• World Maritime University (WMU)majorStrategic or Co-development PartnerIMSO hosts WMU students for Director General's discourse on maritime satellite services. IMSO DG participates in WMU Board of Governors. Mentorship under IMOGender programme.
• International Maritime Law Institute (IMLI)majorStrategic or Co-development PartnerIMSO Director General delivers guest lectures at IMO-IMLI. Students from IMLI visit IMSO headquarters. Participation in IMOGender mentorship programme.
• Viasat Inc.coreTechnology or IntegrationFollowing Viasat's acquisition of Inmarsat, Viasat+Inmarsat continues as recognized GMDSS provider. IMSO conducts oversight including visits to Viasat/Inmarsat ground stations in Burum, Netherlands.
• BeiDou Message Service System (BDMSS)strategicTechnology or IntegrationBDMSS is being integrated as a GMDSS provider. IMSO and China provided update on BDMSS implementation progress at WWNWS15 meeting. Pending full implementation by IMO.

Scale indicators7 records

Recent moves8 records

Expansion highlights4 records

Market position

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/imso

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds

Investors

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M&A

Investments

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