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The International Mobile Satellite Organization (IMSO) is an intergovernmental organization established by the United Nations International Maritime Organization (IMO) in 1976. IMSO contributes to the safety and security of seafarers and passengers around the world by providing oversight of the satellite providers of the Global Maritime Distress and Safety System (GMDSS) and as the Co-ordinator for the Long-Range Identification and Tracking of Ships (LRIT) system, both established by IMO under the International Convention for the Safety of Life at Sea (SOLAS).

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IMSO Convention

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Member States
form the Advisory
Committee

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Member States

Our Work

GMDSS Oversight

IMSO is the oversight body of the satellite communications elements of the Global Maritime Distress and Safety System (GMDSS) established by IMO and designed to provide a worldwide system for automated emergency signal communication for ships at sea. IMSO ensures that the provision of maritime mobile satellite communications services (currently provided by Inmarsat Ltd and Iridium Ltd) meets the criteria set up by IMO.

LRIT Co-ordinator

IMSO is the Co-ordinator of the Long-Range Identification and Tracking (LRIT) system of ships established by IMO and designed to collect and distribute position information received from around 60,000 ships worldwide that are subject to IMO’s International Convention for the Safety of Life at Sea (SOLAS). IMSO ensures that the system operates properly by undertaking annual audits of all elements of the LRIT system across 119 countries.

Other Activities

IMSO represents its Member States’ interests in relation to the GMDSS and LRIT in global policy-making fora to ensure that these vital systems remain relevant to changing priorities. It also provides expertise and advice on matters relating to IMSO’s mandate at the international and national level to enhance safety and security at sea as well as search and rescue capabilities and standard-setting activities concerning satellite communication systems oversight.

Member States

IMSO has currently 110 Member States.
Membership in the Organization is open to all States, subject to the provisions contained in the Convention on the International Mobile Satellite Organization.

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a Member State

Latest News

IMSO Director General at the London International Shipping Week event

12 September 2023|

IMSO Director General in Saudi Arabia

6 September 2023|

IMSO Technical Officer attends WWNWS15, Monaco

5 September 2023|

Upcoming meetings

49th session
of the IMSO
Advisory Committee

13-17 November 2023

50th session
of the IMSO
Advisory Committee

TBC

29th session
of the IMSO
Assembly

9-13 December 2024

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