Monitoring Service Using Geostationary Satellites 
(Inmarsat-C, D)

INMARSAT C and D are low-power communication systems that have been used for a long time in both maritime and land-based applications, optimized for message transmission, position reporting, and safety alerts.

Monitoring Service Using Geostationary Satellites (Inmarsat-C, D) 

INMARSAT C and D are low-power communication systems that have been used for a long time in both maritime and land-based applications, optimized for message transmission, position reporting, and safety alerts.

Inmarsat C

Inmarsat is a global satellite communication service provider established in 1979.
It offers reliable satellite communication across maritime, aviation, and land-based sectors worldwide and is internationally recognized for its role in maritime safety communications and vessel tracking services.
Now privatized and headquartered in London, it plays a central role in marine safety and distress alert communication infrastructure.


Inmarsat C VMS Service Use Cases


  • Location signal transmission for government-chartered vessels linked to the Ministry of Oceans and Fisheries' GCOMS system
  • Poll test service to verify LRIT equipment operation on foreign-flagged vessels
  • General vessel VMS service
  • LRIT testing

Inmarsat C & TCU


  • The Terminal Control Unit (TCU) manages the overall operation of the Inmarsat-C terminal.
  • Users can modify system settings and check communication logs.
  • It also monitors data tampering on the vessel.


Inmarsat D (IsatData Pro) / Orbcomm  


Orbcomm is a global IoT solutions provider that operates 31 low-Earth orbit (LEO) satellites and 16 gateway Earth stations to deliver stable and efficient satellite communication services.
Through a strategic partnership with Inmarsat, Orbcomm also offers IsatData Pro (IDP) services, providing clients with diverse satellite communication options.

Orbcomm Antenna


Company Name : Suncom Co., Ltd.
Business Registration Number : 606-81-95871
CEO : Ko Tae-hoon

Phone : +82-51-337-3041
Fax : +82-51-337-3060
Address : #602, 111, Hyoyeol-ro, Buk-gu, Busan, Republic of Korea

Ⓒ Copyright 2025 SUNCOM CO., LTD. All Rights Reserved

Company Name : Suncom Co., Ltd.  │ Business Registration Number : 606-81-95871  │ CEO : Ko Tae-hoon

Phone : +82-51-337-3041 │ Fax : +82-51-337-3060  │ Address : #602, 111, Hyoyeol-ro, Buk-gu, Busan, Republic of Korea

Ⓒ Copyright 2025 SUNCOM CO., LTD. All Rights Reserved