The terrestrial system of GMDSS consists of（）.
- Aradio-telephony, DSC, Direct Printing Telegraphy,Navtex and SART
- BINMARSAT, DSC, Direct Printing Telegraphy, Navtex and SART
- Cradio-telephony,DSC,EPLRB,Navtex and SART
- DStatus Recording system,DSC,Direct Printing Telegraphy, Navtex and SART