Inmarsat Fleet Broadband · GMDSS
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“Inmarsat fleet broadband data coverage anywhere at sea Support the Inmarsat Fleet Xpress system 1.Standard IP Up to 432 kbps (FELCOM501)”
| GMDSS radio survey | annual, per SOLAS Ch IV / flag state requirement |
|---|---|
| Battery backup load test | typically every 6-12 months - confirm against the vessel's radio maintenance procedure |
| Firmware/software and subscription check | at each annual survey and after any provider-notified update |
| Antenna dome visual inspection | annual, or sooner after heavy weather or ice |
| Cabling and connector inspection | annual, as part of the radio survey |
GMDSS equipment is surveyed annually under the Radio Survey (SOLAS Ch IV); the surveyor checks the radio log for required periodic tests, confirms battery capacity by test rather than voltage reading alone, and verifies that all GMDSS equipment listed on the ship's Safety Radio Certificate is fitted and functional.
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