The navigational status indicator was added to several messages in NMEA 4.10.
Navigational status was added to the following messages in NMEA 4.10:
| Message ID | Description |
|---|---|
| GNS | Global Navigation Satellite System |
| RMC | Recommended Minimum GNSS Data |
| Navigational Status | Description |
|---|---|
| C | Caution |
| S | Safe |
| U | Unsafe |
| V | Void (not valid) |