GMDSS: Element 7

1. A Typically 50-100 nautical miles (90-180 km) from shore.
2. B Typically upwards of 1000 nautical miles (1800 km) during the daytime.
3. C It is limited to line-of-sight or about 30 nautical miles (54 km).
4. D Typically 200-400 nautical miles (360-720 km).

Tip: press A-D to answer