GMDSS: Element 7

1. A Four satellites in polar orbit.
2. B Four satellites in geo-stationary orbit approximately 22,184 miles above the equator.
3. C Four satellites in geo-stationary orbit for each Inmarsat Service (A, B, C and M).
4. D Through coordinated use of COSPAS-SARSAT satellites.

Tip: press A-D to answer