48F3 D
 Which GMDSS equipment is best suited to simultaneous long-range communications with an RCC/coast station and OSC vessels or SAR aircraft?
A. MF-HF SITOR (NBDP) transmitters using telex follow on frequencies.
B. Inmarsat Signals routed via the RCC to the SAR vessels & aircraft under their control.
C. VHF transmitters to reach SAR aircraft and OSC vessels as well as the RCC/coast station.
D. MF-HF SSB transmitters using voice follow-on frequencies.
