Which of the following are the MF/HF DSC Distress watch frequencies

Correct Answer: Option C — 2187.5, 4207.5, 6312.0, 8414.5, 12577.0, 16804.5

ITU-R M.541 and IMO GMDSS standards mandate these specific frequencies for MF/HF DSC distress alerting. These frequencies are globally reserved to ensure that digital distress alerts are received by coast stations and other vessels across the MF and HF bands, facilitating reliable long-range distress communication coverage.