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Today in History: CQD Designated as New Distress Signal by Marconi

1/7/2026

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Summary

Story summary

On January 7, 1904, the Marconi International Marine Communication Company designated CQD as the official distress signal for its operators. This decision aimed to standardize emergency communication at sea, enhancing safety for maritime navigation. The CQD signal would later evolve into the more widely recognized SOS distress signal.

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Story summary

On January 7, 1904, the Marconi International Marine Communication Company designated CQD as the official distress signal for its operators. This decision aimed to standardize emergency communication at sea, enhancing safety for maritime navigation. The CQD signal would later evolve into the more widely recognized SOS distress signal.