American steamship S. S. Arapahoe became the first to use the signal 'SOS' off Cape Hatteras, North Carolina, USA.
The Morse code distress signal 'SOS,' originating from Germany, became the world's official message for help.
The International Radiotelegraph Conference in Berlin selected 'SOS' (· · · – – – · · ·) as the global standard for radio distress calls.
The distress signal 'CQD' was established.