“SOS stands for Save Our Souls”

The idea that SOS stands for "Save Our Souls" is a widespread misconception. While fitting for a distress call, the letters SOS do not actually represent any words. Instead, SOS was chosen as the international maritime distress signal in 1905 by the German government and then adopted globally in 1906 at the first International Radiotelegraph Convention in Berlin (Review), becoming effective in 1908. Its selection was purely practical: its Morse code pattern—three dots, three dashes, three dots (...---...)—is uniquely simple, rhythmic, and unmistakable, making it easy to transmit and recognize even by inexperienced operators or in noisy conditions.

Before SOS, various countries and companies used different and often confusing distress signals, like the British Marconi Company's "CQD" (Come Quick, Danger). The need for a universally understood signal was paramount for maritime safety as radio communication became more common. The simplicity of the SOS Morse code sequence ensured that it could be easily differentiated from other transmissions and understood across all nationalities, a crucial factor in emergencies where clarity could mean the difference between life and death.

The enduring belief that SOS is an acronym like "Save Our Souls" or "Save Our Ship" stems from a natural human tendency to assign meaning to letter combinations, creating what are known as backronyms. These phrases perfectly encapsulate the desperate nature of a distress call, making them memorable and widely accepted by the public. The high-profile use of SOS in real-life emergencies, such as the sinking of the RMS Titanic in 1912, further cemented its association with these evocative phrases in popular culture, despite its technical origins as a non-acronymic Morse code signal.