Nothing. The letters "SOS" are an international distress signal, especially by ships and aircraft, represented by the Morse Code signal (· · · - - - · · ·). It was first adopted by Germany in 1905. Many believe "SOS" signifies "Save Our Ship" or "Save Our Souls." However, these phrases were a later development, most likely to help remember the correct letters -- a backronym.
Source: www.canada.com/nanaimodailynews
Source: www.canada.com/nanaimodailynews
