Come quick!

Trivial Pursuit question of the day - Titanic was one of the first ships to use what was then the "new" distress call, SOS. So what did it replace? Answer - CQD. CQ had been used for some time previously as an "all stations alert" call, and the D was added to it to mean "distress". SOS was adopted in 1906 on the basis that it was a more easily recognisable pattern in Morse Code.