2012- Costa Concordia's Captain uses lifeboat radio communications, setting new protocols on ensuring the ships Captain and crew remain safe. Experts say this new use of lifeboat communications will have the effect of saving the lives of countless ships Captains involved in maritime disasters. (There was no comment on the safety of the passengers.)
The ss California passed within sight of the titanic and could not be alerted as the radio operator had finished his shift for the day. One of the improvements that came out this was having ships fitted with a device called the international auto alarm which could be activated my a signal by a distressed vessels radio operator, and ringing a large alarm bell on ships over a wide ocean area, thus calling out the radio operator who was off watch and alerting ships able to assist. Before the age of satellite communication this system workd for many years and saved many lives. .....Been there, done that.
I'm sure they did, what about the passengers?