It Wasn't the Captain
At the time of the collision with the iceberg, Captain Edward J. Smith was already in bed. First Officer William McMaster Murdoch was left at the helm. He was the one who had to make the call to turn the engines off to avoid the collision. Sadly, it was already too late by the time everything was set in motion.
Captain Edward J. Smith
Captain Edward J. Smith had a long career as a captain before his time on the Titanic. He was previously working on the RMS Olympic, the Titanic's sister ship. His last words were: "Well boys, do your best for the women and children, and look out for yourself."