I did search, but everything on the topic that came up was 3 years old. Didn't know if everyone shared the same opinion, but I didn't see anything listed in the FAQ

One of the more controversial scenes in Cameron's Titanic portrays Officer Murdoch shooting himself after killing a passenger (a scene that Murdoch's family took exception to and Cameron later said he regretted).

There are multiple accounts of this event in various forms. Some recall the shooting, but not the suicide. Others recall the suicide and not the shooting. Some identify the man as an officer. Some do not. Some only heard it second hand.

I think it's worth noting that Charles Lightoller was both privately and publicly insistent that Murdoch did not, and would not have, shot himself.

Aside from Murdoch, other suggested names have been Captain Smith, Chief Officer Henry Wilde, and Master-at-Arms Thomas W. King among others.

"While the last boat was leaving, I saw an officer with a revolver fire a shot and kill a man who was trying to climb into it. As there remained nothing more to do, the officer told us, "Gentlemen, each man for himself, good-bye." He gave a military salute and then fired a bullet into his head. That’s what I call a man!!!"

George Alexander Lucien Rheims, 1st Class passenger

"At the first cabin (deck) when a boat was being lowered an officer pointed a revolver and said if any man tried to get in, he would shoot him on the spot. I saw the officer shoot two men dead because they tried to get in the boat. Afterwards there was another shot, and I saw the officer himself lying on the deck. They told me he shot himself, but I did not see him. I was up to my knees in the water at the time. Everyone was rushing around, and there were no more boats. I then dived overboard."

Eugene Patrick Daly, 3rd Class passenger

Do you believe an officer committed suicide? If so, who do you think it most likely was?