Lieutenant William McMaster Murdoch RNR (February 28th, 1873 - April 15th, 1912) was the First Officer aboard the RMS Titanic, which sank in the Atlantic in 1912. Murdoch was on duty that night when he heard the shout: "Iceberg right ahead!", before he famously replied: "Stop engines, hard a-starboard, full astern", and then rang the warning bell.