the rms titanic sank in the early morning hours of 1 5 april 1 9 1 2 in the north atlantic ocean, four days into her maiden voyage from southampton to new york city. the largest ocean liner in service at the time, titanic had an estimated 2, 2 2 4 people on board when she struck an iceberg at around 2 3 : 4 0 ( ship's time ) [ a ] on sunday, 1 4 april 1 9 1 2. her sinking two hours and forty minutes later at 0 2 : 2 0 ( ship's time ; 0 5 : 1 8 gmt ) on monday, 1 5 april, resulted in the deaths of more than 1, 5 0 0 people, making it one of the deadliest peacetime maritime disasters in history.