There is evidence suggesting that an iceberg is not the reason the Titanic sunk. The official report at the time is that the ship sunk in one piece and later split apart on the ocean floor. From https://www.usnews.com/news/national/articles/2008/09/25/the-secret-of-how-the-titanic-sunk  Two government investigations conducted immediately after the disaster agreed it was the iceberg, not any weakness in the ship itself, that caused the Titanic to sink. Both inquiries concluded the vessel had gone to the bottom intact. Blame for the incident fell on the ship's deceased captain, E. J. Smith, who was condemned for racing at 22 knots through a known ice field in the dark waters off the coast of Newfoundland. The case of the Titanic was considered closed.  That account is disputed by some historians:  Titanic's Last Secrets, to be published next month, describes the work of Richie Kohler and John Chatterton, wreck-diving historians who believe two recently discovered pieces of the Titanic's bottom prove the ship's stern never rose high in the air the way many Titanic experts, including Cameron, originally believed. The two divers, whose discovery of a lost German U-boat was chronicled in the book Shadow Divers, say the ship broke up and sank while still relatively flat on the surface—a potential sign of weakness, they believe, that was covered up after the disaster.  There is a strong possibility that the ship was sabotaged. From https://www.smithsonianmag.com/smart-news/coal-fire-may-have-helped-sink-titanic-180961699/  Just after survivors made landfall, several people who worked on the ship’s engines cited a coal fire as the cause of the shipwreck.  The fire supposedly burned at port for weeks. JP Morgan, who built the ship, canceled at the last minute. Insurance on the ship was also supposedly increased just a week before the maiden voyage.