The movie is a real life story, about a ship in the ocean Atlantic that collides
with an iceberg, causing it to sink. This happened on April 14 to 15 in 1912
After the crash a few were left in shipwreck waiting for a
rescue, but many died of hipotermia.
Probable causes
the cause is not known exactly but it is believed that
there could be two causes
It´s believed that was a fire on the ship, damaging several
systems
It´s believed that was not enough fuel
on the ship to continue the journey, so they
took a shortcut