Titanic conspiracy theories
On April 14, 1912, the Titanic collided with an iceberg, damaging the hull's plates below the waterline on the starboard side, causing the front compartments to flood. The ship then sank two hours and forty minutes later, with approximately 1,496 fatalities as a result of drowning or hypothermia.
Source: Wikipedia — Titanic conspiracy theories (CC BY-SA 4.0)