How and why does it titanic sink?

The immediate cause of RMS Titanic's demise was a collision with an iceberg that caused the ocean liner to sink on April 14–15, 1912. While the ship could reportedly stay afloat if as many as 4 of its 16 compartments were breached, the impact had affected at least 5 compartments.

It was hit by an iceberg

Explanation:

The immediate cause of the titanic sink was a collision with an iceberg that caused the ocean liner to sink. 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.

From the beginning, some blamed the Titanic's skipper, Captain E.J. Smith, for sailing the massive ship at such a high speed (22 knots) through the iceberg-heavy waters of the North Atlantic. Some believed Smith was trying to better the crossing time of Titanic's White Star sister ship, the Olympic.

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