What was the name of the ship that famously sank in 1912 after hitting an iceberg?

The RMS Titanic is renowned for its tragic sinking in April 1912 after it collided with an iceberg during its maiden voyage from Southampton to New York City. The Titanic was touted as an "unsinkable" ship due to its advanced safety features and construction, which only amplified the shock and public fascination following the disaster. The event was a significant maritime tragedy, leading to changes in international maritime laws regarding safety and lifeboat regulations, and it has been the subject of numerous books, films, and documentaries.

In contrast, the SS Britannic was a sister ship to the Titanic, but it sank during World War I after hitting a mine; it was built later and had different circumstances surrounding its fate. The MS Estonia was a modern ferry that sank in 1994, and the MV Costa Concordia capsized in 2012. Neither of these events is connected to the Titanic’s historical significance or its fate. Thus, RMS Titanic is the most historically significant ship associated with the event described in the question.