RMS Titanic

For the ship in Voyage of the Damned, see Titanic (spaceship).

"I never cared for the word "impregnable". Sounds too much like "unsinkable"."

"What's wrong with "unsinkable"?"

"'Oh, nothing', said the iceberg to the Titanic."

The RMS Titanic was a luxury oceanliner on Earth in the early 20th century and noted as being the largest ship of its time. It is known famously for having been called "unsinkable" and then, on its maiden voyage from England to New York City, collided with an iceberg in the Atlantic Ocean on April the 14th 1912.

Max Capricorn, head of Max Capricorn Cruiseliners, constructed a starship replica of the Titanic for a voyage from Sto to Earth for the observation of "primitive cultures" on Christmas Day, 2008. (DW: Voyage of the Damned)

References

The Doctor claimed that he had nothing to do with the destruction of the Titanic. (DW: The Invasion of Time)
The Doctor persuaded several people to not board the liner, prior to its maiden voyage. (DW: Rose).
The Doctor, Ace and Bernice Summerfield travelled to the Titanic tracking Huitzilin and were on the ship when it collided with the iceberg. (NA: The Left-Handed Hummingbird)