The pumps will buy you time, but minutes only. From this moment on, no matter what we do, Titanic will founder.

Thomas Andrews: The pumps will buy you time, but minutes only. From this moment on, no matter what we do, Titanic will founder.
Ismay: But this ship can’t sink!
Thomas Andrews: She is made of iron, sir. I assure you, she can. And she will. It is a mathematical certainty.