Science teacher Lawrence Beesley was reading a book in his cabin on the Titanic when the engines stopped. Wandering the ship, he heard that an iceberg had passed by but found nothing amiss. But as he was returning to his cabin he noticed something unusual:

As I passed to the door to go down, I looked forward again and saw to my surprise an undoubted tilt downwards from the stern to the bows: only a slight slope, which I don’t think any one had noticed, — at any rate, they had not remarked on it. As I went downstairs a confirmation of this tilting forward came in something unusual about the stairs, a curious sense of something out of balance and of not being able to put one’s feet down in the right place: naturally, being tilted forward, the stairs would slope downwards at an angle and tend to throw one forward. I could not see any visible slope of the stairway: it was perceptible only by the sense of balance at this time.

When the crew began to summon passengers, he returned to A Deck and was accepted on a lifeboat.

(From his 1912 book The Loss of the S.S. Titanic.)