It was a strange symptom, and the odd part of it was that everything was so distinct.
Even the smell.

He stared harder, in the hope that his surroundings would give place to the usual ones, and, leaning a little bit more on his elbow, nearly rolled out of the bunk.

Resolved to probe this mystery to the bottom he lowered himself to the floor and felt distinctly the motion of a ship at sea.
There was no doubt about it.

He staggered to the door and, holding by the side, looked on to the deck.

The steamer was rolling in a fresh sea and a sweet strong wind blew refreshingly into his face.