The Illustrious Prince by E. Phillips Oppenheim

There was a little murmur of regret amongst the five hundred and eighty-seven saloon passengers on board the steamship Lusitania, mingled, perhaps, with a few expressions of a more violent character. After several hours of doubt, the final verdict had at last been pronounced. They had missed the tide, and no attempt was to be made to land passengers that night. Already the engines had ceased to throb, the period of unnatural quietness had commenced. Slowly, and without noticeable motion, the great liner swung round a little in the river.

A small tug, which had been hovering about for some time, came screaming alongside. There was a hiss from its wave-splashed deck, and a rocket with a blue light flashed up into the sky. A man who had formed one of the long line of passengers, leaning over the rail, watching the tug since it had come into sight, now turned away and walked briskly to the steps leading to the bridge. As it happened, the captain himself was in the act of descending. The passenger accosted him, and held out what seemed to be a letter.