"Man overboard!"

In an instant the marine sentry had tumbled two life-preservers over into the water.

With almost the swiftness of telegraphy the cry had reached the bridge. Without stopping to back the engine the big battleship's helm was thrown hard over, and the great steel fighting craft endeavored to find her own wake in the angry waters with a view to going back over it.

Signal men broke out the news to the flagship. The other two great battleships turned and headed back in the interests of humanity.

It seemed almost as though the entire fleet had been swung out of its course by pressure on an electric button.

Officers who were not on duty poured out. The captain was the first to reach the quarter-deck. He strode into the midst of a group of stricken-looking midshipmen.

"Who's overboard!" demanded the commanding officer.

"Hallam, sir——"

"And Darrin, sir——"

"And Dalzell, sir——"