Jack raised his voice in a shout.
"Help!" he cried in German.
There was no move aboard the German vessel to indicate that the lad's cry had been heard.
"Told you so," said Frank.
"Don't cry too soon, youngster," said Harris. "We'll try it again, and all yell together."
They did and this time their cries were heard.
Several men aboard the German vessel stopped their rushing about and gazed across the sea in the direction of the swimmers. One man produced a glass and levelled it in their direction. Then he turned to the others and they could be seen to gesticulate excitedly.
"One wants to save us and the others don't," declared Frank.
For some moments the men continued to argue. One shook his finger in the faces of the others and pointed in the direction of the swimmers.
"You're all right," declared Frank, speaking of the one man. "Wish I were there to lend you a hand. But I'm afraid the others are too much for you."