Frank, not having time to take such a long breath as Jack, because of the suddenness with which he had dived, was the first to come to the surface. He was tossed high on the still angry waves, but by a Herculean effort, the lad managed to keep his head above water. His first thought was of the small boat he had so recently left. Glancing around, he saw it floating, bottom up, about a hundred yards away. He swam rapidly toward it; and as he hurried along, a head suddenly bobbed up directly in front of him. It was Jack, struggling and gasping. Frank swam rapidly to him, and lent what assistance he could. Soon Jack was swimming easily with his friend toward the little upturned boat. They laid hold of the little craft, and after a struggle, succeeded in righting it and clambering aboard, where they sat down, wet and weak, Then, for the first time, Jack turned his eyes toward the spot where so short a time ago had been the German submarine. He saw the mass of floating wreckage. "Gone," he said simply, "and the poor fellows with it." He turned to Frank. "You certainly did a good job. I never knew that you were so handy with a gun." "I am a pretty fair shot," Frank admitted modestly. "But if you had missed the first time--?" began Jack. "I couldn't miss," replied Frank quietly. "I knew that before I pulled the trigger. Some way, I felt certain the bullet would go true. Why, I hardly even aimed." "Well," said Jack, "I'm sure I don't ever want you blazing away at me." "I guess we might as well get away from this spot," said Frank. "I wonder where we are?" Jack stood up in the boat and looked long across the sea. Dawn was just breaking, and in the faint morning light he could see a considerable distance. "No land in sight," he said finally, and sat down again. "At a guess, though, I should say we must still be off the coast of Holland." "Yes; but how are we going to tell which way the coast of Holland is?" "I'm sure I don't know. We'll just have to take a chance at it till the sun comes up, and then we can get our bearings. We'll have to be very careful though, for there are likely to be mines floating about. If we had some oars we could row a bit it would warm us up." But no oars were in sight, either near the boat or among the floating wreckage. "They must be at the bottom of the sea," said Frank, in some despair. "I should have thought to have made them fast." "Never mind that," said Jack. "The question now is, what are we going to do?" "Well, you know as much about it as I do," replied Frank. "What are we going to do?"' "It looks to me as though we should have to drift and take a chance of being, picked up," returned Jack. "Or be blown up by a floating mine," said Frank. "That's a chance we shall have to take," said Jack calmly. "You should have thought of that before you bored a hole through that mine on the submarine."