"Then, sir, I propose, within a week, to hand you a wholly satisfactory report," Darrin went on. "I had to put in some time on the ground, and it was necessary to study a new problem. Then came a series of adventures that took me out of the work for a while. But now, sir, I hope to show you something new—results!"
CHAPTER XV
DARRIN SUSPECTS THE GERMAN PLAN
The three shoals selected by Darrin extended over a length of about thirty miles along the coast. It was the center one of these shoals on which he had had previous experience.
Further, it was arranged that Dalzell should, in general, cruise along the lower fifteen miles of this stretch, while the "Grigsby" should cover the upper half. From time to time the two destroyers would meet.
After sending three mine-sweepers and the three patrol boats to the shoals, two craft to each shoal, Darrin saw to it that the other six were assigned to duty in the deeper waters off shore.
Then, with a hearty signal to the "Reed," the "Grigsby" started northward. She steamed by the southernmost shoal, and was passing the second when Darrin was called to the bridge by Ensign Ormsby.
"That patrol boat in there signals that she has made a find, sir, so I have changed the course and am heading in."