“May I make a suggestion, sir?” questioned Dan, touching his cap.

“Certainly; what is it?”

“I got a quick bearing when the mine went over.”

“You did?”

“Yes, sir.”

“What was it?”

“Taking the bearing from our present position, a line drawn from the lighthouse to the battleship, crossed by a line from our wherry to that bluff yonder, would mark the location of the mine at the crossing point, sir.”

The ensign glanced at the young seaman quizzically.

“Very well done, my lad. You have the making of a first-class navigator in you. Keep on and you will do well. Always use your eyes, and your head as well, as you have done this afternoon and there will be no doubt about it.”

“Thank you, sir,” answered the boy, his face glowing with pride.