Jack gave the necessary command, and the D-16 slowed down perceptibly.
For many minutes there was intense silence, broken at last by Lord Hastings.
“I should say,” he said, “that we must now be in the harbor. I am positive we have passed under the mines safely.”
“Then shall we go up, sir?” asked Frank eagerly.
Lord Hastings hesitated for a moment, and then replied:
“Yes, we may as well.”
Jack took this as a command, and gave the necessary order.
Slowly the D-16 began to rise.
Lord Hastings glanced at his watch.
“Seven o’clock,” he said quietly, “and there should be no moon. A good night for our work.”