Immediately the D-16 had again submerged, Lord Hastings summoned Jack, Frank and the captured German officer to his quarters. Here, after motioning all to seats, he addressed the German commander.
“Captain,” he said quietly, “you are now aboard a British submarine that is about to attempt a passage of the Kiel canal.”
“What!” exclaimed the German officer, jumping to his feet. “It is impossible!”
“You are mistaken, sir,” replied Lord Hastings calmly. “With your help, I should say that it would be a matter of little moment.”
“With my help?” inquired the German officer.
“Exactly. You shall give us your assistance.”
“But, sir——” began the German.
Lord Hastings interrupted him with a wave of his hand.
“Protests will do no good,” he said quietly. “I take it that you are familiar with the locations of the mines and other danger points in and guarding the entrance to the canal. Am I right?”
The German officer bowed his head in assent.