"What was pretty close?" demanded Frank, who had not heard the sound of the shot. "Didn't we hit either one of them?"
"Oh, yes, we got them both," replied Jack. "I was talking about our own escape. The Germans fired one shell at us and they can't have missed very far. Fortunately, we came down before a second."
"Shape your course due east, Mr. Templeton," commanded Lord Hastings at this juncture. "We'll have a try at another of them."
Jack gave the command.
"Twenty knots!" ordered Lord Hastings.
The U-6 leaped forward beneath the water like a thing alive. For fifteen minutes she sped on and then rose until her periscope showed above the surface.
"As I expected," said Lord Hastings. "The enemy is making for home, but we have outrun them and are now between them and their goal." He gauged the range carefully and then ordered: "No. 2 torpedo!"
Again all was expectancy aboard the submarine as all eagerly awaited the next command. It was not long coming.
"Attention!" the signal board read.
And a moment later came the next command: