And an English battleship was at the bottom of the sea.

CHAPTER VI

Frank picked himself up from the chair into which he had fallen because of the sudden lurching of the vessel.

"What was that?" he asked in alarm. "Have we been, hit?"

"I fear there is no such luck," replied Jack. "What, I am sure, is the answer to the German torpedo."

"What do you mean?"

"The lurching of this vessel was caused by the explosion of the torpedo when it struck the British battleship."

"But wouldn't we have heard the explosion?"

"No; there is no sound under water."