| CHAPTER | | PAGE | | I. | The Ominous Warning on Shipboard | 13 | | II. | The Torpedoed Ship | 25 | | III. | Prisoners on Board of a Submarine | 37 | | IV. | The Terrors in the Dark Room of an Undersea Boat | 49 | | V. | Some of the Mysteries of a Submarine | 58 | | VI. | Groping Through the English Channel | 68 | | VII. | Caught in the Deep Sea Nets | 78 | | VIII. | The Night's Struggle to Free the Vessel | 89 | | IX. | The Capture of the Submerged Vessel | 99 | | X. | The Secret Key to the Bomb Fuse | 110 | | XI. | Operating the Submarine with a Captive Crew | 120 | | XII. | The Death Blow to the Submarine | 130 | | XIII. | The Rescue in the Channel | 142 | | XIV. | Ten Hours in the Danger Zone | 151 | | XV. | A Frightful Mine Explosion | 161 |
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