Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 445
cannot stay under very long unless it rests on asandy bottom in comparatively shallow water. Now, a submarine cannot see anything underwater. The commander cannot even see thebow of his own boat, and until he gets nearenough to the surface to poke his periscope outof the water, he is absolutely… … THE BLIMP TYPE OF DIRIGIISLE. is attended with considerable danger; for if heis traveling ahead, his periscope will show a wakewhich will betray his presence, and he runs achance of being destroyed before he can diveagain to a safe depth or before he can bring hisdeck guns to bear. Because of this…
Children's literature
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