< Page:Popular Science Monthly Volume 91.djvu
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On Board a United States Super-Dreadnought
���Above: Signaling on the bridge of the North Dakota. The semaphore is making the letter "U." Signalmen are wig-wagging and hauling down flags
��At left: The military or fire-control mast is made of steel tubing so that one successful shot can not carry it away. Notice the searchlight platform
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