Page:Popular Science Monthly Volume 88.djvu/873

 Take Kindly to Its First Submarine

��The two photographs to the right show respectively the internal operating mechanism and the exterior of Bauer's ill- fated submarine. The boat was propelled by means of pedals and a train of gear wheels and cog wheels. The "Brandtaucher," (Fire Diver) as Bauer's boat was called, made just one trip in Kiel harbor. That was in 1851. The boat foundered, but fortu- nately the crew was rescued. The vessel was not strong enough to stand the pressure of water when submerged. In 1887, thirty-six years later, the govern- ment undertook some dredging in Kiel harbor for the purpose of building a torpedo basin. Bauer's submarine was then discovered, raised and transferred to the

courtyard of the Berlin Naval Museum, where it may now be seen. The submarine is a product of many lands and many minds. Even in ancient times'efforts were made to navigate vessels under water — apparently with little success. Napoleon gave the subject some thought. It was with him that Robert Fulton dealt. The submarine, as we see it, combines the ideas of Bushnell, Fulton, Nordenfeldt, Holland and Lake

����To the left, a German submarine of an early type shown in section. Below, a German submarine of a late type. These late submarines have a radius of action of about 2,000 miles; that is, after having filled their oil tanks they can travel for that distance before it becomes nec- essary to replenish their fuel supply

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