Page:Popular Science Monthly Volume 89.djvu/816

 A Detachable ConninLT Tower Lessens Submarine Risks

���The entire crew get into the conning tower, detach it from the body of the submarine, and regulate by the windlasses, the speed of the ascent of the tower as its buoyancy raises it to the surface where it signals for help. The body of the submarine can be recovered by means of the cables

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