rd to this invention may be length to ride several waves at once, and thus avoid pitch- tained; and, although the vessel is very long, it may be ma- obtained by addressing Mr. A. Olsen, 181 Richard street, ing, and having breadth of beam sufficient to prevent roll- neuvered as readily as shorter… … oped a rolling friction of only four or five pounds per ton, paddle wheels to revolve in a plane parallel with the length OLSEN'S PONTON STEAMEB.-MANEXTVEEING. or actually only half that given in engineering note books. of the vessel, or at right angles thereto, as shown in Pig. 2, or, if…
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