The engines of the Inca were started in May 1856, those of the Valparaiso in July 1856.
25 The second and third ships were the paddle-steamers Inca and Val paraiso, for the Pacific Steam Navigation Company.  The engines of the Inca were started in May 1856, those of the Valparaiso in July 1856.  Each of these ships had a pair of engines of that compound class described in patent C; the cylinders were jacketed at top and bottom only, and not round the sides.