Thanks for the info, Dale! Has anyone visited the remains of the gunboat? From photos, her cylinders appear to be horizontally oriented. From British sources, it appears that a horizontal orientation was used to lower the mechanism in the hull to prevent damage in naval vessels. The problem was that maintenance on such engines was more difficult. If she actually made 12 knots, then I'd consider her engines successful. As to the question about her boiler. I believe it was replaced by one salvaged from the ironclad Raleigh. Guess they didn't want to take the chance of trying to repair the original.