Errors regarding to Steam Loco 7050/7500
First error is in the game: this engine is marked as Model 8700 2-C. From the stats, this looks like Model 7050 shown on page 9 of readme.pdf.
Second error is in the readme.pdf. In page 8, the image shows this engine as model 7500, and the description says this is an American built heavy freight engine, which matches the descriptions I see on https://ja.wikipedia.org/wiki/%E5%9B%BD%E9%89%847500%E5%BD%A2%E8%92%B8%E6%B0%97%E6%A9%9F%E9%96%A2%E8%BB%8A. The picture, however, looks closer to Model 7050 - https://ja.wikipedia.org/wiki/%E5%9B%BD%E9%89%847050%E5%BD%A2%E8%92%B8%E6%B0%97%E6%A9%9F%E9%96%A2%E8%BB%8A. 7050 is a passenger locomotive, built by North British Locomotive - the stats matches this guy.