That site has some excellent models, the "Vapor Surubi" looks really promising
If you want a model, click on the 'picture", then "Click" on "Archivo de Graficos' for the .pdf, and "Click" on "Archivo de Instrucciones" for the Instructions. They are all there. Vapor is for "Steam", so it would be the "Steamship Surubi".
Modelismo Naval - Uruguay