:::::All it says for the diesel is "Its specification was: 12,000shp, 150rpm, 12kts (one 3-bladed screw, 4.8m diameter). I'd be willing to bet that Groner's records left off at the decision to fit only Markgraf and Grosser Kurfurst with the diesels, and that anything further was lost, perhaps during WWII. Go ahead and fix the article )