Two were launched in 1875

The Kaiser Max class of ironclad warships was a group of three casemate ships built for the Austro-Hungarian Navy in the 1870s: Kaiser Max, Don Juan d'Austria, and Prinz Eugen. The three ships were ostensibly the same vessels as the earlier Kaiser Max class, though they were in fact entire new vessels. Only parts of the earlier ships' machinery, armor plating, and other equipment were reused in the new ironclads. The ships were all laid down in 1874; the first two were launched in 1875 and completed in 1876, while work on Prinz Eugen proceeded much more slowly. She was launched in 1877 and completed in 1878. The three ships were armed with a battery of eight 21-centimeter (8.3 in) guns mounted in a central, armored casemate, and were capable of a top speed of 13.28 knots.

The Kunze-Knorr brake is an automatic compressed-air brake for goods, passenger and express trains. It was the first graduated brake for goods trains in Europe. When it was introduced after the First World War, goods train brakes switched from hand operation to compressed-air in various European countries. The Deutsche Reichsbahn alone put the cost of equipping German goods wagons with Kunze-Knorr brakes between 1918 and 1927 at 478.4 million Reichsmarks. The operating cost savings from faster goods services and having fewer brakemen was assessed by the Reichsbahn at almost 96.3 million Reichsmark annually.