The four modern German capital ships need to be compared as one development sequence rather than as isolated classes. Even basic commonality is difficult to establish because sources disagree about whether all four used the same boilers. Their turbines definitely came from different suppliers: Scharnhorst and Tirpitz used Swiss Brown, Boveri machinery, Gneisenau used Germania equipment, and Bismarck used machinery from Blohm and Voss. The foreign purchase is striking for vessels intended to embody German naval power. It also helps explain why nominal sister ships could develop different endurance and support requirements.
Notable Point · 25:58-27:46
Foreign turbines inside Germany's capital-ship program
Scharnhorst and Tirpitz used Swiss Brown, Boveri geared turbines, exposing both a connected four-ship design story and limits in domestic propulsion supply.