Minas Geraes uses Vickers triple-expansion engines rather than turbines, despite its advanced gunnery layout. This mature machinery is reliable, predictable, and supported by many facilities able to maintain and refit it. The same logistical logic helps explain continued American and German use of triple-expansion plants. Turbines remain a newer technology whose advantages depend on accumulated design and operating experience. Britain is moving faster because work associated with Turbinia and subsequent turbine development is beginning to deliver efficient machinery. Adopting a promising technology also depends on repair networks, institutional knowledge, and acceptable risk.
Notable Point · 26:50-27:49
Maintainability slows the transition from engines to turbines
Brazilian, American, and German choices show why navies retained familiar triple-expansion engines even as British turbine experience began to pay off.