Topic summary
Dreadnoughts
Extracted from the Wikipedia article Dreadnought.
Propulsion
Dreadnoughts were propelled by two to four screw propellers. Dreadnought herself, and all British dreadnoughts, had screw shafts driven by steam turbines. The first generation of dreadnoughts built in other nations used the slower triple-expansion steam engine which had been standard in pre-dreadnoughts.