The Dreadnought-class refers to a type of battleship that emerged in the early 20th century, characterized by its all-big-gun armament and steam turbine propulsion. The first ship of this class, the HMS Dreadnought, was launched by the Royal Navy in 1906, revolutionizing naval warfare by rendering previous battleship designs obsolete. Dreadnought-class battleships typically featured heavy armor and a uniform battery of large-caliber guns, allowing them to engage enemy vessels effectively at long ranges. This design set the standard for future battleships and marked a significant shift in naval strategy during the World War I era.