The Wyoming-class battleship was the fourth series of two dreadnought battleships built for the United States Navy. The class comprised two ships: Wyoming and Arkansas. At the time of the design of this pair of dreadnoughts, not a single one of the previous designs had yet gone to sea. While somewhat larger than their predecessors they retained all the features that were common to American battleships to date, with centerline turrets, low freeboard, long service ranges, and very thick side armor. They were also the last U.S. capital ships armed with 12 inch (305 mm) guns; the Alaska class battlecruisers which would follow in World War II were classified by the navy as "large cruisers", despite having 12" guns.