The "maximum battleships", also known as the "Tillman Battleships", were a series of World War I-era design studies for extremely large battleships, prepared in late 1916 and early 1917 to the order of Senator "Pitchfork" Benjamin Tillman by the Bureau of Construction and Repair (C&R) of the United States Navy. The Navy was not interested in the designs and drew them up to win support from the Committee on Naval Affairs, on which Tillman sat. Nevertheless, they helped influence design work on the Pennsylvania and first South Dakota classes of battleships. The plans prepared for the senator were preserved by C&R in the first of its "Spring Styles" books, where it kept various warship designs conceptualized between 1911 and 1925.