BB-65 USS Illinois
BB-65 Illinois was an uncompleted battleship originally intended to be the first ship of the Montana class. However, the urgent need for more warships at the outbreak of World War II and the U.S. Navy’s experiences in the Pacific theater led it to conclude that rather than battleships larger and more heavily armed than the Iowa class, it quickly needed more fast battleships of that class to escort the new Essex-class aircraft carriers being built. As a result, hulls BB-65 and BB-66 were reordered and laid down as Iowa-class battleships in 1942. As such, she was intended to be the fifth member of the Iowa-class constructed, and the fourth navy ship to be named in honor of the 21st US state.
Like her sister ship Kentucky BB-66, Illinois was still under construction at the end of World War II. She was canceled in August 1945, but her hull remained as a parts hulk until she was broken up in 1958.
Illinois BB-65 at Philadelphia on 7 July 1945 
Illinois September 1945 
1945 photo showing tapered side armor plates manufactured for Illinois BB-65 in storage 
Prefabricated tank assemblies for the hull torpedo defense system awaiting installation