USS Montana,
Battleship (BB-51)
Act of 4 March 1917:

"._._. Of the vessels autyhorized in the 'Act ._._.' approved August twenty-ninth, nineteen hundred and sixteen, the construction of the following vessels shall be bugun as soon as practicable at a cost exclusive of armor and armament not to exceed the following amounth" Three battleships, $15,000,000 each;. ._._."
Authorized 4 March 1917, Montana (BB-51) was laid down 1 September 1920; but construction of the South Dakota class battleship by Mare Island Navy Yard, Vallejo, California, was canceled 8 February 1922 by the Washington Treaty on the limitation of naval armament. Montana was struck from the Navy list 24 August 1923 and sold 25 October 1923 to be scrapped.
USS Montana, Battleship (BB-51) Specifications
1922
  • Length Overall: 684'
  • Extreme Beam: 106'
  • Normal Displacement:
    • Tons: 43,200
    • Mean Draft: 33'4"
  • Designed Complement: 1,351
  • Armor:
    • Belt: 13.5"
    • Turrets: 18"
    • Deck:
      • 2nd: 3.5"
      • 3rd: 1.25"
    • Conning Tower: 16"
  • Designed Speed: 23
  • Designed Shaft Horsepower: 60,000
  • Engines:
    • Manufacturer: Westinghouse.
    • Type: Turbine, electric drive.
  • Screws: 4
  • Class: South Dakota
Armament:
  • Main:
    • (12) 16"/50
  • Secondary:
    • (16) 6"/53
    • (6) 3"/50 AA
  • Torpedo Tubes:
    • (2) 21" submerged
Bibliography
Larry W. Jewell, Who's Who of United States Battleships, (Internet publication), edition: 30 August, 1993.
James L. Mooney, Dictionary of American Naval Fighting Ships, (Washington, D.C.: U.S. Government Printing Office, 1964), Vol.1 -- A-B, p. 197
James L. Mooney, Dictionary of American Naval Fighting Ships, (Washington, D.C.: U.S. Government Printing Office, 1969), Vol.4: L-M, p. 424

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