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United States' Montana Class Battleships

Photos

A model of the BB-67 USS Montana at the New York Navy Yard on November 26, 1941:
A model of the BB-67 USS Montana at the New York Navy Yard on November 26, 1941
US Naval Historical and Heritage Command, NH-93912

A model of the BB-67 USS Montana at the New York Navy Yard on October 7, 1944:
A model of the BB-67 USS Montana at the New York Navy Yard on October 7, 1944
US Navy, USN-144964
A model of the BB-67 USS Montana at the New York Navy Yard on November 26, 1941:
A model of the BB-67 USS Montana at the New York Navy Yard on November 26, 1941
US Naval Historical and Heritage Command, NH-93913

An artist's conception model of the BB-67 USS Montana:
An artist's conception model of the BB-67 USS Montana
US Naval Historical and Heritage Command, NH-61246
A model of the BB-67 USS Montana at the New York Navy Yard on November 26, 1941:
A model of the BB-67 USS Montana at the New York Navy Yard on November 26, 1941
US Naval Historical and Heritage Command, NH-93914

A model of the BB-67 USS Montana in 1943:
A model of the BB-67 USS Montana in 1943
US Naval Historical and Heritage Command, NH-44529

Design

Early designs for the Montana class had 18" main guns but it was felt that it would make the ships too long.

The Montana class would have been too wide to pass through the Panama Canal though this wasn't considered a detriment as there were plans to widen the Canal.

The ships were approved to be built under the Act of 19 July 1940, however, in April 1942 President Roosevelt suspended the building of the ships due to a steel shortage for such ships. This shortage was also why work to widen the Panama Canal was also cancelled.

Ships

BB-67 USS Montana

  • Manufacturer: Philadelphia Navy Yard
  • July 21, 1943: Cancelled.

BB-68 USS Ohio

  • Manufacturer: Philadelphia Navy Yard
  • July 21, 1943: Cancelled.

BB-69 USS Maine

  • Manufacturer: New York Navy Yard
  • July 21, 1943: Cancelled.

BB-70 USS New Hampshire

  • Manufacturer: New York Navy Yard
  • July 21, 1943: Cancelled.

BB-71 USS Louisiana

  • Manufacturer: Norfolk Navy Yard
  • July 21, 1943: Cancelled.

Usage

 

Specifications

  Montana Class
Crew 2,149
Displacement 60,500 tons
Displacement - Loaded 70,500 tons
Physical Characteristics  
Length 921' 3", 925'
281.94 m
Length - Water Line 890'
271.27 m
Length - Between Perpendiculars  
Beam 121', 121' 3"
36.88 m
Draft / Height 36', 36' 8"
11.17 m
Draft / Height - Full Load  
Performance  
Speed 28 knots
Range at 15 knots 15,000 nautical miles
Armament 16" L/50 triple turrets: 4
16" triple turrets: 4
5" L/54 twin turrets: 10
5" twin turrets: 10
Anti-Aircraft 40 mm quad mounts: 8
20 mm: 20
Aircraft 3
Armor  
Barbettes 18" - 21.3"
Belt 10.2" - 16.1"
Bulkheads 15.3"
Deck - Armor 6" - 7.35"
Sides  
Turrets - Front 22.5"
Turrets - Rear 12"
Turrets - Sides 10"
Turrets - Top 9.15"
Engines  
Boilers  
Shafts 4
Turbines Geared
HP 172,000
Oil 7,300 tons

Sources:

  1. US Warships of World War 2, Paul H. Silverstone, 1965
  2. Conway's All the World's Fighting Ships 1922-1946, Robert Gardiner, 1987
20th Century American Military History Crucial Site