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fighting ships of the world

UNITED STATES NAVY (UNITED STATES OF AMERICA)

CAPITAL SHIPS & MONITORS

COLORADO battleships (1921-1923)

West Virginia 1923

No Name Builder Laid down Launched Comm Fate
BB45 Colorado New York N Yd, Brooklyn 29/5/1919 22/3/1921 30/8/1923 stricken 3/1959
BB46 Maryland Newport News 24/4/1917 20/3/1920 21/7/1921 stricken 3/1959
BB47 Washington New York SB, Camden 30/6/1919 1/9/1921 --- cancelled 2/1922, sunk as target 26/11/1924
BB48 West Virginia Newport News 12/4/1920 19/11/1921 1/12/1923 stricken 3/1959
  

Displacement normal, t

32600

Displacement full, t

33590

Length, m

182.9 wl 190.2 oa

Breadth, m

29.7

Draught, m

9.20

No of shafts

4

Machinery

BB45, 46: electric motors, 2 Westinghouse turbo-generators, 8 Babcock & Wilcox boilers

BB47, 48: electric motors, 2 General Electric turbo-generators, 8 Babcock & Wilcox boilers

Power, h. p.

28900

Max speed, kts

21

Fuel, t

oil 1900 (4656 - 4794 max)

Endurance, nm(kts) 21100(10)

Armour, mm

belt: 343 - 203, deck: 89, splinter deck: 38, barbettes: 320, turrets: 457 face, 254 sides, 229 rear, 127 crown, CT: 406 sides, 203 roof

Armament

BB46: 4 x 2 - 406/45 Mk 1, 14 x 1 - 127/51 Mk 8, 4 x 1 - 76/52 Mk 10, 2 - 533 TT (beam)

BB45, 48: 4 x 2 - 406/45 Mk 1, 12 x 1 - 127/51 Mk 8, 8 x 1 - 76/52 Mk 10, 2 - 533 TT (beam)

Complement

1080

Ship project history: This was a repeat Tennessee design with twin 406mm/45 guns in place of the earlier triple 356mm/50; there was no other substantial change, although for many years there were unofficial claims of a considerable increase in belt armour.

    One ship, the Washington, was cancelled under the Washington Treaty on 8 February 1922 and sunk as a target in 1924.

Ship protection: 125m belt had 5.2m height and was 343mm thick at upper 3.2m part tapering to 203mm at lower edge. Belt was connected with end barbettes by 343mm bulkheads. There was 2.6m in height 203mm belt at 18.3m length aft from aft bulkhead, protecting steering gear, it was closed aft by 343mm bulkhead. Flat main armour deck was connected with upper edge of belt and was 89mm over citadel. One level lower was flat 38mm splinter deck. This deck was 159mm thick with 159mm slopes aft from citadel, protecting steering gear and closed by 203mm bulkhead. TT were protected by 127mm deck at level of lower edge of main belt. Main gun turrets had 457mm faces, 254mm sides, 229mm rears and 127mm crowns. Barbettes were 320mm over and 102-114mm under main deck. CT had 406mm sides and 203mm roof. Funnel uptakes were protected by 229mm armour. Underwater protection was 5.3m deep.

Modernizations: 1922, Maryland: - 2 x 1 - 127/51; + 4 x 1 - 76/52 Mk 10, 1 catapult, 1 seaplane (MO, VE, UO)

1925 - 1926, Colorado, West Virginia: + 1 catapult, 1 seaplane (MO, UO, VE, OL)

late 1920s, all: + 1 catapult (second), 2 seaplanes

1928 - 1929, all: - 8 x 1 - 76/50; + 8 x 1 - 127/25 Mk 10/11, 8 x 1 - 12.7/90

7/1941, West Virginia: - 2 x 1 - 127/51; + 4 x 1 - 76/50 Mk 20

(6/1941 - 1/1942, Puget Sound NYd) Colorado, (1941 - 12/1941, Puget Sound NYd) Maryland, (6/1942 - 9/1944, Puget Sound NYd) West Virginia were modernized as follows:

Colorado 1941

Maryland 1945

West Virginia 1945

Displacement standard, t

34000 - 37000

Displacement full, t

39100 - 40396

Length, m

182.9 wl 190.2 oa

Breadth, m

BB45, 46: 32.9

BB48: 34.8

Draught, m

10.7 - 10.8 full load

No of shafts

4

Machinery

BB45, 46: electric motors, 2 Westinghouse turbo-generators, 8 Babcock & Wilcox boilers

BB48: electric motors, 2 General Electric turbo-generators, 8 Babcock & Wilcox boilers

Power, h. p.

28900

Max speed, kts

20.5

Fuel, t

oil 4700

Endurance, nm(kts)

9700(18)

Armour, mm

BB45, 46: belt: 343 - 203, upper deck: 37, deck: 89, splinter deck: 38, barbettes: 320, turrets: 457 face, 254 sides, 229 rear, 127 crown, CT: 406 sides, 203 roof

BB48: belt: 343 - 203, deck: 165 - 140, splinter deck: 38, barbettes: 320, turrets: 457 face, 254 sides, 229 rear, 184 crown, CT: 127 sides

Armament

BB45: 4 x 2 - 406/45 Mk 5/8, 10 x 1 - 127/51 Mk 8/15, 8 x 1 - 127/25 Mk 10/11/13, 4 x 4 -28/75 Mk 1, 14 x 1 - 20/70 Mk 4, 8 x 1 - 12.7/90, 2 catapults, 3 seaplanes (SOC, OS2U)

BB46: 4 x 2 - 406/45 Mk 5/8, 10 x 1 - 127/51 Mk 8/15, 8 x 1 - 127/25 Mk 10/11/13, 4 x 4 -28/75 Mk 1, 10 x 1 - 12.7/90, 2 catapults, 3 seaplanes (SOC, OS2U)

BB48: 4 x 2 - 406/45 Mk 5/8, 8 x 2 - 127/38 Mk 12, 10 x 4 - 40/56 Mk 1/2, 50 x 1 - 20/70 Mk 4, 1 catapult, 3 seaplanes (SO3C, OS2U)

Sensors

BB45: SC, 2 x FC (Mk 3) radars

BB46: FC (Mk 3) radar

BB48: SC-2, SG, 2 x Mk 8, 4 x Mk 4 radars

Complement

2375

Ship protection after modernization (Colorado, Maryland): 125m belt had 5.2m height and was 343mm thick at upper 3.2m part tapering to 203mm at lower edge. Belt was connected with end barbettes by 343mm bulkheads. There was 2.6m in height 203mm belt at 18.3m length aft from aft bulkhead, protecting steering gear, it was closed aft by 343mm bulkhead. Flat main armour deck was connected with upper edge of belt and was 89mm over citadel. One level lower was flat 38mm splinter deck. This deck was 159mm thick with 159mm slopes aft from citadel, protecting steering gear and closed by 203mm bulkhead. Ex-TT room were protected by 127mm deck at level of lower edge of main belt. There was additional 38mm deck over turbines, laid one level upper from main deck. Main gun turrets had 457mm faces, 254mm sides, 229mm rears and 127mm crowns. Barbettes were 320mm over and 102-114mm under main deck. CT had 406mm sides and 203mm roof. Funnel uptakes were protected by 229mm armour. Underwater protection was 8.0m deep.

Ship protection after modernization (West Virginia): 125m belt had 5.2m height and was 343mm thick at upper 3.2m part tapering to 203mm at lower edge. Belt was connected with end barbettes by 343mm bulkheads. There was 2.6m in height 203mm belt at 18.3m length aft from aft bulkhead, protecting steering gear, it was closed aft by 343mm bulkhead. Flat main armour deck was connected with upper edge of belt and was 140mm over citadel, increasing up to 165mm over magazines. One level lower was flat 38mm splinter deck. This deck was 159mm thick with 159mm slopes aft from citadel, protecting steering gear and closed by 203mm bulkhead. Ex-TT room were protected by 127mm deck at level of lower edge of main belt. Main gun turrets had 457mm faces, 254mm sides, 229mm rears and 184mm crowns. Barbettes were 320mm over and 102-114mm under main deck. CT had 127mm sides. Funnel uptakes were protected by 229mm armour. Underwater protection was 9.0m deep.

Modernizations: 2/1942, Maryland: + 16 x 1 - 20/70 Mk 4, SC radar

early 1942, Colorado, Maryland: - 1 catapult

11/1942, Colorado: + 8 x 1 - 20/70 Mk 4

2/1943, Maryland: + 2 x 4 - 28/75 Mk 1, 32 x 1 - 20/70 Mk 4

11/1943, Colorado: - 2 x 1 - 127/51, 4 x 4 - 28/75, 8 x 1 - 12.7/90; + 6 x 4 - 40/56 Mk 1/2, 4 x 2 - 40/56 Mk 1/2, 20 x 1 - 20/70 Mk 4

11/1943, Maryland: - 2 x 1 - 127/51, 6 x 4 - 28/75, 8 x 1 - 20/70, 10 x 1 - 12.7/90; + 6 x 4 - 40/56 Mk 1/2, 4 x 2 - 40/56 Mk 1/2

spring 1944, Colorado: - 2 x 2 - 40/56, 7 x 1 - 20/70, Mk 3 radar; + 2 x 4 - 40/56 Mk 1/2, 1 x 4 - 20/70 Mk 4, Mk 8 radar

spring 1944, Maryland: - 2 x 2 - 40/56, 4 x 1 - 20/70, Mk 3 radar; + 2 x 4 - 40/56 Mk 1/2, 1 x 4 - 20/70 Mk 4, Mk 8 radar

10/1944, Colorado: - Mk 8 radar; + 8 x 2 - 20/70 Mk 4, 4 x 1 - 20/70 Mk 4, Mk 13 radar

summer 1945, Maryland: - 8 x 1 - 127/51, 8 x 1 - 127/25, 34 x 1 - 20/70, Mk 8 radar; + 8 x 2 - 127/38 Mk 12, 4 x 4 - 40/56 Mk 1/2, 19 x 2 - 20/70 Mk 4, Mk 13 radar

1945, West Virginia: - Mk 8 radar; + 1 x 4 - 20/70 Mk 4, 1 x 2 - 20/70 Mk 4, 8 x 1 - 20/70 Mk 4, Mk 13 radar

1/1946, BB45 Colorado: 4 x 2 - 406/45 Mk 5/8, 8 x 1 - 127/51 Mk 13, 8 x 1 - 127/25 Mk 19, 8 x 4 - 40/60 Mk 2, 2 x 2 - 40/60 Mk 1, 1 x 4 - 20/70 Mk 15, 8 x 2 - 20/70 Mk 24, 39 x 1 - 20/70 Mk 10, 1 catapult, 3 seaplanes, SC, FC (Mk 3), Mk 13 radars

1/1946, BB46 Maryland: 4 x 2 - 406/45 Mk 5/8, 8 x 2 - 127/38 Mk 28, 12 x 4 - 40/60 Mk 2, 2 x 2 - 40/60 Mk 1, 1 x 4 - 20/70 Mk 15, 19 x 2 - 20/70 Mk 24, 2 x 1 - 20/70 Mk 10, 1 catapult, 3 seaplanes, SC, Mk 13 radars

1/1946, BB48 West Virginia: 4 x 2 - 406/45 Mk 5/8, 8 x 2 - 127/38 Mk 28, 10 x 4 - 40/60 Mk 2, 1 x 4 - 20/70 Mk 15, 1 x 2 - 20/70 Mk 24, 58 x 1 - 20/70 Mk 10, 1 catapult, 3 seaplanes, SC-2, SG, Mk 8, 4 x Mk 4, Mk 13 radars

Naval service: Maryland 7/12/1941 during raid of Japanese carrier aircraft to Pearl Harbour was damaged by hits of two bombs and repaired till February, 1942; 22/6/1944 she was damaged by Japanese air torpedo and repaired till August, 1944; 29/11/1944 she was again damaged by kamikaze and repaired till March, 1945; she was second time badly damaged by kamikaze 7/4/1945 and repaired till August, 1945. West Virginia 7/12/1941 during raid of Japanese carrier aircraft to Pearl Harbour has received hits of 6-7 torpedoes and 2 bombs and sunk. She was salvaged in May, 1942 and put on repair and modernization, finished in July, 1944. Colorado was damaged 24/7/1944 by Japanese coast battery (22 hits) and repaired till October, 1944.

Maryland late 1920s

Tennessee 1945

Ivan Gogin, 2014-15