IJN Myoko (CA-1929)


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With the Myoko class the Japanese made the point of not giving the correct dimensions or displacements on the class till after 1930 when the Japanese had withdrawn from the Washington and London treaties. In doing so they stole a march on the Western powers who did not start building bigger than the treaty cruisers till 1935 or later. As far as the Japanese were concerned what the Western Gaijin did not know would not hurt them till the class took out the ABDA forces in late 1941 (Nachi and Haguro plus light forces).

Above: Myoko as completed 1929 with the single 4.7" AA guns without shields. The 24" torpedoes are in triple groups in fixed broadside tubes.

On the two above drawings I have added six feet of freeboard to the drawings. Three feet above and below the waterline. Because I have increased the depth of the hull I have also altered the dimension statistics to include a broader hull. This increases the stability of the ships a lot and means they do not need the bulges that were fitted soon after completion.

War service of the class was extensive. As stated above the class was involved in the taking of the Dutch East Indies and the destruction of the Allied cruisers tasked with defeating the invasion. The major additions during the war were more and more 25mm AA guns in triple, twin, and single mountings, over 50x25mm being fitted. 1943 onwards radar started appearing.

Displacement 14,500 tons std, 17,150 tons full load
Length 669 ft
Breadth 68 ft
Draught 23 ft
Machinery 4 shaft Steam turbines, 150,000shp
Speed 33 knots
Range 7,500 miles at 14 knots
Armour 4" side, 2.5" deck, 5" turrets.
Armament 10 x 8" (5x2)

6 x 4.7" (6x1)


10 x 8" (5x2)

8 x 5" (4x2)

8 x 25mm

Aircraft 3 3
Torpedoes 12 x 24" (4x3) fixed 8 x 24" (2x4)
Complement 940
Notes Myoko

Myoko running trials after its last pre-war renovations in 1941.


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