IJN Tsushima (CB-1937)


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Classified as an Armoured cruiser (CB) rather than the heavy cruiser designation (CA) of the earlier Japanese cruisers, this was because of the 10" main armament fitted to the ships. The 10" came from the secondary turrets off the Satsuma and Aki which had been demilitarised in the 1920's. With the Japanese failing to ratify the 1930 Naval Treaty, Japan started building the ships they wanted to have rather than those they were dictated to build.

These ships and the Kasagi class were similar in layout except for size of armament. The existence of these ships was kept as quiet as possible to maintain the edge the ships gave the Japanese over the Allied cruisers. The ships torpedo armament was second to none with 16 of the superlative "Long Lance" 24" tubes. Scout aircraft rounded off a very useful cruiser class.

Below: original drawing. Looks a bit different to that above.


Displacement 18,000 tons std, 21,250 tons full load
Length 653 ft
Breadth 74 ft
Draught 24 ft
Machinery 4 shaft Steam turbines, 150,000shp
Speed 34 knots
Range 6,500 miles at 18 knots
Armour 5.5" side, 3" deck, 6" turrets.
Armament 8 x 10" (4x2)

8 x 5" (4x2)

36 x 25mm (18x2)

Aircraft 3
Torpedoes 16 x 24" (4x4)
Complement 940
Notes Tsushima


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