Board Thread:General Discussion/@comment-26091970-20150604000724/@comment-115.77.219.254-20150926184636

Archer88 wrote: 115.77.219.254 wrote: That kind of upgrade don't make them become complete new class, like give 8" gun don't make Light Cruiser become Heavy Cruiser, size and displacement is matter. Funny you should mention that, as there's a real life example: Initialy Mogami class cruisers were equipped with 6" guns and classified as CL. After japanese upgraded them with 8" guns they were reclassified as CA.

Another example: US Cleveland class CLs were larger in size and displacement then, say Aoba class CAs. So size matters, you say?

Mogami class is Heavy Cruiser from the start, it's displacement and gun port as same as Heavy Cruiser. Because the London Treaty limit heavy cruiser, which strike hard on Japanese heavy cruiser doctrine with heavy cruiser as back bone. To dogde the treaty, Mogami equip 6" gun, reduce displacement under 9.000 tons and call it Light Cruiser, when the war broke out, Mogami were quickly re-arm with 8" since gun ports were design for 8" guns, while it's 6" was give to Yamato, also with 8" gun, Mogami's displacement increase to over 10.000 tons and become true Heavy Cruiser as it's design.