The Pensacola Class are the United States’ first Heavy Cruisers. They had a few issues, and so a new Class, the Northampton Class, was developed as an improvement over them. The following 2 Classes, the Portland and New Orleans Classes, were incremental improvements over the previous Classes, mainly in terms of armor. All American Heavy Cruisers had a Displacement limit up to this point, and the next ship, Wichita, was the first Heavy Cruiser not compliant to the limit, it was a mix of a Brooklyn Class Hull and a Main Battery similar to the New Orleans Class. Wichita laid the groundwork for the Baltimore Class Cruiser, which were produced throughout the war. Like the Cleveland Class, the Baltimore Class encountered a few minor issues, and the Oregon City Class was developed to fix them. After the war ended, the Des Moines Class was developed, they were the biggest Heavy Cruisers ever built, and featured an autoloading Main Battery. They served throughout the rest of the 20th century, and were the last Heavy Cruisers in the world.
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