"The Atlanta's are good boats. They really are badass, and do better then a usual Cruiser in combat, even though they only sport 3 MACs, and a rather large battery of mini-MACs. This is as they aren't a fucking mile long and 800 meters high! But, for all their badass-ness, they just weren't designed to put up to a plasma torp' in any circumstance..."
A experimental Light Cruiser that appeared out of Spaceworks late 2539.
The ship, created as a possible replacement to the huge Light Cruisers that, due to supply shortages, were no longer being made. The Atlanta-class, as well as being extremely agile compared to normal ships of its size, also packs an really powerful load out for a ship of its size, with 3 Heavy MAC Cannons, many Mini-MAC guns in quite a few turrets, and 2 large-caliber point-Defence Autoguns per side. Due to the size if the engines, it also meant that most of the room aft of the Archer bays was filled with reactor essentially. Also, the huge size of the reactor severely cut back on Missile storage and Crew accommodation. It also cut back on endurance. Furthermore, due to all the things that were abord the ship, there was little spare room for extra items, people, or supplies.
The Atlanta-Class Light Cruiser was first conceived as a capital ship, under Project:GOLF, to replace the old Hyclon- and Marathon-class Cruisers. Following many hours of meetings and countless design revisions, Project:GOLF finally yielded a blueprint to present to the UNSC Navy. Following a couple minor revisions, the Navy agreed to fund the construction of 3 Prototypes.
The first Atlanta, the namesake of the class, obviously, was the UNSC Atlanta. During construction, the supports, which were much too small to support the combined pressure of Air and crew and suffered a catastrophic structural failure. The Atlanta, being nearly torn in two by the force of the gases escaping, was written off, and the two known surviving examples, UNSC Floyd and UNSC Las Vegas, were given the amended structural repairs, and both ships entered servace soon after.