Part 2 of the earlier series of images where I finalized the Sirentide's refits, and introduce a subclass of an already existing ship.
As the most numerous class of oceangoing warship in World War 2, especially among the US Navy, destroyers enjoyed massive production runs. The most numerous example of which was the Fletcher-class destroyer. Likewise, in the far-future successor state to the USA, the Phoenix Republic's most produced warship is the Thresher. And like historical destroyers, their designs were often iterated upon to produce ships with better capabilities in one area over another.
In this case, the Summers-class Area Defense Destroyer is essentially an enlarged Thresher hull given new engines, modified armaments, and more anti-air emplacements to allow it to better defend against strike craft and other destroyers instead of partaking in fleet actions as a flanking torpedo force.