Excellent drawing; and the 'look' is (I think) due to her design origins as a Coast Guard cutter.
The
Erie class actually draws more from US cruiser design than Coast Guard cutters. They were designed in a bit the same sort of fashion as the French colonial avisos, and drew on the lineage of the Colonial Gunboat, the Peace Cruiser, etc. The
Eries were born out of the London Treaty's exemption of ships 600-2,000 tons, with up to 6.1" guns - so long as they didn't exceed 20 knots, and didn't have torpedo tubes. The US negotiators for the London Treaty, incidentally, saw this unlimited category as a way to evade Treaty restrictions on cruisers and destroyers, but in the end only
Erie and
Charleston were built.
Friedman's
U.S. Cruisers has a chapter on the
Erie-class and the other London Treaty designs.