The PC-461-class submarine chasers were a class of 343 ships built for the United States Navy. Their design was primarily based on the experimental PC-451 and PC-452 submarine chasers. The class saw extensive use in most theatres of World War II, either under the US flag or other Allied countries under the Lend-Lease program. While the class was not particularly successful in its intended role, being confirmed to have sunk only one submarine throughout the war, they found more success as a gunboat, as such were frequently deployed to support landing operations, including Normandy. After the war, the ships were later used by 22 countries around the world, primarily as coastal and riverine patrol vessels.

USS PC-466, later renamed Carmi in 1958, was one of the numerous PC-461 class submarine chasers. She is notable for being one of the ships present at the formal surrender of Japan on 2 September, 1945.

Introduced in Update 1.91 "Night Vision", the Carmi is more specialized in long range fire support, unlike the other early American sub-chasers, owing to her armaments of two 3-inch (76 mm) guns. As she is frequently matched against fast and manoeuvrable PT boats, these weapons can be quite hard to handle at first. However, as the guns pack considerable punch for their BR, along with her durable steel hull, she is capable of going toe-to-toe even against a much superior foe at higher BR when handled correctly.