The U.S. Coast Guard ordered another four fast-response cutters Tuesday from Bollinger Shipyards LLC for a total of 64 Sentinel-class vessels under a 13-year contract. The vessels will be constructed in Lockport, La., for delivery between fall 2024 and summer 2025, the shipbuilder announced Tuesday in a news release. The Coast Guard has commissioned into service 43 fast-response cutters built by Bollinger under a design-and-build contract for 34 vessels first let in 2008, according to the release.