Huntington Ingalls completes acceptance sea trials of Legend-class cutter Stone WMSL 758 for US Coast Guard


According to a press release published on October 2, 2020, Huntington Ingalls Industries’ (NYSE: HII) Ingalls Shipbuilding division announced on October 2, 2020, the successful completion of acceptance sea trials for the U.S. Coast Guard’s newest national security Legend-class cutter, Stone (WMSL 758). During seal trials, the ship spent two days in the Gulf of Mexico proving its systems.
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Russian Vyborg Shipyard laid the Purga ice class coastguard ship of project 23550 925 001 Ingalls Shipbuilding successfully completed acceptance trials for the U.S. Coast Guard’s ninth National Security Cutter, Stone WMSL 758. (Picture source Photo by Lance Davis/HII)


“I am very proud of the Ingalls team that conducted another outstanding acceptance trial on our ninth national security cutter Stone. This ship, like all of the national security cutters we have delivered, will be capable of undertaking the most challenging Coast Guard missions with great capability and endurance,” Ingalls Shipbuilding President Brian Cuccias said. “We are proud of our shipbuilders and the state-of-the-art design and construction of Stone, and we look forward to the ship’s upcoming delivery.”

Ingalls has delivered eight Legend-class NSCs with two more under construction and one additional under contract. Stone is scheduled to deliver later this year and will be homeported in Charleston, South Carolina.

NSC 9 was named to honor Coast Guard officer Commander Elmer “Archie” Fowler Stone, Coast Guard aviator number one, who made history in 1919 for being one of two Coast Guard pilots in the four man air crew who completed the first transatlantic flight in a Navy seaplane.

The Legend-class cutter, also known as the National Security Cutter (NSC) and Maritime Security Cutter, Large, is the largest active patrol cutter class of the United States Coast Guard. Entering into service in 2008, the Legend-class is the largest of several new cutter designs developed as part of the Integrated Deepwater System Program.NSCs are 418 feet long with a top speed of 28 knots, a range of 12,000 miles, an endurance of 60 days and a crew of 120.

The Legend-class is equipped with the same 220 rpm Bofors 57 mm gun as mounted on the USN's Littoral combat ships. Guided 57 mm ammunition is being developed for the Mk 110 for the Navy and Coast Guard, including for use on the National Security cutters. The Missile Defense duties are handled by the MK 53 NULKA decoy systems, the MK 36 SRBOC countermeasure systems also used on the FFG-7 and CG-47 programs and the Phalanx CIWS. The combination of the Mk 110 and the Phalanx gives the cutters anti-surface capability, limited air-defense capability, and the capability to provide naval gunfire support