For a long time, the Coast Guard has used Navy hand-me-downs. After World War II, many old Navy ships were pressed into Coast Guard service when they were no longer needed for defeating the Axis. Even today, the Coast Guard operates a U.S. Navy castoff in USCGC Alex Haley, a former Navy salvage tug. But now, the tides have turned, and the Coast Guard may actually be bailing the Navy out.
How so? The National Security Cutter is one of five contenders in the Navy's FFG(X) program to find a new, multi-mission guided-missile frigates in the wake of the littoral combat ship's poor performance. Other contenders include a Lockheed designed based on the Freedom-class littoral combat ship and foreign designs — one from Spain (the Álvaro de Bazán-class guided missile frigate) and a Franco-Italian consortium (the FREMM).
The Huntington Ingalls proposal for the FFG(X) program is based on the Bertholf-class national security cutters.
(Department of Homeland Security)
The National Security Cutter hull is currently in production. Right now, the Coast Guard is in the process of building their 10th out of 11 planned vessels.
Also called the Legend-class cutter, this ship is armed with a 57mm gun, about a half-dozen .50-caliber machine guns, and the ability to operate a helicopter, usually a MH-60T Jayhawk. The model displayed last year at SeaAirSpace 2017, the FF4923, also included a 16-cell Mk41 vertical-launch system and eight over-the-horizon anti-ship missiles. This ship already meets several of the requirements as laid out by the Navy's FFG(X) program, making it a great launch point.
Three Oliver Hazard Perry-class frigates: USS Oliver Hazard Perry (FFG 7), USS Antrim (FFG 20), and USS Jack Williams (FFG 24).
According to spec sheets, the National Security Cutter has a top speed of 28 knots. This is slower than some of the other ships out in contention, notably the Freedom-class LCS and the Bazán-class frigates, but it can out-sprint the FREMM. The good news is that the National Security Cutter is large enough (at 4,500 tons — about 50 percent larger than a Perry-class frigate) to handle the new systems.
The Navy is planning to announce the winning design in 2020. Plans call for at least 20 guided-missile frigates to be purchased over a decade's time.