Detailed inspections were made, analyses undertaken, and model-scale tests conducted. The Navy upgraded the Mk 92 Mod 2 system to the Mod 6 system, along with upgrades to radars and processors on 12 frigates. USS Oliver Hazard Perry (FFG-7) was the lead ship of the Oliver Hazard Perry class of guided-missile frigates. Two ships of this class suffered heavy damage while patrolling in the Persian Gulf. The "short-hull" Perry-class frigates are being retired at an advanced rate, even though they have 20 years left on their life.

The Mk 13 Mod 4 missile launcher provides secondary anti-air capability. The Oliver Hazard Perry-class are frigates, and were originally envisioned as escort platforms for anti-aircraft and anti-submarine warfare while crossing the Atlantic Ocean.. The long range air search radar is 2D, and track capacity is limited. Accordingly, only the 12 CORT ships received the RAIDS system.

The unique gas turbine propulsion system can be brought "on line" and be ready to get underway in less than ten minutes, quite a difference from the four hours plus it took conventional steam powered ships.

However, the cycle time for SM-1 is relatively long, and the capability against low ASMs for Mod 2/SM-1 BLK VIA ships is poor. They are extensively modernized versions of ex-Oliver Hazard Perry-class guided-missile frigates of the US Navy, mainly designed for air defense with a weapons configuration that is optimized for general warfare.

Spain also built to this design and a modified design was built in Taiwan (the Cheng Kung Class). Oliver Hazard Perry was in service from … The Mk 92 Mod 6 CORT ships were also planned to receive RAM point-defense missile launchers, but that upgrade has also been canceled.

They could also provide limited defense against anti-ship missiles extant in the 70’s and 80’s. In addition, this engine does not meet current EPA and proposed IMO emission requirements. If equipped with the SM-1 BLK VIB and Mod 6 FCS, it also has a good capability against low altitude ASMs. In fact, an upgraded Oliver Hazard Perry-class frigate (such as the modified ones used by Turkey) would still cost one-third the price of a Burke. The Perry class were originally fitted with Raytheon's AN/SLQ-32(V)2, a self-defence electronic support measures (ESM) system offering limited frequency-cover and questionable security. Senator Raleigh Clayton Muns, Oliver Hazard Perry Class Frigates: United States Navy (2010), p.3 Reserve FFGs comprise about a third of the Western Hemisphere Group whose primary mission is to support counter drug operations in the Caribbean. It features an improved 2D air search radar, and high SM-1 salvo rate against a single target. The Navy developed the FFG 7 class using the minimal manning concept. Samuel B. Roberts (FFG-58) struck a mine which detonated an estimated 250 pounds of TNT. As of 1997, two variants of the SQQ-89 sonar system were in service on this class: SQQ-89(V)10 on FFG 14, 30, 34, 37, 50, 51, 52, and 54, with SQR-19B(V)2 towed array sonar; and SQQ-89(V)2 on FFG 7-9, 11-13, 15, 28, 29, 32, 33, 36, 38-43, 45-49, 53, 55-59, and 61, with SQR-19(V)2 and the UYQ-25A(V)2 processor.
FFG 8 received the towed array during FY 87, along with FFG 55-60; in FY 88, FFG 28, 29, 32, 36, and 39 were equipped; in FY 90, FFG 7 and 15 received the system during overhauls (FFG 7 was lengthened and received the SQQ-89 suite but was not equipped with RAST, leaving her unable to employ SH-60B helicopters); under the FY 91 budget, FFG 9, 48-50, and 52 were modified, and in FY 92, FFG 20 and 51 were equipped. Gas turbine engines are more cost effective than steam or diesel propulsion ships. All 22 ships of the class to be retained in active service began to receive Standard SM-1 Block VIB missiles with improved fusing to counter small radar-cross-section missiles in 1994. They are based upon the U.S. Oliver Hazard Perry class and built by China Shipbuilding Corporation in Kaohsiung, Taiwan under license throughout the 1990s as parts of the "Kuang Hua … The SLQ-32 antennas in a PERRY are carried at about 50ft above the waterline, providing an intercept range of only 23nm.

The Italian gun was selected as superior to the US Navy's standard Maria, Victoria Numancia, Reina Sofia (ex-America), In FY 1999, 43 percent of NRF ships deployed for four to six months in support of US maritime interests. The new engine replaces its originally configured Detroit Diesel 16V-149 series, which is presently installed on all Oliver Hazard Perry (FFG-7) Class frigates. At that time many were already retired or transferred to US allies. The number of Reserve frigates in DESRON ONE declined from five to four as of 01 September 2000, when the USS John A Moore (FFG-19) was disposed of through the Security Assistance Program (SAP).