- 2 * General Electric LM2500-30 gas turbines generating 41,000 shp (31 MW) coupled to a single shaft and controllable-pitch propeller
- AN/SPS-49 2-D air search radar
- RAN-12L (being replaced by RAN-30) low horizon air search radar for Meroka CIWS
- AN/SPS-55 surface search and navigation radar
- Mk 92 Guided Missile Fire Control System
- AN/SPG-60 Separate Target Illumination Radar (STIR) Missile Control Radar
- AN/SQQ-89 Anti-Submarine Warfare System
- AN/SQS-56 active/passive sonar
- AN/SQR-19 TACTASS Tactical Towed Array Sonar System
- EN/SLQ-610 Nettunel electronic countermeasures unit
- SLQ-25 Nixie torpedo decoy
- Mk-36 SRBOC chaff & decoy launchers
- 1 * Mk-13 single-arm Missile Launcher with a 40-round underdeck magazine for a mix of RIM-66 Standard Missile SM-1MR or RGM-84 Harpoon SSM
- 1 * Oto-Melara 76/62 gun (3 inches / 62-caliber)
- 2 * Mk-32 12.75" (324mm) triple torpedo tubes for Mk-46 / Mod.5 torpedoes
- 1 * FABA Meroka 20mm CIWS
- 2 * Sikorsky SH-60 Seahawk LAMPS III
Santa María (F81) is the lead ship of six Spanish-built Santa Maria-class frigates, based on the American Oliver Hazard Perry class design, of the Spanish Navy. Laid down on 22 May 1982 and launched on 11 November 1984, the Santa María was commissioned into service on 12 October 1986.
All of these Spanish frigates have the length of the later Oliver Hazard Perry frigates, and have a wider beam than the US Navy design, and therefore able to carry more top weight. Fin stabilizers are fitted.
In the American series J.A.G., Santa Maria was used to depict a fictional US Navy Oliver Hazard Perry-class frigate. Her Spanish pennant number F81 is clearly visible in a number of shots.