The Santa Maria class of frigates are the Spanish Navy's designation for six locally built warships based on the Oliver Hazard Perry-class frigates of the United States Navy.
Sea - Military - Surface Warfare
All of the Spanish FFG's have the length of the later Oliver Hazard Perry FFG's, and have a wider beam than the USN design, and therefore able to carry more top weight. Fin stabilizers are fitted.
Looks like these are in for a refit.