OK, those are poor examples of similar ships. It's worth noting that SP_Frigate is over-gunned, though, and should probably have 32 - 36 guns like the Rossiya.
With that in mind, perhaps a more similar ship is the Raa frigate with 32 guns, which again is also used by Spain.
With that in mind, perhaps a more similar ship is the Raa frigate with 32 guns, which again is also used by Spain.