The following list comprises the active units serving at the Armada. This listing is updated at least once a month, it can be considered a reliable source of information for this particular topic. Units are considered active as long as there is no official decomission note published on the Official Defense Bulletin.
There is another list for the Armada containing decomissioned ships ( check Spain in the Countries section ).

On 24/05/2017 the number of active units is 92.

Frigates (11)

NumberName (Class, Type)Details
F81Santa María (Santa María, [FFG]) ...See data
F82Victoria (Santa María, [FFG]) ...See data
F83Numancia (Santa María, [FFG]) ...See data
F84Reina Sofía (Santa María, [FFG]) ...See data
F85Navarra (Santa María, [FFG]) ...See data
F86Canarias (Santa María, [FFG]) ...See data
F101Alvaro de Bazán (A. de Bazán, [FFG]) ...See data
F102Almirante Juan de Borbón (A. de Bazán, [FFG]) ...See data
F103Blas de Lezo (A. de Bazán, [FFG]) ...See data
F104Méndez Núñez (A. de Bazán, [FFG]) ...See data
F105Cristobal Colón (A. de Bazán, [FFG]) ...See data

Submarines (3)

NumberName (Class, Type)Details
S71Galerna (Galerna, [SS]) ...See data
S73Mistral (Galerna, [SS]) ...See data
S74Tramontana (Galerna, [SS]) ...See data

Transports and Amphibs (15)

NumberName (Class, Type)Details
L51Galicia (Galicia, [LPD]) ...See data
L52Castilla (Galicia, [LPD]) ...See data
L61Juan Carlos I (Juan Carlos I, [LHD]) ...See data
L603(LCM-1E) ...See data
L604(LCM-1E) ...See data
L605(LCM-1E) ...See data
L606(LCM-1E) ...See data
L607(LCM-1E) ...See data
L608(LCM-1E) ...See data
L609(LCM-1E) ...See data
L610(LCM-1E) ...See data
L611(LCM-1E) ...See data
L612(LCM-1E) ...See data
L613(LCM-1E) ...See data
L614(LCM-1E) ...See data

Patrol (22)

NumberName (Class, Type)Details
P22Tagomago (Anaga, [PC]) ...See data
P26Medas (Anaga, [PC]) ...See data
P28Tabarca (Anaga, [PC]) ...See data
P41Meteoro (Meteoro, [OPV]) ...See data
P42Rayo (Meteoro, [OPV]) ...See data
P43Relámpago (Meteoro, [OPV]) ...See data
P44Tornado (Meteoro, [OPV]) ...See data
P62Alborán (Freire 311, [PS]) ...See data
P63Arnomendi (Freire 311, [PS]) ...See data
P64Tarifa (Freire 311, [PS]) ...See data
P71Serviola (Serviola, [PS]) ...See data
P72Centinela (Serviola, [PS]) ...See data
P73Vigía (Serviola, [PS]) ...See data
P74Atalaya (Serviola, [PS]) ...See data
P76Infanta Elena (Infanta Elena, [PS]) ...See data
P77Infanta Cristina (Infanta Elena, [PS]) ...See data
P78Cazadora (Infanta Elena, [PS]) ...See data
P81Toralla (Toralla, [PB]) ...See data
P82Formentor (Toralla, [PB]) ...See data
P101P101 (Aresa PVC-160, [PB]) ...See data
P114P114 (Aresa PVC-160, [PB]) ...See data
P201Cabo Fradera (Cabo Fradera, [PB]) ...See data

Mine Warfare (6)

NumberName (Class, Type)Details
M31Segura (Segura, [MHC]) ...See data
M32Sella (Segura, [MHC]) ...See data
M33Tambre (Segura, [MHC]) ...See data
M34Turia (Segura, [MHC]) ...See data
M35Duero (Segura, [MHC]) ...See data
M36Tajo (Segura, [MHC]) ...See data

Auxiliaries (35)

NumberName (Class, Type)Details
A01Contramaestre Casado ([AFT]) ...See data
A04Martín Posadillo ([AK]) ...See data
A05El Camino Español ([AK]) ...See data
A14Patiño ([AOR]) ...See data
A15Cantabria ([AOR]) ...See data
A20Neptuno (Amatista, [ASR]) ...See data
A23Antares (Castor, [AGS]) ...See data
A31Malaspina (Malaspina, [AGS]) ...See data
A32Tofiño (Malaspina, [AGS]) ...See data
A33Hespérides (Bazán B-204, [AGOR]) ...See data
A51Mahón (Circos, [ATA]) ...See data
A52Las Palmas (Circos, [ATA]) ...See data
A53La Graña (Punta Amer, [ATA]) ...See data
A71Juan Sebastián Elcano ([AXT]) ...See data
A72Arosa ([YTS]) ...See data
A73Blanca ([YTS])  
A74La Graciosa ([YTS]) ...See data
A76Giralda ([YTS]) ...See data
A77Almansa ([YTS])  
A78Peregrina ([AXT]) ...See data
A79Aguete ([AXT])  
A80Nautilus ([YTS])  
A82Contramaestre Navarrete (Serie YE, [YXT]) ...See data
A83Contramaestre Sánchez Fernández (Serie YE, [YXT]) ...See data
A84Contramaestre Artero (Serie YE, [YXT]) ...See data
A85Contramaestre Lamadrid (Serie YE, [YXT]) ...See data
A91Astrolabio (LHT-130/Rodman 1250, [YGS]) ...See data
A92Escandallo (Escandallo, [YGS]) ...See data
A93Sondaleza (Escandallo, [YGS])  
A101Mar Caribe (Amatista, [ARS]) ...See data
A111Alerta (Darss, [AGI]) ...See data
A121Guardiamarina Barrutia (GM Barrutia (Rodman 66), [YXT]) ...See data
A122Guardiamarina Chereguini (GM Barrutia (Rodman 66), [YXT]) ...See data
A123Guardiamarina Rull (GM Barrutia (Rodman 66), [YXT]) ...See data
A124Guardiamarina Salas (GM Barrutia (Rodman 66), [YXT]) ...See data