The Spanish Nationalists, whose navy was substantially outnumbered by the Republicans, made an extensive use of auxiliary cruisers during the Spanish Civil War, two of them on loan from Italy: The Armed merchant cruisers were made by requisitioning large ships and providing them with guns and other equipment.
These ships had at the time of building been fitted with extra strong decks specifically to facilitate the installation of military equipment when required, but this was the only difference between them and other merchantmen of the period.
Unlike the Germans and the Japanese, none of the armed merchant cruisers (or auxiliary cruisers) of the Italian Royal Navy (Regia Marina) were deployed to destroy or capture Allied merchant ships and were mostly used as supply ships or escorts.
Initially she was an auxiliary minelayer, armed only with two 20 mm anti-aircraft guns and able to carry up to 200 mines.
In 1942 she was also armed with three 105 mm naval/AA guns and designated as auxiliary cruiser (crucişător auxiliar).