Spain seized her in 1918 and had her converted into a seaplane tender and balloon carrier, entering Spanish Navy service in 1922.

She served in the Rif War, in which her aircraft took part in the Alhucemas landing of French and Spanish forces in 1925.

The second was the former United States Navy aircraft carrier USS Cabot, which Spain borrowed in 1967, bought in 1972 and decommissioned in 1989.

During the Atlantic U-boat campaign of World War I, the Imperial German Navy sank a number of neutral ships, notably during times of unrestricted submarine warfare.

In the autumn of 1921 España No.6 was transferred to the Navy, and from that December she spent five months in Barcelona being converted.

During her career she carried several types of flying boat, including the Felixstowe F.3, Savoia S.16 and S.16 bis, Macchi M.18 and Supermarine Scarab.

She took part in the Rif War until late September 1925 under the command of Wenceslao Benítez Inglott.

[13] That July the Spanish Civil War began, during which a Nationalist air attack damaged her and prevented her from leaving Cartagena.

The ship sank due to the bomb damage in Valencia harbour, becoming a navigational hazard.