What is xiii?

Some articles on xiii:

List Of Sunken Battleships - List of Sunken Battleships - Sunk By Torpedoes or Mines - Alfonso XIII
... Causing confusion among some historians, Alfonso XIII was renamed España after her sistership España ran aground and sank off Morocco in 1923 ... to be a Nationalist mine which the Alfonso XIII (España) struck by accident ...

More definitions of "xiii":

  • (adj): Being one more than twelve.
    Synonyms: thirteen, 13