The ship San Carlos was a Spanish fleet line vessel, built at La Habana (Havana) shipyard, that at that time still was a Spanish colony. Was a "Santa Ana" class, with 3 decks, 3 masts with square sails, and 112 cannons. Santa Ana class was a project from which were constructed a series of 8 ships, 3 at Ferrol, Spain and 5 at Havana:  Santa Ana (Saint Anne), Ferrol, 1784, which gave name to the series; Mejicano (Mexican) and Conde de Regia (Count of Regia), Havana, both 1786; Salvador del Mundo (savior of the World), Ferrol, and Real Carlos (Royal Charles), Havana, both 1787; San Hermenegildo (Saint Hermenegildo), Havana, 1789; Reina Luisa (Queen Louise), Ferrol, 1791; and Príncipe de Asturias (Prince of Asturias), Havana, 1794. Please note real name was "Real Carlos" instead of "San Carlos", but most people knew it as "San Carlos", and named it this way.