Riachuelo was completed in 1883. Like many ships of the early pre-dreadnought era, her design was unique. She is distinguished by two main gun turrets, offset to port (forward) and to starboard (aft), with a full superstructure deck higher than the turrets, along with twin funnels and a full three-masted rig. The similar but smaller Aquidaban, completed two years later, had only a single funnel. Riachuelo was overhauled and re-armed in 1893-1895, and was scrapped in 1910.

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