Nichteroy[a] was a fifth-rate frigate of the Imperial Brazilian Navy, having been built as a British vessel,[2] acquired by Portugal and later joining the Brazilian cause during the Brazilian War of Independence.

[1] The ship took part in the naval battle off Salvador, where she sailed under the English-born Frigate Captain John Taylor and became notorious for chasing the fleeing Portuguese fleet across the Atlantic to the mouth of the river Tagus.

[3] Later, the vessel sailed under Captain of Sea-and-War James Norton in the Cisplatine War, being Norton's flagship in the battle of Lara-Quilmes, where she took William Brown's frigate 25 de Mayo out of action, which eventually led to its sinking.

[3] The vessel was officially decommissioned in 1836, after years of serving as a structure in the port of Rio de Janeiro.

[3]