In 1864 it was assigned to the naval division commanded by pt:Francisco Pereira Pinto, hunting ships of the Uruguayan Navy.

[1] On a mission to blockade Paraguayan ports, the Jequitinhonha was assigned to the naval division commanded by José Segundino de Gomensoro on 5 April 1865.

[2] Apparently Commander Pinto decided to fire on the Paraguayan shore batteries, which required him to turn the ship in the river.

Gomensoro, commanding the marines, continued to fire with as many of the ship's guns as could be brought to bear on the enemy while it remained trapped.

[4][2] After the battle, the Brazilians tried all night and much of the following day to pull the Jequitinhonha free, but in the end Pinto and his crew abandoned the ship.