The Brazilian boats are larger in length, tonnage and cargo capacity compared to the original French project.

The hull of Riachuelo was laid down at Cherbourg, France on 27 May 2010 and it was jumboized at the Brazilian Navy Shipyard in Itaguaí in late 2012.

[2] The first submarine Riachuelo was launched on 14 December 2018, and began sea trials in September 2019,[12] the Humaitá was launched on 11 December 2020 by Lady Adelaide Chaves Azevedo e Silva, wife of Defense Minister Fernando Azevedo e Silva.

[4] The first stage of construction of the Humaitá took place in September 2013 in Brazil, at the headquarters of ICN in Itaguaí, with the cutting of the first steel plates of the structure.

Humaitá is the fifth boat and the third submarine of the Brazilian Navy to receive this name, in honor of a military operation, which took place in 1868, in the Paraguayan War.