Brazilian submarine Humaitá (S41)

Humaitá (S41) is a Brazilian Riachuelo-class submarine built for the Brazilian Navy by ICN in Itaguaí, and DCNS.

For other ships with the same name, see Brazilian submarine Humaitá.
Humaitá in sea trials
History
Brazil
NameHumaitá
NamesakePassage of Humaitá
Ordered23 December 2008[1][2]
BuilderICN, Madeira Island, Itaguaí
Laid down9 September 2013[3]
Launched11 December 2020[4]
HomeportMadeira Island
Identification
StatusIn sea trials
Badge
General characteristics
Class and typeRiachuelo-class submarine
Displacement1,900 t (1,900 long tons)[5]
Length70.62 m (231 ft 8 in)[5]
Beam6.2 m (20 ft 4 in)[5]
Draft5.8 m (19 ft 0 in)[5]
Propulsion
  • 4 × MTU 12V 396 SE84 diesels[5]
  • 1 × Jeumont-Schneider EPM Magtronic electric[5]
  • 3,909 hp (2,915 kW)[5]
  • 1 × shaft[5]
Speed21 knots (39 km/h; 24 mph) surfaced/submerged[5]
Range
  • 6,000 nmi (11,000 km; 6,900 mi) at 8 kn (15 km/h; 9.2 mph) surfaced[2]
  • 550 nmi (1,020 km; 630 mi) at 4 kn (7.4 km/h; 4.6 mph) submerged[2]
Endurance70 days[6]
Test depth400 m (1,300 ft)[7]
Complement32[5]
Sensors and
processing systems		DCNS Submarine Tactical Information and Command System[5]
Electronic warfare
& decoys
Armament

The Brazilian boats are larger in length, tonnage and cargo capacity compared to the original French project. The Brazilian version are 70.62 m (231 ft 8 in) and 1,900 tons, compared to the original Scorpènes that are 61.7 m (202 ft 5 in) and 1,565 tons.[9]

Program history

In 2008, Brazil purchased four enlarged Scorpènes for USD 10 billion with a total technology transfer agreement and a second agreement to develop the first Brazilian nuclear-powered submarine, Álvaro Alberto. 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,[10] the Humaitá was launched on 11 December 2020.[4]

Development and design

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.[3] At this point, technology transfer from French technicians to Brazilians had already started.[11]

The other boats of the Brazilian class are Riachuelo (S40), Tonelero (S42) and Angostura (S43).[5]

Namesake

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.[12]

The other submarines were:

  • S Humaitá (S14) - Submarine of the Gato class, used in World War II by the U.S. Navy, before being incorporated into the Brazilian Navy. (1957–1967)
  • S Humaitá (S20) - Submarine of the Oberon class. (1973–1993)

References
  1. "DECRETO Nº 8.630, DE 30 DE DEZEMBRO DE 2015". Brazil Gov. 30 December 2008. Retrieved 25 January 2022.
  2. Nicolas von Kospot (2 June 2010). "First Steel Cut for Brazilian Submarine Programme". www.defpro.com. Archived from the original on July 17, 2011. Retrieved 7 June 2010.
  3. "Cortada a primeira chapa do segundo submarino do PROSUB, o futuro 'Humaitá'" (in Portuguese). Poder Naval. 9 September 2013.
  4. "Bolsonaro encabeza la botadura de otro submarino construido por Brasil y Francia". EFE. 11 December 2020.
  5. "Submarino "Riachuelo" reforça a soberania do País na Amazônia Azul". Brazilian Navy (in Portuguese). 1 September 2022.
  6. "Submarinos (Classe Riachuelo)". Brazilian Navy (in Portuguese). 5 September 2022. Retrieved 8 January 2023.
  7. Beatriz Freitas Pereira (3 December 2020). "S-41 Humaitá pronto para ser lançado". Defesanet. Retrieved 5 December 2020.
  8. Joao Paulo Zeitoun Moralez (2 September 2021). "La Marina de Brasil incorpora el primer submarino de la Clase Riachuelo". Pucara Defensa.
  9. "Diferenças entre o submarino Scorpène e o S-BR brasileiro". Poder Naval (in Portuguese). 7 December 2018. Retrieved 5 December 2020.
  10. "Submarino Riachuelo inicia provas de mar" (in Portuguese). Poder Naval. 25 September 2019.
  11. "Marinha do Brasil PROSUB" (in Portuguese). Archived from the original on 19 November 2016. Retrieved 5 December 2020.
  12. "NAVIOS DE GUERRA BRASILEIROS - 1822 - Hoje" (in Portuguese). Retrieved 8 December 2020.
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