Brazilian submarine Humaitá (S41)

For other ships with the same name, see Brazilian submarine Humaitá.

Humaitá underway
History
Brazil
Name	Humaitá
Namesake	Passage of Humaitá
Ordered	23 December 2008[1][2]
Builder	ICN, Madeira Island, Itaguaí
Laid down	9 September 2013[3]
Launched	11 December 2020[4]
Sponsored by	Adelaide Chaves Azevedo e Silva
Commissioned	12 January 2024[5]
Homeport	Madeira Island
Identification	MMSI number: 710500000 Callsign: PWHU Pennant number: S41
Status	In service
General characteristics
Class and type	Riachuelo-class submarine
Displacement	1,900 t (1,900 long tons)
Length	70.62 m (231 ft 8 in)
Beam	6.2 m (20 ft 4 in)
Draft	5.8 m (19 ft 0 in)
Propulsion	4 × MTU 12V 396 SE84 diesels 1,500 hp (1,119 kW) each 1 × Jeumont-Schneider EPM Magtronic electric 3,909 hp (2,915 kW) 1 × Shaft Exide Hagen batteries
Speed	21 knots (39 km/h; 24 mph)
Test depth	400 m (1,300 ft)
Complement	32
Sensors and processing systems	Naval Group SUBTICS combat management system Thales TSM 2233 Eledone hull and flank array passive sonar Thales Safare/S-Cube hull active sonar Safran Series 20 target identification and classification system
Electronic warfare & decoys	Thales DR 3000/ITT AR 900 electronic support measures Naval Group Contralto-S decoy launchers CANTO anti-torpedo countermeasures
Armament	6 × 533 mm (21 in) torpedo tubes: 8 × SM-39 Exocet anti-ship missiles 18 × F21 heavyweight torpedoes 30 × naval mines
Notes	Sources:[6][7][8][9][10]

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

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.^[11]

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,^[12] 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.^[13]

The other boats of the Brazilian class are Riachuelo (S40), Tonelero (S42) and Almirante Karam (S43).

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.^[14]

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. "VÍDEO: Cerimônia de Mostra de Armamento do Submarino 'Humaitá' – S41" (in Portuguese). Poder Naval. 12 January 2024. Retrieved 12 January 2024.
6. "PROSUB: NUCLEP e ICN avançam na construção do Submarino Nuclear Brasileiro" (in Portuguese). Poder Naval. 2 August 2019.
7. "Submarino Nuclear Brasileiro" (in Portuguese). Retrieved 4 August 2019.
8. Luiz Padilha (5 December 2012). "SBr – Submarino 'Riachuelo' (S-40)". Defesa Aérea & Naval. Retrieved 5 December 2020.
9. "Programa Nuclear da Marinha" (in Portuguese). Retrieved 3 August 2019.
10. Joao Paulo Zeitoun Moralez (2 September 2021). "La Marina de Brasil incorpora el primer submarino de la Clase Riachuelo". Pucara Defensa.
11. "Diferenças entre o submarino Scorpène e o S-BR brasileiro". Poder Naval (in Portuguese). 7 December 2018. Retrieved 5 December 2020.
12. "Submarino Riachuelo inicia provas de mar" (in Portuguese). Poder Naval. 25 September 2019.
13. "Marinha do Brasil PROSUB" (in Portuguese). Archived from the original on 19 November 2016. Retrieved 5 December 2020.
14. "NAVIOS DE GUERRA BRASILEIROS - 1822 - Hoje" (in Portuguese). Retrieved 8 December 2020.