Brazilian submarine Humaitá (S41)

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

Launch of the S Humaitá
History
Brazil
Name: Humaitá
Namesake: Passage of Humaitá
Ordered: 2009[1]
Builder: ICN Itaguaí & DCNS
Laid down: 9 September 2013[2]
Launched: 11 December 2020[3]
Identification: S41
Status: In sea trials
General characteristics
Class and type: Scorpène-class submarine
Displacement: 2,000 t (2,000 long tons)[4]
Length: 75 m (246 ft 1 in)[4]
Beam: 6.2 m (20 ft 4 in)[4]
Draft: 5.8 m (19 ft 0 in)[4]
Propulsion:
  • 4 × MTU 12V 396 SE84 diesels[4]
  • 1 × Jeumont-Schneider EPM Magtronic electric[4]
  • 3,909 hp (2,915 kW)[4]
  • 1 x shaft[4]
Speed: 21 knots (39 km/h; 24 mph) surfaced/submerged[4]
Range:
  • 6,000 nmi (11,000 km; 6,900 mi) at 8 kn (15 km/h; 9.2 mph) surfaced[1]
  • 550 nmi (1,020 km; 630 mi) at 4 kn (7.4 km/h; 4.6 mph) submerged[1]
Test depth: 400 m (1,300 ft)[5]
Complement: 32[4]
Sensors and
processing systems:		 DCNS Submarine Tactical Information and Command System[4]
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 75 m (246 ft) and 2,000 tons, compared to the original Scorpènes that are 61.7 m (202 ft) and 1,565 tons.[6]

Program history

In 2009, Brazil purchased four enlarged Scorpènes for US$9.9 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.[1]

The first submarine Riachuelo was launched on 14 December 2018, and began sea trials in September 2019,[7] the Humaitá was launched on 11 December 2020.[3]

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.[2] At this point, technology transfer from French technicians to Brazilians had already started.[8]

The other boats of the Brazilian class are Riachuelo (S40), Tonelero (S42) and Angostura (S43).[4]

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.[9]

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. 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.
  2. "Cortada a primeira chapa do segundo submarino do PROSUB, o futuro 'Humaitá'" (in Portuguese). Poder Naval. 9 September 2013.
  3. "Bolsonaro encabeza la botadura de otro submarino construido por Brasil y Francia". EFE. 11 December 2020.
  4. Luiz Padilha (5 December 2012). "SBr – Submarino 'Riachuelo' (S-40)". Defesa Aérea & Naval. Retrieved 5 December 2020.
  5. Beatriz Freitas Pereira (3 December 2020). "S-41 Humaitá pronto para ser lançado". Defesanet. Retrieved 5 December 2020.
  6. "Diferenças entre o submarino Scorpène e o S-BR brasileiro". Poder Naval (in Portuguese). 7 December 2018. Retrieved 5 December 2020.
  7. "Submarino Riachuelo inicia provas de mar" (in Portuguese). Poder Naval. 25 September 2019.
  8. "Marinha do Brasil PROSUB" (in Portuguese). Retrieved 5 December 2020.
  9. "NAVIOS DE GUERRA BRASILEIROS - 1822 - Hoje" (in Portuguese). Retrieved 8 December 2020.
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