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Brazilian submarine Almirante Karam

Almirante Karam (S43)[9] —previously known as Angostura— is the fourth unit of the Riachuelo-class submarines built for the Brazilian Navy by ICN in Itaguaí, and DCNS, a modified design of the original French Scorpène class

History
Brazil
NameAlmirante Karam
NamesakeAdmiral Alfredo Karam
Ordered23 December 2008[1][2]
BuilderICN, Madeira Island, Itaguaí
HomeportMadeira Island
IdentificationPennant number: S43
StatusUnder construction[3]
General characteristics
Class and typeRiachuelo-class submarine
Displacement1,900 t (1,900 long tons)
Length70.62 m (231 ft 8 in)
Beam6.2 m (20 ft 4 in)
Draft5.8 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
Speed21 knots (39 km/h; 24 mph)
Test depth400 m (1,300 ft)
Complement32
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
  • Thales DR 3000/ITT AR 900 Electronic support measures
  • Safran Series 20 target identification and classification system
Electronic warfare
& decoys
  • Naval Group Contralto-S decoy launchers
  • CANTO anti-torpedo countermeasures
Armament
NotesSources:[4][5][6][7][8]

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.[10]

Program history

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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,[11] the Humaitá was launched on 11 December 2020, and the Tonelero on 27 March 2024.[12]

Namesake

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Almirante Karam was named after the former Admiral Alfredo Karam.[9]

References

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  1. ^ "DECRETO Nº 8.630, DE 30 DE DEZEMBRO DE 2015". Brazil Gov. 30 December 2008. Retrieved 25 January 2022.
  2. ^ a b 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. ^ "Brasil negocia com França acordo para combustível nuclear de submarino, diz Itamaraty". Folha de S.Paulo. 22 March 2024.
  4. ^ "PROSUB: NUCLEP e ICN avançam na construção do Submarino Nuclear Brasileiro" (in Portuguese). Poder Naval. 2 August 2019.
  5. ^ "Submarino Nuclear Brasileiro" (in Portuguese). Retrieved 4 August 2019.
  6. ^ Luiz Padilha (5 December 2012). "SBr – Submarino 'Riachuelo' (S-40)". Defesa Aérea & Naval. Retrieved 5 December 2020.
  7. ^ "Programa Nuclear da Marinha" (in Portuguese). Retrieved 3 August 2019.
  8. ^ Joao Paulo Zeitoun Moralez (2 September 2021). "La Marina de Brasil incorpora el primer submarino de la Clase Riachuelo". Pucara Defensa.
  9. ^ a b "Marinha renomeia de 'Almirante Karam' quarto submarino da Classe Riachuelo". Defesa Aérea e Naval (in Portuguese). 11 October 2024.
  10. ^ "Diferenças entre o submarino Scorpène e o S-BR brasileiro". Poder Naval (in Portuguese). 7 December 2018. Retrieved 5 December 2020.
  11. ^ "Submarino Riachuelo inicia provas de mar" (in Portuguese). Poder Naval. 25 September 2019.
  12. ^ "Tonelero: saiba como é o submarino lançado por Lula e Macron no RJ". G1. 27 March 2024.
 

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