Brazilian submarine Tonelero (S21)

Tonelero (S21) was an Oberon-class submarine in the Brazilian Navy.

The brazilian submarine Tonelero in foreground
History
Brazil
Name: Tonelero
Builder: Vickers Shipbuilding and Engineering, Barrow, England
Laid down: 18 November 1971
Launched: 22 November 1972
Commissioned: 10 December 1977
Decommissioned: 21 June 2001
Refit: 1995
Fate: Scrapped in 2004
General characteristics
Class and type: Oberon-class submarine
Displacement:
  • 2,030 long tons (2,060 t) surfaced
  • 2,410 long tons (2,450 t) submerged
Length: 295 ft 3 in (89.99 m)
Beam: 26 ft 6 in (8.08 m)
Draught: 18 ft (5.5 m)
Installed power: 2 × electric generators, 2560 kW
Propulsion:
  • 2 × Admiralty Standard Range 16WS-ASR diesels, 3,680 bhp
  • 2 × electric motors, 6,000 shp
  • 2 shafts
Speed:
  • 12 knots (22 km/h; 14 mph) surfaced
  • 17 kn (31 km/h; 20 mph) submerged
Range: 9,000 nautical miles (17,000 km; 10,000 mi) at 12 kn (22 km/h; 14 mph) surfaced
Complement: 6 officers, 64 ratings
Armament: 8 × 21 in (533 mm) torpedo tubes (6 bow, 2 stern)

Design and construction
Main article: Oberon-class submarine

The submarine, built by Vickers Shipbuilding and Engineering at their shipyard in Barrow, was laid down on 18 November 1971, and launched on 22 November 1972.[1] During construction, a fire seriously damaged the submarine.[1] The submarine was towed to Chatham Dockyard, where the 60-foot (18 m) central section was cut out and replaced.[1] The fire was found to have originated in the cabling, and prompted the recabling of all under-construction Oberons.[2] She was commissioned into the Brazilian Navy on 10 December 1977.[2]

Operational history

Decommissioning and fate

Tonelero was listed as active in the 1998-99 edition of Jane's Fighting Ships.[2]

On 26 December 2000 the Tonelero sank at her mooring in the Rio de Janeiro navy yards due to crew error. All 9 crew members aboard escaped from the submarine.[3]

gollark: I couldn't live with myself if I did that...
gollark: Sure there is. I want screens full of tau digits.
gollark: Except I can't really just multiply by two, because that limits me to some small amount of digits supported by floating points.
gollark: * pi digits
gollark: I mean digits unconstrained by floating point inaccuracy or whatever, like those formuale for Pi.

See also
  • Ships of the Brazilian Navy

References
  1. Moore, John, ed. (1977). Jane's Fighting Ships 1977-78. Jane's Fighting Ships (80th ed.). London: Jane's Yearbooks. p. 44. ISBN 0531032779. OCLC 18207174.
  2. Sharpe, Richard, ed. (1998). Jane's Fighting Ships 1998-99. Jane's Fighting Ships (101st ed.). Coulsdon, Surrey: Jane's Information Group. p. 58. ISBN 071061795X. OCLC 39372676.
  3. "Brazil investigates sub sinking". news.bbc.co.uk. Retrieved 27 February 2020.


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