NAVYPEDIA

Photo

Riachuelo 1977

Ships

Name	No	Yard No	Builder	Laid down	Launched	Comm	Fate
Humaitá	S20		Vickers, Barrow, UK	3.11.1970	5.10.1971	18.6.1973	stricken 4.1996
Tonelero	S21		Vickers, Barrow, UK	18/21/1970	22.11.1972	8.9.1978	foundered 25.12.2000
Riachuelo	S22		Vickers, Barrow, UK	26.5.1973	6.9.1975	12.3.1977	stricken 11.1997

Technical data

Displacement standard, t	1620
Displacement normal, t	2040 / 2410
Length, m	89.9
Breadth, m	8.07
Draught, m	5.48
No of shafts	2
Machinery	2 ASR 16 VVS-ASR1 diesel-generators / 2 English Electric electric motors
Power, h. p.	3480 / 6000
Max speed, kts	12 / 17
Fuel, t	diesel oil 258
Endurance, nm(kts)	11000(11) (snorkel) /
Armament	8 - 533 TT (6 long fwd, 18 Mk 24 Tigerfish, 2 short aft, 4 Mk 37 Mod. 2)
Electronic equipment	type 1006 radar, type 187, type 2007 sonars, UA-4 ECM suite
Complement	62
Diving depth operational, m	230

Standard scale images

Graphics

Project history

The first two units were ordered in 1969 and the third in 1972. Completion of Tonelero was delayed by a serious fire. She was towed to Chatham Dockyard where the centre 18m section was replaced and she was rewired. This lire caused the recabling of all Oberon units then under construction.

Modernizations

None.

Naval service

Tonelero, used for several years for underway training, sank alongside pier at Rio de Janeiro 25.12.2000 during the latter stages of a minor overhaul; the submarine was raised 4.1.2001 but was stricken 21.6.2001.