Chilean submarine O'Brien (S22)

	O'Brien (S22) in 1999
History
Chile
Name	O'Brien
Namesake	John Thomond O'Brien
Builder	Scott Lithgow
Laid down	17 January 1971
Launched	21 December 1972
Commissioned	15 April 1976
Decommissioned	2005?
Identification	S22
Status	Museum ship
General characteristics
Class and type	Oberon-class submarine
Displacement	Surface 2,030 tons, Submerged 2,410 tons
Length	295.2 ft (90.0 m)
Beam	26.5 ft (8.1 m)
Draught	18 ft (5.5 m)
Propulsion	2 × Admiralty Standard Range 16WS - ASR diesels. 3,680bhp 2 electric generators. 2560kw. 2 electric motors. 6000shp. 2 shafts
Speed	Surface 12 knots (22 km/h; 14 mph), Submerged 17 knots (31 km/h; 20 mph)
Endurance	9,000 nautical miles (17,000 km; 10,000 mi) at 12 knots (22 km/h; 14 mph) surfaced
Complement	65
Sensors and ; processing systems	Atlas Elektronik CSU 90 suite, BAC Type 2007 flank array
Armament	6 21-inch (533 mm) torpedo tubes, 22 torpedoes

The Chilean submarine O'Brien was an Oberon-class submarine in the Chilean Navy.

Design and construction

The submarine, built by Scottish company Scott Lithgow, was laid down on 17 January 1971, and launched on 21 December 1972.^[1] The planned July 1974 completion was delayed by the need to redo internal cabling.^[1] She was commissioned into the Chilean Navy on 15 April 1976.^[2] The submarine was named after John Thomond O'Brien, who fought in the Chilean War of Independence.^[3]

Operational history

O'Brien was in service from the mid-1970s until the mid-2000s.

Decommissioning and fate

O'Brien and sister boat Hyatt were replaced by the Thomson-class submarines.

She is now permanently docked in the Chilean city of Valdivia where she is open to visitors as a museum ship.^[4]

References

^ ^a ^b Moore, John, ed. (1977). Jane's Fighting Ships 1977-78. Jane's Fighting Ships (80th ed.). London: Jane's Yearbooks. p. 81. ISBN 0531032779. OCLC 18207174.
^ Sharpe, Richard, ed. (1998). Jane's Fighting Ships 1998-99. Jane's Fighting Ships (101st ed.). Coulsdon, Surrey: Jane's Information Group. p. 106. ISBN 071061795X. OCLC 39372676.
^ JT O'Brien
^ "Museo Naval Submarino O'Brien". Archived from the original on 18 February 2020. Retrieved 22 October 2019.