NAVYPEDIA

Photo

O'Brien 1979

Ships

Name	No	Yard No	Builder	Laid down	Launched	Comm	Fate
O'Brien	22		Scott-Lithgow, Greenock, UK	17.1.1971	21.12.1972	15.4.1976	stricken 3.2003
Hyatt	23		Scott-Lithgow, Greenock, UK	16.1.1972	26.9.1973	27.9.1976	stricken 4.2000

Technical data

Displacement standard, t	1650
Displacement normal, t	2070 / 2450
Length, m	87.5 pp 89.9 oa
Breadth, m	8.07
Draught, m	5.48
No of shafts	2
Machinery	2 Admiralty Standard Range 16VVS-AS21 diesel-generators, 2 electric motors
Power, h. p.	3680 / 6000
Max speed, kts	15 / 17.5
Fuel, t	diesel oil 253 (emergency 379)
Endurance, nm(kts)	9000(12) /
Armament	8 - 533 TT (6 bow, 22 Mk 8, SST-4 + 2 aft, 4 Mk 23)
Electronic equipment	type 1006 radar, type 2007, type 187, type 197, type 719 sonars, Porpoise ECM suite, Mk 2, Mk 4 Mod.1B torpedo decoy launchers
Complement	68
Diving depth operational, m	230

Standard scale images

Graphics

Project history

Both units of British Oberon class were ordered in 1969. They suffered delays in fitting out due to recabling.

Modernizations

1994, both: - 2 - 533 TT (aft), type 2007, type 187, type 197, type 719 sonars; + CSU-90 sonar suite, ISUS-90 CCS

Naval service

Hyatt and O'Brien collided with each other on surface in April 1987.