NAVYPEDIA

Photo

Andromeda 1981

Ships

Name	No	Yard No	Builder	Laid down	Launched	Comp	Fate
Hermione	F58	697	Stephen, Govan	10.12.1965	26.4.1967	11.7.1969	BU 9.1997
Andromeda	F57		Portsmouth DYd	25.5.1966	24.5.1967	4.7.1968	to India 8.1995 (TS Krishna)
Jupiter	F60	2289	Yarrow, Scotstoun	3.10.1966	4.9.1967	13.8.1969	BU 9.1997
Bacchante	F69	189	Vickers-Armstrong, Tyne	25.10.1966	29.2.1968	5.12.1969	to New Zealand 10.1982 (Wellington)
Charybdis	F75	1675	Harland & Wolff, Belfast	27.1.1967	28.2.1968	6.6.1969	sunk as target 12.6.1993
Scylla	F71		Devonport DYd	17.5.1967	8.8.1968	14.2.1970	sunk as dive site 27.3.2004
Achilles	F12	2365	Yarrow, Scotstoun	27.10.1967	21.11.1968	9.6.1970	to Chile 12.1990 (Ministro Zenteno)
Diomede	F16	2366	Yarrow, Scotstoun	30.1.1968	15.4.1969	2.4.1971	to Pakistan 7.1988 (شمشیر [Shamsher])
Apollo	F70	1002	Yarrow, Scotstoun	21.11.1969	15.10.1970	28.5.1972	to Pakistan 10.1988 (ذولفقار [Zulfiquar])
Ariadne	F72	1003	Yarrow, Scotstoun	1.5.1970	10.9.1971	10.2.1973	to Chile 6.1992 (General Baquedano)

Technical data

Displacement standard, t	2500
Displacement full, t	2962
Length, m	109.7 pp 113.4 oa
Breadth, m	13.1
Draught, m	5.50 max
No of shafts	2
Machinery	2 sets White-English Electric Y-160 geared steam turbines, 2 Babcock & Wilcox boilers
Power, h. p.	30000
Max speed, kts	28
Fuel, t	oil 460
Endurance, nm(kts)	4000(15)
Armament	1 x 4 Sea Cat GWS22 SAM (12 Sea Cat), 1 x 2 - 120/45 Mk 6, 1 x 3 - 305 Limbo Mk 10 ASWRL, 1 helicopter (Wasp)
Electronic equipment	F12, 16, 57, 58, 60, 69, 71, 75: type 965 AKE-1, type 993, type 903, type 904, type 978 radars, type 162, type 170B, type 184 sonars, UA-8/9, type 668 or type 669 ECM suites, 2x Corvus decoy RL F70, 72: type 965 AKE-1, type 993, type 903, type 904, type 978 radars, type 162, type 170B, type 184 sonars, UA-8/9, UA-13, type 668 or type 669 ECM suites, 2x Corvus decoy RL
Complement	251 - 263

Standard scale images

Graphics

Project history

To provide more fuel stowage and a better margin for future growth, the last ten of the Leander class were 'kippered' by adding 0.6m to the beam. This reduced speed slightly, but improved stability and endurance, both items of greater fighting value. Although referred to in the RN as Type 12s or 'broad-beam Leanders' they formed a separate class, with improved machinery, a difference enhanced by the radical reconstruction from 1977. The steady improvement in machinery stated in the original class continued, and these ships had the Y-160 plant. Speed dropped by half a knot because of increased displacement, but the improved degree of automation made far more efficient use of the machinery.

As built the ten ships were identical with the Leander class in equipment, but the extra internal volume meant that they could be reconstructed to carry two important new systems: the long-range Type 2016 sonar and the Seawolf GWS25 Mod 0 missile system, capable of destroying sea-skimming missiles as well as supersonic aircraft. The two systems were inter-dependent because the Type 2016 was intended for detecting fast submarines in the GIUK Gap, far from the support of shore-based aircraft. The most likely opposition to be encountered was surface attack, against which Exocet missiles provided a long-range defence, and missile attack, either from bombers or from submarines. The Sea Wolf system was intended particularly to counter the 'pop-up' missile fired from Soviet 'Charlie' and 'Papa' class submarines.

Modernizations

1983, Achilles, Apollo, Ariadne: - type 993 radar; + 3 x 1 - 20/70 Mk 7, type 994 radar

1983, Diomede: - type 993 radar; + 1 x 2 - 20/70 Mk 12, 2 x 1 - 20/70 Mk 7; + type 994 radar

1981, Andromeda; 1983, Jupiter; 1984, Scylla: as Batch 3A - armament consisted of 4 x 1 MM38 Exocet SSM (4 MM38), 1 x 6 Sea Wolf GWS25 SAM (32 Sea Wolf), 2 x 1 - 20/70 Mk 7, 2 x 3 - 324 STWS.1 TT, 1 helicopter (Lynx); type 1006, type 967/968, type 910 radars, type 162M, type 2008, type 2016 sonars, UA-A1, 2x type 670 ECM suites, 2x Corvus decoy RL, type 182 torpedo decoy, CAAIS CCS; 2790/3300t, complement 260

1982, Charybdis; 1983, Hermione: as Batch 3A - armament consisted of 4 x 1 MM38 Exocet SSM (4 MM38), 1 x 6 Sea Wolf GWS25 SAM (32 Sea Wolf), 2 x 1 - 20/90 GAM-B01, 2 x 1 - 20/70 Mk 7, 2 x 3 - 324 STWS.1 TT, 1 helicopter (Lynx); type 1006, type 967/968, type 910 radars, type 162M, type 2008, type 2016 sonars, UA-A1, 2x type 670 ECM suites, 2x Corvus decoy RL, type 182 torpedo decoy, CAAIS CCS; 2790/3300t, complement 260

Naval service

No significant events.