HMS Andromeda - Technical Specifications

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General

• Type: Leander-class (Type 12I) general-purpose frigate – Batch 3 Broad-Beamed, Sea Wolf conversion
• Builder: HM Dockyard, Portsmouth (last warship built at this yard)
• Ordered: 12 January 1965
• Laid down: 25 May 1966
• Launched: 24 May 1967
• Commissioned: 2 December 1968
• Decommissioned (RN): 1993
• Fate: Sold to India 1995 as INS Krishna; decommissioned 24 May 2012; sunk as target, Bay of Bengal, 2012
• Pennant number: F57 (“The Heinz Varieties”)

• Length overall: 372 ft (113.4 m)
• Length at waterline: 360 ft (109.7 m)
• Beam: 43 ft (13.1 m) – Broad-Beamed variant
• Draught: 19 ft (5.8 m) maximum
• Displacement: 2,500 tons standard; 2,962 tons full load (as built) – rising to 2,790 / 3,300 tons after Sea Wolf conversion

• Machinery: Two White-English Electric double-reduction geared steam turbines
• Boilers: Two Babcock & Wilcox boilers
• Shafts: Two
• Power: 30,000 shaft horsepower
• Speed: 28 knots maximum (25 knots after Sea Wolf conversion)
• Range: 4,600 nautical miles at 15 knots

• Guns: 1 × twin 4.5-inch Mark 6 turret
• Missiles: 1 × quadruple Sea Cat GWS-22 SAM launcher
• ASW: 1 × three-barrelled Limbo Mk 10 mortar
• Aircraft: 1 × Westland Wasp HAS.1 helicopter
• Armament (After Sea Wolf Conversion, 1980)
• Missiles (SAM): 1 × sextuple Sea Wolf GWS-25 launcher
• Missiles (SSM): 4 × MM38 Exocet anti-ship missiles
• Torpedoes: 2 × triple STWS-1 324mm torpedo tubes
• Aircraft: 1 × Westland Lynx HAS.2/3 helicopter

As Built: Type 965 air-search radar, Type 993 target-indicating radar, Type 978 navigation radar, MRS3 fire control, Type 184 sonar, Type 162 bottom-search sonar, Type 170 attack sonar, Type 199 variable depth sonar.

After Conversion: Type 967 air-search radar, Type 968 surface-search radar, Type 1006 navigation radar, Type 910 Sea Wolf tracker, Type 2016 long-range sonar, Type 162 bottom-search sonar.

Approximately 260 officers and ratings (as built). Varied slightly by commission and role.