Leander-class frigate

The Leander-class, or Type 12I frigates, comprising twenty-six vessels, was among the most numerous and long-lived classes of frigate in the Royal Navy's modern history. The class was built in three batches between 1959 and 1973. It had an unusually high public profile, due to the popular BBC television drama series Warship. The Leander silhouette became synonymous with the Royal Navy through the 1960s until the 1980s. Only two Leander Class Frigates survive today, serving in the Ecuadorian Navy as of February 2015.


Leander-class frigate
Class Ship
Type Frigate
Manufacturer Harland & Wolff Heavy Industries
Origin United Kingdom - UK (Great Britain)
Country Name Origin Year
United Kingdom - UK (Great Britain) 1963
Country Name Operational Year Retirement Year
Chile 1963 1990 View
Ecuador 1963 1990 View
India 1963 1990 View
Indonesia 1963 1990 View
Netherlands 1963 1990 View
Pakistan 1963 1990 View
United Kingdom - UK (Great Britain) 1963 1990 View
New Zealand 1963 1990 View
ManufacturerName Production From Production To Quantity
Harland & Wolff Heavy Industries View
Yarrow Shipbuilders View
Vickers-Armstrongs View
Cammell Laird View
John Brown & Company View
Swan Hunter View
Wallsend Slipway & Engineering Company View
Parsons Marine Steam Turbine Company View
Scotts Shipbuilding and Engineering Company View
Fairfield Shipbuilding and Engineering Company View
J. Samuel White View
HMNB Devonport View
Alexander Stephen and Sons View
David Brown Ltd. View
HMNB Portsmouth View
John I. Thornycroft & Company View
Hawthorn Leslie and Company View
Chatham Dockyard View

The Leander design or derivatives of it were built for other navies:

  • Royal New Zealand Navy as the Leander class
  • Chilean Navy: Condell class
  • Royal Australian Navy: River class
  • Indian Navy: Nilgiri class
  • Royal Netherlands Navy: Van Speijk class
Pennant Name (a) Hull builder
(b) Main machinery manufacturers
Laid down Launched Accepted into service Commissioned Estimated building cost
First 10, Y-100 machinery
F109 Leander (a) & (b) Harland & Wolff Ltd, Belfast. 10 April 1959 28 June 1961 March 1963 27 March 1963 £4,630,000
F104 Dido (a) & (b) Yarrow & Co Ltd, Glasgow. 2 December 1959 22 December 1961 September 1963 18 September 1963 £4,600,000
F127 Penelope (a) Vickers-Armstrongs (Shipbuilders) Ltd, Newcastle
(b) Vickers-Armstrongs (Engineers) Ltd, Barrow-in-Furness
14 March 1961 17 August 1962 November 1963 31 October 1963 £4,600,000
F114 Ajax (a) & (b) Cammell Laird & Co (Shipbuilders and Engineers) Ltd,Birkenhead. 19 October 1959 16 August 196 December 1963 10 December 1963 £4,800,000
F10 Aurora (a) & (b) John Brown & Co Ltd,Clydebank 1 June 1961 28 November 1962 April 1964 9 April 1964 £4,650,000
F18 Galatea (a) Swan, Hunter & Wigham Richardson Ltd, Wallsend-on-Tyne
(b) The Wallsend Slipway & Engineering Co Ltd, Wallsend-on-Tyne (steam turbines)
(b) Parsons Marine Turbines Co Ltd, Wallsend-on-Tyne (gearing).
29 December 1961 23 May 1963 April 1964 25 April 1964 £4,500,000
F15 Euryalus (a) Scotts Shipbuilding & Engineering Co Ltd,Greenock
(b) Scotts Shipbuilding & Engineering Co Ltd (steam turbines)
(b) Fairfield Shipbuilding & Engineering Co Ltd, Glasgow (gearing).
2 November 1961 6 June 1963 September 1964 16 September 1964 £4,350,000
F39 Naiad (a) Yarrow & Co Ltd, Glasgow
(b) Yarrow & Co Ltd, Glasgow (steam turbines)
(b) Parsons Marine Turbines Co Ltd, Wallsend-on-Tyne (gearing).
30 October 1962 4 November 1963 March 1965 15 March 1965 £4,750,000
F38 Arethusa (a) JS White & Co Ltd, Cowes, Isle of Wight
(b) JS White & Co Ltd, Cowes, Isle of Wight (steam turbines)
(b) Parsons Marine Turbines Co Ltd, Wallsend-on-Tyne (gearing).
7 September 1962 5 November 1963 November 1965 24 November 1965 £4,850,000
F28 Cleopatra (a) HM Dockyard,Devonport
(b) Cammell Laird & Co (Shipbuilders & Engineers) Ltd, Birkenhead (turbines)
(b) John Brown & Co Ltd, Clydebank (gearing).
19 June 1963 25 March 1964 February 1966 4 January 1966 £5,300,000
Second 6, Y-136 machinery
F42 Phoebe (a) Alexander Stephen & Sons Ltd, Linthouse, Glasgow
(b) Alexander Stephen & Sons Ltd, Linthouse, Glasgow (steam turbines)
(b) David Brown & Co Ltd, Huddersfield (gearing).
3 June 1963 8 July 1964 April 1966 15 April 1966 £4,750,000
F45 Minerva (a) Vickers Ltd, Shipbuilding Group, Newcastle
(b) Alexander Stephen & Sons Ltd, Linthouse, Glasgow (steam turbines)
(b) David Brown & Co Ltd, Huddersfield (gearing).
26 July 1963 19 December 1964 May 1966 14 May 1966 £4,700,000
F40 Sirius (a) HM Dockyard,Portsmouth
(b) JS White & Co Ltd, Cowes, Isle of Wight (turbines)
(b) David Brown & Co Ltd, Huddersfield (gearing).
9 August 1963 22 September 1964 June 1966 15 June 1966 £5,600,000
F52 Juno (a) JI Thornycroft Ltd, Southampton
(b) JI Thornycroft Ltd, Southampton (steam turbines)
(b) David Brown & Co Ltd, Huddersfield (gearing)
16 July 1964 24 November 1965 July 1967 18 July 1967 £5,020,000
F56 Argonaut (a) Hawthorn Leslie,Hebburn
(b) JS White & Co Ltd, Cowes, Isle of Wight (steam turbines)
(b) David Brown & Co Ltd, Huddersfield (gearing).
27 November 1964 8 February 1966 September 1967 17 August 1967 £5,000,000
F47 Danae (a) HM Dockyard, Devonport
(b) JS White & Co Ltd, Cowes, Isle of Wight (steam turbines)
(b) Fairfields (Glasgow) Ltd (gearing).
16 December 1964 31 October 1965 October 1967 7 September 1967 £5,720,000
Broad-beamed Leander Y-160 machinery
F75 Charybdis (a) Harland & Wolff Ltd, Belfast
(b) Vickers Ltd, Engineering Group, Barrow-in-Furness.
27 January 1967 28 February 1968 June 1969 2 June 1969 £6,330,000
F58 Hermione (a) Yarrow & Co Ltd, Glasgow
(b) Alex Stephen & Sons Ltd, Linthouse, Glasgow (steam turbines)
(b) Vickers Ltd, Engineering Group, Barrow-in-Furness (gearing).
6 December 1965 26 April 1967 July 1969 11 July 1969 £6,400,000
F60 Jupiter (a) Yarrow & Co Ltd, Glasgow
(b) JS White & Co Ltd, Cowes, Isle of Wight (steam turbines)
(b) Vickers Ltd, Engineering Group, Barrow-in-Furness (gearing).
3 October 1966 4 September 1967 August 1969 9 August 1969 £6,100,000
F69 Bacchante (a) Vickers Ltd, Shipbuilding Group, Newcastle
(b) JS White & Co Ltd, Cowes, Isle of Wight (steam turbines)
(b) Vickers Ltd, Engineering Group, Barrow-in-Furness (gearing).
27 October 1966 29 February 1968 October 1969 17 October 1969 £6,200,000
F57 Andromeda (a) HM Dockyard, Portsmouth
(b) JS White & Co Ltd, Cowes, Isle of Wight (steam turbines)
(b) David Brown & Co Ltd, Huddersfield (gearing).
25 May 1966 24 May 1967 December 1969 2 December 1968 £6,700,000
F71 Scylla (a) HM Dockyard, Devonport
(b) JS White & Co Ltd (turbines)
(b) David Brown & Co Ltd (gearing).
17 May 1967 8 August 1968 February 1970 12 February 1970 £6,600,000
F12 Achilles (a) Yarrow & Co Ltd, Glasgow
(b) JS White & Co Ltd (turbines)
(b) David Brown & Co Ltd (gearing).
1 December 1967 21 November 1968 July 1970 9 July 1970 £6,270,000
F16 Diomede (a) Yarrow & Co Ltd, Glasgow
(b) JS White & Co Ltd (turbines)
(b) David Brown & Co Ltd (gearing).
30 January 1968 15 April 1969 April 1971 2 April 1971 £5,980,000
F70 Apollo (a) Yarrow & Co Ltd, Glasgow
(b) JS White & Co Ltd (turbines)
(b) David Brown & Co Ltd (gearing).
1 May 1969 15 October 1970 10 June 1972 28 May 1972 £6,573,000
F72 Ariadne (a) Yarrow & Co Ltd, Glasgow
(b) JS White & Co Ltd (turbines)
(b) David Brown & Co Ltd (gearing).
1 November 1969 10 September 1971 10 February 1973 10 February 1973 £6,576,000

Name: Leander class
Operators: Royal Navy
Indian Navy
Royal New Zealand Navy
Chilean Navy
Royal Netherlands Navy
Pakistan Navy
Ecuadorian Navy
Indonesian Navy
Preceded by: Rothesay-class
Salisbury-class
Leopard-class
Tribal-class
Succeeded by: Type 21 frigate
In commission: 1963 - early 1990s
Completed: 26
Active: 0
Lost: 0
Retired: 26 (3 as artificial reefs, 2 as targets)
General characteristics
Type: Frigate
Displacement: 2,500 tons (later 2,790 tons) standard
2,962 tons (later 3,300 tons) full load
Length: 113.4 metres (372 ft)
Beam: 13.1 metres (43 ft)
Draught: 4.5 metres (15 ft)
Propulsion: 2 Babcock & Wilcox oil-fired boilers, geared steam turbines, 22,370 kilowatts (30,000 hp), 2 shafts
Speed: 27 knots (50 km/h; 31 mph)
Range: 7,400 kilometres (4,600 mi; 4,000 nmi) at 15 knots (28 km/h; 17 mph)
Complement: 260
Sensors and
processing systems:
Radar:
Type 965 (air warning radar removed in batch 1 ships), Type 992 Q, Type 903, Type 974/978
Sonar:
Type 162, 184, 199, & later type 2031 towed array sonar
Armament: Initial:
2 x 4.5 inch guns (1 x twin mounting Mk6)
1 x Seacat surface-to-air missile launcher
2 x 20mm guns (single mountings)
1 × ASW Limbo mortar
Batch 1 - Ikara:
1 × Ikara Anti submarine missile Launcher
2 × Seacat surface-to-air missile Launchers
2 × 40mm guns - single mountings
2 × triple 324 mm (12.75) STWS-1 tubes for Mk 46 andStingray ASW torpedoes
1 × Limbo ASW Mortar
Batch 2 - Exocet/Seacat:
4 × MM.38 Exocet anti ship missile launchers
3 × Seacat surface-to-air missile launchers
2 × 40mm guns - single mountings
2 × triple 324 mm (12.75 inch) STWS-1 tubes for Mk 46 and Stingray ASW torpedoes
Batch 3 - Exocet/Seawolf:
4 × MM.38 Exocet anti ship missile launchers
1 × sextuple GWS.25 launcher with 30 sea wolf SAMS
2 × 20mm AA guns
2 × triple 324 mm (12.75) STWS-1 tubes for Mk 46 and Stingray ASW torpedoes
Aircraft carried: Initial and Batch 1:
1 × Westland Wasp ASW helicopter
Batch 2 and Batch 3:
1 × Westland Lynx HAS.Mk 2 ASW helicopter

End notes