Duke Class (Type 23 Class) British Frigate
Duke Class
Frigate
Other
Basic Information
Name
Duke Class (Type 23 Class) British Frigate
Designation
Duke Class
Alternate Designation
Duke Class; Type 23 Class
Equipment Type
Frigate
Manufacturer
Yarrow Shipbuilders
Date of Introduction
1990
Description
The Duke Class (Type 23 Class) British Frigate is a class of frigates built for the United Kingdom's Royal Navy. The ships are named after British Dukes, thus leading to the class being commonly known as the Duke class.
Naval & Littoral Specifications
Crew
185
Beam
16.10 m
Draft
5.50 m
Variants
Norfolk
Navy: Royal Navy
Commissioned: 1990
Status: Transferred to Chilean Navy in 2006, and renamed Almirante Cochrane.
Almirante Cochrane
Navy: Chilean Navy
Commissioned: 2006
Status: Active
Note: Transferred from Royal Navy, and renamed Almirante Cochrane.
Marlborough
Navy: Royal Navy
Commissioned: 1991
Status: Transferred to Chilean Navy in 2008, and renamed Almirante Condell.
Almirante Condell
Navy: Chilean Navy
Commissioned: 2008
Status: Active
Note: Transferred to Chilean Navy, and renamed Almirante Cochrane.
Grafton
Navy: Royal Navy
Commissioned: 1997
Status: Transferred to Chilean Navy in 2007, and renamed Almirante Lynch.
Almirante Lynch
Navy: Chilean Navy
Commissioned: 2007
Status: Active
Note: Transferred to Chilean Navy, and renamed Almirante Cochrane.
Argyll
Navy: Royal Navy
Commissioned: 1991
Status: Active
Lancaster
Navy: Royal Navy
Commissioned:1992
Status: Active
Iron Duke
Navy: Royal Navy
Commissioned: 1993
Status: Active
Monmouth
Navy: Royal Navy
Commissioned: 1993
Status: Decommissioned in 2021
Montrose
Navy: Royal Navy
Commissioned:1994
Status: Active
Westminster
Navy: Royal Navy
Commissioned:1994
Status: Active
Northumberland
Navy: Royal Navy
Commissioned: 1994
Status: Active
Richmond
Navy: Royal Navy
Commissioned: 1995
Status: Active
Somerset
Navy: Royal Navy
Commissioned: 1996
Status: Active
Sutherland
Navy: Royal Navy
Commissioned: 1997
Status: Active
Kent
Navy: Royal Navy
Commissioned: 2000
Status: Active
Portland
Navy: Royal Navy
Commissioned: 2001
Status: Active
St Albans
Navy: Royal Navy
Commissioned: 2002
Status: Active
System
Alternative Designation
Duke Class; Type 23 Class
Type
Frigate
Builder
Yarrow Shipbuilders, Glasgow
Crew
185 with accommodation for up to 205
Dimensions
Length
133 m
Height
INA
Beam
16.1 m
Draft
5.5 m
Displacement, Standard
3,556 tons
Displacement, Full Load
4,267 tons
Propulsion System
Engine Name
2 x RR Spey SM1A (F 229–F 236) or SM1C (F 237 onwards)
Engine Type
Gas Turbines
Engine Power
31,100 hp
Generator
4 × 1,510 kW (2,025 hp) Paxman Valenta 12CM diesel generators (Non-PGMU ships)
4 × 1,650 kW (2,210 shp) MTU 12V4000 M53 diesel generators (PGMU ships)
Maximum Range
7,800 n miles (14,445.6 km) at 15 kt (27.8 km/h)
Maximum Speed
28 kt (51.9 km/h)
Missile Weapon Systems
Missile Weapon System #1
Name
8 x McDonnell Douglas RGM-84D Harpoon Block IC
Type
Surface-to-Surface Missile
Active Radar Homing
124+ km
Speed
Mach 0.85
Warhead
221.6 kg
Missile Weapon System #2
Name
1 × 32-cell Sea Ceptor GWS 35 Vertical Launching System (VLS)
Type
Surface-to-Air Missile
Maximum Range
25 km
Speed
Mach 3
Warhead
High-explosive blast fragmentation warhead with proximity and impact fuze
Missile Basic Load
32 ea
Gun Weapon Systems
Main Gun System #1
Name
1 x Vickers Mk 8 Mod 1
Type
Naval Gun
Caliber
114 mm
Rate of Fire
24 rds/min
Maximum Range
27.5 km
Weight of Shell
21 kg
Main Gun System #2
Note:
2 × 30 mm DS30M Mk2 guns, or, 2 × 30 mm DS30B guns
Main Gun System #3
Note:
2 × Miniguns
Main Gun System #4
Note:
4 × General-purpose machine guns
Torpedoes' System
Launcher
2 × twin 324 mm Sting Ray torpedo tubes.
Radar Systems
Air/Surface Search Radar
1 x Type 997 (BAE Systems Artisan); 3D; E/F-band.
Surface Search Radar
1 x Kelvin Hughes SharpEye; E/F-band.
Navigation Radar
1 x Kelvin Hughes Type 1007; I-band.
IFF
1010/1011 or 1018/1019.
Sonar Systems
Active Search and Attack Sonar
1 x Ferranti/Thomson Sintra Type 2050; bow-mounted; active search and attack (being replaced by Ultra Electronics Sonar 2150 starting with F 79).
Towed Passive Array Sonar
1 x Thales Type 2087 (F 78, 79, 81, 82, 83, 237, 238, 239); active low-frequency (500 Hz) towed body with passive array (100 Hz).
Fire Control System
Combat Data Systems
BAE Systems Insyte Surface Ship Command System (DNA 2). Links 11 and 16. 2 Astrium SCOT 5 satcoms. Bowman. Xeres MCS. RNCSS.
Weapon Control System
BASE GSA 8B/GPEOD TV/IR/Laser director [Ref 10]. GWS 60 (for SSM). ASCG for 30 mm.
Aviation Faculties
Flight Deck
Yes
Hanger
Yes
Aircraft (Options 1)
1 × Wildcat HMA2, armed with:
2 × anti-submarine torpedoes (Martlet and Sea Venom ASM initially deployed with RN carrier strike group helicopters in 2021).
Aircraft (Options 2)
1 × Westland Merlin HM2, armed with;
4 × anti-submarine torpedoes.
Protection
Hull Armor
INA
Physical Countermeasures
Outfit DLH; 4 6-barrelled launchers; IR flares, chaff and active RF decoys. Outfit DLF 3B offboard decoys. Ultra Electronics Sonar 2170 surface ship torpedo defense system; towed detection array/decoy; decoy launchers.
Electronic Countermeasures
RESM: Racal UAT; intercept.
CESM: Babcock Hammerhead (to be replaced by Babcock Ardent Wolf)
NBC Water Washdown System
Yes
Details
Country of Origin
United Kingdom
Category
Naval
Naval
Filter Label
D
Classification
Domain
Naval & Littoral
Equipment Status
Active
Dimensions
Length
133 m
Width
16.1 m
Height
—
Weight
—
Operators (2)
United Kingdom
Chile
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