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FIGHTING SHIPS OF THE WORLD
UNITED KINGDOM
ESCORTS
NORFOLK frigates (1990 - 2002)


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Northumberland 2003

Ships


Name No Yard No Builder Laid down Launched Comp Fate
Norfolk F230 1033 Marconi Marine (YSL), Scotstoun 14.12.1985 10.7.1987 1.6.1990 to Chile 11.2006 (Almirante Cochrane)
Marlborough F233   Swan Hunter, Wallsend 22.10.1987 21.1.1989 14.6.1991 to Chile 5.2008 (Almirante Condell)
Argyll F231 1035 Marconi Marine (YSL), Scotstoun 20.3.1987 8.4.1989 31.5.1991 in service (2019)
Lancaster F229 1036 Marconi Marine (YSL), Scotstoun 18.12.1987 24.5.1990 1.5.1992 in service (2019)
Iron Duke F234 1040 Marconi Marine (YSL), Scotstoun 12.12.1988 2.3.1991 20.5.1993 in service (2019)
Monmouth F235 1041 Marconi Marine (YSL), Scotstoun 1.6.1989 23.11.1991 24.9.1993 in service (2019)
Montrose F236 1042 Marconi Marine (YSL), Scotstoun 1.11.1989 31.7.1992 2.6.1994 in service (2019)
Westminster F237   Swan Hunter, Wallsend 18.1.1991 4.2.1992 13.5.1994 in service (2019)
Northumberland F238   Swan Hunter, Wallsend 4.4.1991 4.4.1992 29.11.1994 in service (2019)
Richmond F239   Swan Hunter, Wallsend 16.2.1992 6.4.1993 22.6.1995 in service (2019)
Somerset F82 1043 Marconi Marine (YSL), Scotstoun 12.10.1992 25.6.1994 20.9.1996 in service (2019)
Grafton F80 1044 Marconi Marine (YSL), Scotstoun 13.5.1993 5.11.1994 29.5.1997 to Chile 3.2007 (Almirante Lynch)
Sutherland F81 1045 Marconi Marine (YSL), Scotstoun 14.10.1993 9.3.1996 4.7.1997 in service (2019)
Kent F78 1051 Marconi Marine (YSL), Scotstoun 16.4.1997 27.5.1998 8.6.2000 in service (2019)
Portland F79 1052 Marconi Marine (YSL), Scotstoun 14.1.1998 15.5.1999 3.5.2001 in service (2019)
St. Albans F83 1053 Marconi Marine (YSL), Scotstoun 18.4.1999 6.5.2000 6.6.2002 in service (2019)


Technical data


Displacement standard, t

3600

Displacement full, t

4300

Length, m

123.0 pp 133.0 oa

Breadth, m

15.0 wl 16.1 deck

Draught, m

4.30 hull 5.50 max

No of shafts

2

Machinery

F229-231, 233-236: CODLAG: 2 Rolls-Royce Spey SM1A gas turbines + 4 Paxman Valenta 12RPA 200CZ diesel-generators, 2 electric motors

F237-239, 78-83: CODLAG: 2 Rolls-Royce Spey SM1C gas turbines + 4 Paxman Valenta 12RPA 200CZ diesel-generators, 2 electric motors

Power, h. p.

F229-231, 233-236: 37540 + 4000 = 41540

F237-239, 78-83: 52300 + 4000 = 56300

Max speed, kts

F229-231, 233-236: 28

F237-239, 78-83: 30

Fuel, t

gas turbine oil + diesel oil 800

Endurance, nm(kts)

7800(17)

Armament

2 x 4 Harpoon SSM (8 RGM-84C/GWS.60), 1 x 32 Sea Wolf GWS.26 SAM (VLS, 32 Sea Wolf GWS26), 1 x 1 - 114/55 Mk 8, 2 x 1 - 30/75 DS-30B, 2 x 1 - 20/90 GAM-B01, 4 - 324 DMTS90 TT, 1 helicopter (Lynx)

Electronic equipment

F229-231, 233-236: type 996(1), 2x type 911, type 1007 radars, type 2050NE, type 2031Z sonars, GSA.8/GPEOD Sea Archer E/O director, UAF(1), 2x type 675 ECM suites, 4x Sea Gnat/Siren UAF-1 decoy RL, 2x DEC laser dazzlers, 4x DLF(2) floating decoy launchers, type 182 torpedo decoy, DNA(1) SSCS CCS

F237, 238: type 996(1), 2x type 911, type 1007 radars, type 2050NE, type 2031Z sonars, GSA.8/GPEOD Sea Archer E/O director, UAF(1), 2x type 675 ECM suites, 4x Sea Gnat/Siren UAF-1 decoy RL, 2x DEC laser dazzlers, 4x DLF(2) floating decoy launchers, type 2070 torpedo decoy, DNA(1) SSCS CCS

F239, 78-83: type 996(1), 2x type 911, type 1007 radars, type 2050NE sonar, GSA.8/GPEOD Sea Archer E/O director, UAT(1), 2x type 675 ECM suites, 4x Sea Gnat/Siren UAF-1 decoy RL, 2x DEC laser dazzlers, 4x DLF(2) floating decoy launchers, DNA(1) SSCS CCS

Complement

169



Standard scale images


<i>Lancaster </i>2010
Lancaster 2010
<i>Argyll </i>2010
Argyll 2010


Graphics


<i>Northumberland </i>2003
Northumberland 2003
<i>Lancaster </i>2008 <i>Many thanks to Wolfgang Stöhr for additional information on this page.</i>
Lancaster 2008 Many thanks to Wolfgang Stöhr for additional information on this page.


Project history


Although the Type 22 was recognised as a highly efficient ASW platform, alarm at its high cost led to a call for a cheaper frigate, relying on the Type 2031Z towed array sonar rather than the big Type 2050 and Lynx helicopters. Out of this has emerged the Type 23, expanded to include a bow-mounted sonar, a large ASW helicopter and more general-purpose qualities. Although Falklands experience resulted in improved fire precautions and damage control, the decision to incorporate a double-headed Sea Wolf SAM system predated that conflict. By the time the design was finalized BAE's vertically launched version was nearly ready for trials, and it was selected in place of the earlier lightweight version of GWS25.

The design is optimized for towed array operations, so silencing of machinery was a top priority. Finally a unique combined diesel electric and gas turbine (CODLAG) was chosen, using Spey gas turbines for main drive, and switching to a diesel-electric drive for slow but silent running when using the towed array. The advantage of CODLAG is the elimination of gearbox noise, and the generators are positioned above the waterline to reduce radiated noise.

The opportunity was taken to incorporate ' stealth' features to enhance survivability in surface warfare. This takes the form of a flared hull and the elimination of right angles and radar-reflecting corners in the superstructure, etc. It is claimed that the Type 23 is 'invisible' to the seekers of the current range of anti-ship missiles, and it also claimed to be the quietest ASW ship in the world.

Modernizations


late 1990s, all: - type 996(1) radar; + type 996(2), type 1008 radars

early 2000s, Lancaster, Iron Duke; late 2000s, Sutherland, Somerset, St. Albans, Westminster, Northumberland, Richmond; early 2010s, Monmouth, Montrose, Kent, Portland: - 1 Lynx helicopter; + 1 Merlin helicopter

2004, Westminster; 2005, Northumberland: - type 2031Z sonar, type 2070 torpedo decoy, 2x type 675 ECM suites, 4x DLB decoy RL; + type 2070 torpedo decoy, 2x type 695 ECM suites, 4x DLH decoy RL

2005, Richmond; 2006, Somerset; 2007, St. Albans; 2008, Sutherland; 2011, Kent; 2012, Portland: - 2x type 675 ECM suites, 4x DLB decoy RL; + type 2087 sonar, type 2170 SSTDS anti-torpedo system, 2x type 695 ECM suites, 4x DLH decoy RL

2006-2008, Norfolk, Lancaster, Iron Duke, Monmouth, Montrose, Westminster, Northumberland, Richmond; 2007-2011, Argyll, Somerset, Sutherland, Kent, Portland, St. Albans: - 1 x 1 - 114/55 Mk 8, 2 x 1 - 30/75 DES-30B; + 1 x 1 - 114/55 Mk 8 Mod. 1, 2 x 1 - 30/75 DS-30M Mk 2, SIGMA IR detector, Shaman/Sextant ISTAR communication interceptor

2006-2011, all survived: - Sea Wolf GWS.26 SAM; + Sea Wolf GWS.26 Mod.1 SAM (VLS, 32 Sea Wolf)

2009-2010, Argyll, Montrose, Westminster; 2011, Lancaster: - Sea Wolf GWS.26 Mod.1 SAM, 4x Sea Gnat/Siren UAF-1 decoy RL, SSCS DNA(1) CCS; + Sea Wolf SWMLU GWS 26 Mod. 1 SAM (32 Sea Wolf), 4x Sea Gnat/Siren UAT-1 decoy RL, CMS-1 DNA(2) CCS

2011, Kent; 2012, Richmond, Portland, St. Albans; 2013, Northumberland: - Sea Wolf GWS.26 Mod.1 SAM, SSCS DNA(1) CCS; + Sea Wolf SWMLU GWS 26 Mod. 1 SAM (32 Sea Wolf), CMS-1 DNA(2) CCS

2013, Iron Duke; 2015, Monomouth: - 4x Sea Gnat/Siren UAF-1 decoy RL; + 4x Sea Gnat/Siren UAT-1 decoy RL

2013, Iron Duke, Somerset; 2014, St. Albans; 2015, Monmouth: - type 996(2), 2x type 911 radars; + Scan Eagle UAVs, type 997 ARTISAN, 2x type 911(1) radars, MIDAS ECM suite

2017-later, Lancaster, Iron Duke, Monmouth, Argyll, Montrose, Westminster, Northumberland: - 1 x 32 Sea Wolf GWS.26 SAM VLS, type 996(2), 2x type 911 radars; + 1 x 32 Cea Ceptor SAM VLS (32 Sea Ceptor), Scan Eagle UAVs, type 997 ARTISAN, 2x type 911(1) radars

Naval service


No significant events.