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The Type 42 or Sheffield class, was a class of fourteen guided-missile destroyers that served in the Royal Navy. A further two ships of this class were built for and served with the Argentine Navy.
|Builders||Vickers, Cammell-Laird, Swan Hunter, Vosper Thorneycroft, CFNE Argentina|
|Subclasses||Batches 1, 2 and 3|
|Active||Argentina: 1 (as transport)|
|Lost||UK: 2 (Falklands War)|
|Installed power||50,000 shp (37 MW)|
|Range||4,200 nmi (7,800 km; 4,800 mi) single Tyne RM1C/other shaft trailing at 13.8 kn (25.6 km/h; 15.9 mph)|
|Boats & landing |
|Sensors and |
|Electronic warfare |
|Aviation facilities||Flight deck and enclosed hangar for embarking one helicopter|
The first ship of the class was ordered in 1968 and launched in 1971. Two of the class (Sheffield and Coventry) were sunk in action during the Falklands War of 1982. The Royal Navy used this class of destroyer for 38 years between 1975 and 2013.
No ships of this class remain active in the Royal Navy and one remains in the Argentine Navy. The Royal Navy has replaced them with Type 45 destroyers.
The class was designed in the late 1960s to provide fleet area air defence. In total fourteen vessels were constructed in three batches. In addition to the Royal Navy ships, two more ships were built to the same specifications as the Batch 1 vessels for the Argentine Navy. Hércules was built in the UK and Santísima Trinidad in the AFNE Rio Santiago shipyard in Buenos Aires.
Sheffield and Coventry were lost in the Falklands War to enemy action. This was the first conflict where surface warships of the same design have been on opposite sides since World War II, when four Flower-class corvettes built for France in 1939 were taken over by the Kriegsmarine in 1940. The final ship of the class (Edinburgh) decommissioned on 6 June 2013. One Argentine Navy ship (Hércules) remains in service, the other vessel (Santísima Trinidad) sank whilst alongside in Puerto Belgrano Naval Base in early 2013.
When the Type 82 air-defence destroyers were cancelled along with the proposed CVA-01 carrier by the Labour Government of 1966, the Type 42 was proposed as a lighter and cheaper design with similar capabilities to the Type 82. The class is fitted with the GWS30 Sea Dart surface-to-air missile first deployed on the sole Type 82 destroyer, Bristol. The Type 42s were also given a flight deck and hangar to operate an anti-submarine warfare helicopter, greatly increasing their utility compared to the Type 82, which was fitted with a flight deck but no organic aviation facilities.
The design was budgeted with a ceiling of £19 million per hull but soon ran over budget. The original proposed design (£21 million) was similar to the lengthened 'Batch 3' Type 42s. To cut costs, the first two batches had 47 feet removed from the bow sections forward of the bridge, and the beam-to-length ratio was proportionally reduced. These early, batch 1 Type 42s performed poorly during the contractor's sea trials, particularly in heavy seas, and the hull was examined for other problems. Batch 2 vessels (Exeter onwards) embodied better sensor fits and slight layout modifications. The ninth hull, Manchester, was lengthened in build, as part of a design review. This proved a better hull form at sea and later hulls were built to this specification. Strengthening girders were later designed into the weather deck structure in the batch 1 and 2 ships, and the batch 3 ships received an external 'strake' to counter longitudinal cracking.
The first batch had the 965 or 966 surveillance radar, which had a "slow data-rate". The Type 992Q radar used to designate targets for the gun and missiles lacked Moving Target Indiction (MTI). Though "British radar manufacturers [had] offered to retrofit MTI to these radars... nothing was done." Without MTI, the Type 992Q had difficulty in tracking aircraft when land was behind the aircraft or when there was snow or rain showers. The Type 42 also had "insufficient space for an efficient operations room".
The Type 42 was also equipped with a 4.5 inch Mark 8 naval gun and earlier vessels had six Ships Torpedo Weapon System (STWS) torpedo launchers. Two Phalanx Mk 15 close-in weapon systems (CIWS) were fitted to British Type 42s after the loss of Sheffield to an Exocet missile in 1982.
There have been three batches of ships, batch 1 and 2 displacing 4,820 tonnes and batch 3 (sometimes referred to as the Manchester class) displacing 5,200 tonnes. The batch 3 ships were heavily upgraded, though the proposed Sea Wolf systems upgrades were never fitted. Because of their more general warfare role, both Argentine ships were fitted with the MM38 Exocet, and not with a CIWS.
The electronics suite included one Type 1022 D band long-range radar with Outfit LFB track extractor or one Type 965P long-range air surveillance radar, one Type 996 E band/F band 3D radar for target indication with Outfit LFA track extractor or type 992Q surface search, two Type 909 I/J-band fire-control radars and an Outfit LFD radar track combiner.
All ships were propelled by Rolls Royce TM3B Olympus and Rolls Royce RM1C Tyne marinised gas turbines, arranged in a COGOG (combined gas or gas) arrangement, driving through synchronous self-shifting clutches into a double-reduction, dual tandem, articulated, locked-train gear system and out through two five-bladed controllable pitch propellers. All have four Paxman Ventura 16YJCAZ diesel generators, each generating 1 megawatt of three-phase electric power (440 V 60 Hz).
The first of class, Sheffield, was initially fitted with exhaust deflectors on her funnel tops to guide the high-temperature exhaust efflux sidewards and minimise damage to overhead aerials. As this provided a prominent target for then-new infrared homing missiles, only Sheffield and both the Argentinian Hércules and Santísima Trinidad had these. All subsequent engine uptakes were fitted with 'cheese graters' that mixed machinery space vent air with the engine exhaust to reduce infrared signatures.
Availability and use of the Type 42Edit
This class was originally conceived to be a stopper for long-range strategic bombers from the former Soviet Long Range Aviation/A-VMF and as area defence for carrier battle groups. Seven of the class took part in the Falklands War (Operation Corporate) and the immediate aftermath. The Type 42 provided a capable long-range defence against Argentine air force assets, scoring three confirmed kills. However, Sheffield was hit and disabled by a long-range first-generation air-to-surface missile (Exocet) and sank six days later, Coventry was sunk by conventional iron bombs, and Glasgow was disabled by a single bomb that passed straight through her aft engine room without exploding; an extensive rethink was conducted and future iterations were adopted. Later uses included The Gulf War, when Gloucester shot down a land-based surface-to-surface missile. Type 42s were called upon to carry out fleet contingency ship duties such as West Indies counter drugs operations and Falkland Islands patrol, NATO Mediterranean and Atlantic task group operations, and Persian Gulf patrols. The deployment of Type 23s in lieu of Type 42s to high-intensity mission areas became more prevalent as serviceability and reliability issues dogged Type 42s availability, as did obsolescence of their combat and machinery system equipment.
|Pennant||Name||(a) Hull builder||Ordered||Laid down||Launched||Accepted into service[Note 1]||Commissioned||Estimated building cost[Note 2]|
|Royal Navy – batch 1|
|D80||Sheffield||Vickers Shipbuilders Ltd, Barrow-in-Furness.||14 November 1968||15 January 1970||10 June 1971||16 February 1975||16 February 1975[Note 3]||£23,200,000|
|D86||Birmingham||Cammell Laird & Co, Birkenhead.||21 May 1971||28 March 1972||30 July 1973||26 November 1976||3 December 1976||£31,000,000|
|D87||Newcastle||Swan Hunter Ltd, Wallsend-on-Tyne.||11 November 1971||21 February 1973||24 April 1975||25 February 1978||23 March 1978||£34,600,000|
|D118||Coventry||Cammell Laird & Co, Birkenhead.||21 May 1971||29 January 1973||21 June 1974<||20 October 1978||10 November 1978||£37,900,000|
|D88||Glasgow||Swan Hunter Ltd, Wallsend-on-Tyne.||11 November 1971||16 April 1974||14 April 1976||9 March 1979||24 May 1979||£36,900,000|
|D108||Cardiff||Vickers Shipbuilders Ltd, Barrow-in-Furness (to launching stage)
Swan Hunter Ltd, Hebburn (for completion).
|10 June 1971||6 November 1972||22 February 1974||22 September 1979||24 September 1979||£40,500,000[Note 4]|
|Royal Navy – batch 2|
|D89||Exeter||Swan Hunter Ltd, Wallsend-on-Tyne.||22 January 1976||22 July 1976||25 April 1978||30 August 1980||19 September 1980||£60,100,000|
|D90||Southampton||Vosper Thornycroft Ltd, Woolston.||17 March 1976||21 October 1976||29 January 1979||17 August 1981||31 October 1981||£67,500,000|
|D92||Liverpool||Cammell Laird & Co, Birkenhead.||27 May 1977||5 July 1978||25 September 1980||12 May 1982||1 July 1982||£92,800,000|
|D91||Nottingham||Vosper Thornycroft Ltd, Woolston.||1 March 1977||6 February 1978||18 February 1980||22 December 1982||14 April 1983||£82,100,000|
|Royal Navy – batch 3|
|D95||Manchester||Vickers Shipbuilders Ltd, Barrow-in-Furness.||10 November 1978||19 May 1978||24 November 1980||19 November 1982||16 December 1982||£110,000,000|
|D98||York||Swan Hunter Ltd, Wallsend-on-Tyne.||25 April 1979<||18 January 1980||21 June 1982||25 March 1985||9 August 1985||£118,700,000|
|D96||Gloucester||Vosper Thornycroft Ltd, Woolston.||27 March 1979||29 October 1979||2 November 1982||16 May 1985||11 September 1985||£120,800,000|
|D97||Edinburgh||Cammell Laird & Co, Birkenhead.||25 April 1979||8 September 1980||13 April 1983||25 July 1985||17 December 1985||£130,600,000|
|Argentine Republic Navy– batch 1|
|D1||Hércules||Vickers Shipbuilders Ltd, Barrow-in-Furness.||18 May 1970||16 June 1971||24 October 1972||10 May 1976||12 July 1976|
|D2||Santísima Trinidad||AFNE, Rio Santiago, Argentina.||18 May 1970||11 October 1971||9 November 1974||1 July 1981|
In May 1982, the Parliamentary Under-Secretary of State (Jerry Wiggin) stated that the current replacement cost of a Type 42 destroyer of the Sheffield class was "about £120 million." In July 1984, the Parliamentary Under-Secretary of State (John Lee) stated: "the average cost of the three Type 42 destroyers currently under construction is £117 million at 1983–84 price levels."
Not including major refits and upgradesEdit
|Date||Running cost||What is included||Citation|
|1981–82||£10.0 million||Average annual running cost of Type 42s at average 1981–82 prices and including associated aircraft costs but excluding the costs of major refits.|||
|1985–86||£15 million||The average cost of running and maintaining a type 42 destroyer for one year.|||
|1987–88||£7 million||The average annual operating costs, at financial year 1987–88 prices of a type 42 destroyer. These costs include personnel, fuel, spares, and so on, and administrative support services, but exclude new construction, capital equipment, and refit-repair costs.|||
|2001–02||£13.0 million||Type 42 destroyer, average annual operating costs, based on historic costs over each full financial year. The figures include manpower, maintenance, fuel, stores, and other costs (such as harbour dues), but exclude depreciation and cost of capital.|||
Including refits and upgradesEdit
|Date||Running cost||What is included||Citation|
|2007–08||£31.35 million||"The annual operating cost of the Type 42 Class of Destroyers, covering a total of eight vessels in the 07/08 period, is £250.8M." "This is based on information primarily from Financial Year 07/08 the last year for which this information is available, and includes typical day-to-day costs such as fuel and manpower and general support costs covering maintenance, repair and equipment spares. Costs for equipment spares are also included, although these are based on Financial Year 08/09 information as this is the most recent information available. Costs for weapon system support are not included as they could only be provided at disproportionate cost."|||
|2009–10||£26.7 million||"The average running cost per class... Type 42 is £160.1 million. These figures, based on the expenditure incurred by the Ministry of Defence in 2009–10, include maintenance, safety certification, military upgrades, manpower, inventory, satellite communication, fuel costs, and depreciation.".|||
In May 2000, the Minister of State for the Armed Forces (John Spellar) stated: "The running costs of each of the Royal Navy's Type 42 destroyers for each of the past five years are contained in the following table. This includes repair and maintenance, manpower, fuel, and other costs such as port and harbour dues. Year-on-year variations are largely attributable to refit periods."
|Birmingham||£32.28 million||£16.92 million||£17.38 million||£13.38 million||£10.39 million|
|Newcastle||£32.60 million||£31.60 million||£18.57 million||£13.90 million||£13.73 million|
|Glasgow||£14.70 million||£29.47 million||£26.36 million||£13.61 million||£12.65 million|
|Cardiff||£19.86 million||£41.2 million||£28.86 million||£13.20 million||£17.87 million|
|Exeter||£19.46 million||£15.72 million||£40.83 million||£12.76 million||£14.48 million|
|Southampton||£16.53 million||£20.37 million||£17.91 million||£39.09 million||£18.79 million|
|Nottingham||£18.70 million||£17.24 million||£19.08 million||£13.08 million||£32.74 million|
|Liverpool||£16.92 million||£20.75 million||£14.59 million||£14.79 million||£14.63 million|
|Manchester||£17.99 million||£19.40 million||£14.58 million||£12.22 million||£12.69 million|
|Gloucester||£19.33 million||£19.40 million||£13.89 million||£21.49 million||£15.77 million|
|York||£20.48 million||£19.79 million||£17.50 million||£11.78 million||£21.88 million|
|Edinburgh||£35.27 million||£19.29 million||£22.50 million||£13.00 million||£12.28 million|
In February 1998, the Minister of State for Defence, Dr Reid said: "Type 42 destroyers achieved approximately 84 to 86 per cent average availability for operational service in each of the last five years. This discounts time spent in planned maintenance."
Fate of shipsEdit
|D80||Sheffield||Portsmouth||16 February 1975||Sunk in Falklands War 4 May 1982|
|D86||Birmingham||Portsmouth||3 December 1976||Decommissioned 31 December 1999||Scrapped October 2000|
|D88||Glasgow||Portsmouth||25 May 1977||Decommissioned 1 February 2005||Scrapped December 2008|
|D87||Newcastle||Portsmouth||23 March 1978||Decommissioned 1 February 2005||Scrapped November 2008|
|D118||Coventry||Portsmouth||20 October 1978||Sunk in Falklands War 25 May 1982|
|D108||Cardiff||Portsmouth||24 September 1979||Decommissioned 14 July 2005||Scrapped November 2008|
|D89||Exeter||Portsmouth||18 September 1980||Decommissioned 27 May 2009||Scrapped September 2011|
|D90||Southampton||Portsmouth||31 October 1981||Decommissioned 12 February 2009||Scrapped October 2011|
|D92||Liverpool||Portsmouth||9 July 1982||Decommissioned 30 March 2012||Scrapped October 2014|
|D91||Nottingham||Portsmouth||8 April 1983||Decommissioned 11 February 2010||Scrapped October 2011|
|D95||Manchester||Portsmouth||16 December 1982||Decommissioned 24 February 2011||Scrapped November 2014|
|D98||York||Portsmouth||9 August 1985||Decommissioned 27 September 2012||Scrapped August 2015|
|D96||Gloucester||Portsmouth||11 September 1985||Decommissioned 30 June 2011||Scrapped September 2015|
|D97||Edinburgh||Portsmouth||17 December 1985||Decommissioned 6 June 2013||Scrapped August 2015|
|Navy of the Argentine Republic|
|Hércules||Puerto Belgrano||12 July 1976||Transformed in a multi-purpose transport ship since 2000. As of 2020, reported non-operational.|
|D-2||Santísima Trinidad||Puerto Belgrano||1 July 1981||Decommissioned in 2004.
Intended to become a naval museum, but sank, as a result of negligence, off Puerto Belgrano on 22 January 2013. She was refloated in December 2015 and moved to a drydock to evaluate her restoration as a museum ship. But due to serious damage and lack of funds, she was destined to be scrapped in 2018.
|Undergoing for scrapping since 2018.|
The surviving Argentine Type 42, Hércules, is based at Puerto Belgrano Naval Base, Argentina, and has been converted into an amphibious command ship through the addition of a new aft superstructure and hangar. It was originally fitted with four single Exocet missile launchers, two on either side of the funnel facing forward but these were removed during refit. As of 2020, Hércules was reported to be non-operational. The other Argentine vessel, Santísima Trinidad, capsized and sank alongside her berth at Puerto Belgrano on 22 January 2013, reportedly as a result of poor maintenance and negligence leading to a burst seawater main and catastrophic flooding. Prior to her demise, Santísima Trinidad was extensively cannibalised for spare parts for her more active sister ship. In December 2015, she was refloated and placed in drydock to evaluate the cost of restoration as a museum ship. Finally, due to the very high cost required, it was decided to scrap her in 2016.
The UK ships are all now decommissioned. By 2007 none of the batch 1 vessels remained in commission. Initially, the UK sought to procure replacements first in collaboration with seven other NATO nations under the NFR-90 project and then with France and Italy through the Horizon CNGF programme. However, both these collaborative ventures failed and the UK decided to go it alone with a national project.
The UK Type 42s are succeeded by six Type 45 destroyers. Daring, Dauntless, Diamond, Dragon, Defender and Duncan are all in commission. The Type 42 class suffered from cramped accommodation, a problem for crew safety and comfort, and also when finding space for upgrades. The Type 45s are considerably larger, displacing 7,500 tonnes, compared to the Type 42 displacement of 3,600 tonnes.
- The term used in Navy Estimates and Defence Estimates is "accepted into service". Hansard has used the term acceptance date. Leo Marriott in his various books uses the term "completed", as does Jane's Fighting Ships. These terms all mean the same thing: the date the Navy accepts the vessel from the builder. This date is important because maintenance cycles, etc. are generally calculated from the acceptance date.
- "Unit cost, i.e. excluding the cost of certain items (e.g. aircraft, First Outfits)." – Text from Defences Estimates
"They do not include other costs, such as those for Government Furnished Equipment (GFE)—as they are not held centrally for each ship and could be provided only at disproportionate cost." Bob Ainsworth, Minister of State for the Armed Forces, 16 July 2008.
- These two sources are in agreement about the dates vessels were commissioned, with the following exceptions:
- Sheffield: Marriott 28 February 1975. Hansard 16 February 1975.
- Glasgow: Marriott 25 May 1979. Hansard 24 May 1979.
- Cardiff: Marriott 19 October 1979. Hansard 24 September 1979.
- Nottingham: Marriott 8 April 1983. Hansard 14 April 1983.
- Liverpool: Marriott 9 July 1982. Hansard 1 July 1982.
- Moore, John Jane's Fighting Ships, 1982–83, pub Jane's Publishing Co Ltd, 1982, ISBN 0-7106-0742-3-page 553 said £40.4 million.
Marriott, Leo Modern Combat Ships 3, Type 42, pub Ian Allan, 1985, ISBN 0-7110-1453-1-page 15 said £40.4 million.
Aldrich, Richard James Intelligence, Defence, and Diplomacy: British Policy in the Post-War World. Taylor & Francis, pub 1994, ISBN 0-7146-4140-5 page 119 says: "One example of how delay in procurement programmes can raise costs is the construction of the Type-42 destroyer HMS Cardiff. Vickers Shipbuilders had originally intended to deliver the vessel in 1975 for a total cost of £15 million. Owing to difficulties in recruiting labourer to work on construction the ship was only completed in 1978 and cost double the original price (over £30 million)." On page 129 it gives the source of this cost data as: "Fourth Report from the Committee on Public Accounts, 1976–77 (H.C. 304), April 1977, pp xii–xiii and Q. 92."
The cost quoted in Aldrich is from a source written before the completion of the vessel, and so is less complete than the cost quoted in Jane's and Marriott, which were written after completion of the vessel, and are nearly the same as the Hansard figure.
- Sharpe, Richard, Jane's Fighting Ships 1992–93, pub Janes Information Group, 1992, ISBN 0-7106-0983-3, pp. 696–7
- Heyman, Charles The Armed Forces of the United Kingdom 1999–2000, pub Pen and Sword, 1998, ISBN 978-0-85052-621-9, pp. 40–41
- Royal Navy (11 July 2013). A Global Force 2012/13 (PDF). Newsdesk Media. ISBN 978-1-906940-75-1. Archived from the original (PDF) on 21 September 2018. Complement as of 24 April 2013
- Marriott, Leo: Royal Navy Destroyers since 1945, ISBN 0-7110-1817-0, Ian Allan Ltd, 1989
- A Preston. Sea Combat off the Falklands. Willow Collins. (1982)London, pp. 112–113
- Marriott, Leo Modern Combat Ships 3, Type 42, pub Ian Allan, 1985, ISBN 0-7110-1453-1-page 28.
- Hansard: HC Deb 23 October 1989 vol 158 cc357-8W 357W Archived 4 July 2009 at the Wayback Machine Question to the Secretary of State for Defence regarding warship costs, 23 October 1989. This section is the first part of the table that is continued on Hansard: HC Deb 23 October 1989 vol 158 c360W Archived 4 July 2009 at the Wayback Machine.
- 16 July 2008 : Column 452W Archived 28 July 2018 at the Wayback Machine Questions to Secretary of the State for Defence, 16 July 2008.
Marriott, Leo Modern Combat Ships 3, Type 42, pub Ian Allan, 1985, ISBN 0-7110-1453-1-page 28.
- Hansard: HC Deb 23 October 1989 vol 158 cc357-8W 357W Archived 4 July 2009 at the Wayback Machine Question to the Secretary of State for Defence regarding warship costs, 23 October 1989.
Marriott, Leo Modern Combat Ships 3, Type 42, pub Ian Allan, 1985, ISBN 0-7110-1453-1-page 15.
Moore, John Jane's Fighting Ships, 1982–83, pub Jane's Publishing Co Ltd, 1982, ISBN 0-7106-0742-3-page 553.
- Hansard: HC Deb 23 October 1989 vol 158 cc357-8W 357W Archived 4 July 2009 at the Wayback Machine Question to the Secretary of State for Defence regarding warship costs, 23 October 1989 says 26 November 1976.
Marriott, Leo Modern Combat Ships 3, Type 42, pub Ian Allan, 1985, ISBN 0-7110-1453-1-page 28 says October 1976.
- Hansard: HC Deb 23 October 1989 vol 158 cc357-8W 357W Archived 4 July 2009 at the Wayback Machine Question to the Secretary of State for Defence regarding warship costs, 23 October 1989 says £31.0 million.
Moore, John Jane's Fighting Ships, 1982–83, pub Jane's Publishing Co Ltd, 1982, ISBN 0-7106-0742-3-page 553 says £30.9 million.
- Moore, John Jane's Fighting Ships, 1982–83, pub Jane's Publishing Co Ltd, 1982, ISBN 0-7106-0742-3-page 553.
- Hansard: HC Deb 23 October 1989 vol 158 cc357-8W 357W Archived 4 July 2009 at the Wayback Machine Question to the Secretary of State for Defence regarding warship costs, 23 October 1989 says £40.5 million.
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