Type 45 destroyer

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HMS Daring in 2010
HMS Daring departing Portsmouth Naval Base, 1 March 2010.
Class overview
Name: Type 45 destroyer
Builders: BAE Systems Maritime – Naval Ships
Operators:  Royal Navy
Preceded by: Type 42
Cost: Over £1,050M per ship inc R&D
Planned: 6[N 1]
Completed: 6
Active: 6
General characteristics
Type: Guided missile destroyer
Displacement: 8,000[3] to 8,500 t (8,400 long tons; 9,400 short tons)[4][5][6]
Length: 152.4 m (500 ft 0 in)
Beam: 21.2 m (69 ft 7 in)
Draught: 7.4 m (24 ft 3 in)
Installed power:
Propulsion:
Speed: In excess of 30 kn (56 km/h; 35 mph)[8]
Range: In excess of 7,000 nautical miles (13,000 km) at 18 kn (33 km/h)[8]
Complement: 191[9] (accommodation for up to 235)
Sensors and
processing systems:
Electronic warfare
& decoys:
Armament:
Aircraft carried:
  • 1–2 × Lynx HMA8, armed with:
    • 4 × Sea Skua anti ship missiles, or
    • 2 × anti submarine torpedoes
  • or
  • 1 × Merlin HM1,[15] armed with:
    • 4 × anti-submarine torpedoes
Aviation facilities:
  • Large flight deck
  • Enclosed hangar

The Type 45 destroyer, also known as the D or Daring class, is an advanced class of guided missile destroyers built for the United Kingdom's Royal Navy. The class is primarily designed for anti-aircraft and anti-missile warfare and is built around the PAAMS (Sea Viper) air-defence system utilizing the SAMPSON AESA and the S1850M long-range radars. The first three destroyers were assembled by BAE Systems Surface Fleet Solutions from partially prefabricated "blocks" built at different shipyards, the remaining three were built by BAE Systems Maritime – Naval Ships. The first ship in the Daring class, HMS Daring, was launched on 1 February 2006 and commissioned on 23 July 2009.[16]

The Type 45 destroyers were built to replace the Type 42 destroyers that had served during the Falklands War, with the last Type 42 being decommissioned in 2013. The National Audit Office reported that, during an "intensive attack", a single Type 45 could simultaneously track, engage and destroy more targets than five Type 42 destroyers operating together.[17] After the launch of Daring on 1 February 2006 Admiral Sir Alan West, a former First Sea Lord, stated that it would be the Royal Navy's most capable destroyer ever, as well as the world's best air-defence ship.[18] The reduction in the number to be procured from twelve, then to eight and eventually down to six (in 2008) was controversial.[19][20]

Development

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The UK had sought to procure a new class air-defence destroyers in collaboration with seven other NATO nations under the NFR-90 project, the project later collapsed due to varying requirements of the different countries involved. The UK then joined France and later Italy in the Horizon-class frigate programme; however, differing national requirements, workshare arguments and delays led to the UK withdrawing on 26 April 1999 and starting its own national project.[21] On 23 November 1999 Marconi Electronic Systems or MES was confirmed as prime contractor for the Type 45 project.[22] Seven days later MES and British Aerospace merged to form BAE Systems, making the latter the prime contractor.

The Type 45 project has been criticised for rising costs and delays, with the ships costing £6.46 billion, an increase of £1.5 billion (29%) on the original budget.[23] The first ship entered service in 2010,[24] rather than 2007 as initially planned. In 2007, the Defence Select Committee expressed its disappointment that the MoD and BAE had failed to control rising costs.[25][26]

Construction

The Type 45 destroyers take advantage of some Horizon development work and utilise the Sea Viper air-defence system and the SAMPSON radar. The ships are built by BAE Systems Maritime – Naval Ships, originally created as BVT Surface Fleet by the merger of the surface shipbuilding arms of BAE Systems and VT Group. These two companies previously built the ships in collaboration. BAE's two Glasgow shipyards and single Portsmouth shipyard are responsible for different "blocks". BAE's Govan yard is responsible for Block A (stern to edge of helicopter hangar). The Scotstoun yard builds Blocks B/C (a 2600 tonne section which contains the Rolls-Royce WR-21 gas turbines, starts with the helicopter hangar to the bridge section) and Block D (bridge section itself). BAE's Portsmouth shipyard is responsible for Blocks E/F (bridge to the bow) and the funnels and masts. For ships 2 to 6 blocks A-D are assembled in the Ships Block and Outfit Hall of the Govan shipyard, and taken fully outfitted to the Scotstoun berth. The masts and funnels are also fitted before launch.

Construction of blocks of Dauntless at Portsmouth.

For the first-of-class, Block A was assembled at Govan and moved to Scotstoun, where it was mated to Block B/C, which was already fitted with the WR-21 turbines and machinery. Block D, also assembled at Scotstoun, was fitted to these three blocks. The bow sections (E/F) were mated at Portsmouth and taken by barge to Scotstoun. These were the final blocks to be attached. At this point the hull was launched into the Clyde and towed to the Scotstoun Dry Dock where the masts and funnels were fitted (the masts are partially outfitted with equipment, for example the mast for the S1850M radar is sent from Portsmouth to Thales Nederland to be fitted with radar equipment). Once this is complete, the remaining equipment is fitted: radar arrays, bow-mounted sonar, propellers, missile equipment and 4.5-inch gun.

This modular construction arrangement was agreed in February 2002. However, when the original contract for three ships was signed in July 2000, BAE Systems Marine was to build the first and third ships, and Vosper Thornycroft (now VT) was to build the second.

By the end of 2010, all six Type 45 destroyers had been launched; with the first two in commission and the remainder fitting out. In 2012, with all destroyers structurally complete and production lines closed. Duncan, the last of the Type 45 destroyers, was commissioned at Portsmouth Naval Base on 26 September 2013, and entered service in 2014 after trials and training.[27]

The Daring class are the largest escorts ever built for the Royal Navy in terms of displacement.[N 3]

In 2009, delivery of the ships' Aster missiles was delayed due to a failure during testing.[28] A subsequent investigation revealed a manufacturing fault with a single batch of missiles and delivery of the Aster 30 is back on schedule.[29]

Characteristics

HMS Defender moored at Greenwich in London

The Type 45 destroyers are 152.4 m (500 ft) in length, with a beam of 21.2 m (70 ft) and a draught of 7.4 m. (24.3 ft) This makes them significantly larger than the Type 42 they replace, displacing approximately 8,500 tonnes[3][4] compared to 5,200 tonnes of the Type 42. The Type 45 destroyers are the first British warships built to meet the Lloyd's Register's Naval Ship Rules for hull structure requiring design approval by Lloyd's Register for the principal structural arrangements of the vessel.[30] BAE Systems is the Design Authority for the Type 45, a role traditionally held by the UK Ministry of Defence.[31] The design of the Type 45 brings new levels of radar signature reduction to the Royal Navy. Deck equipment and life rafts are concealed behind the ship's superstructure panels, producing a very "clean" superstructure somewhat similar to the French La Fayette-class frigates. The mast is also sparingly equipped externally. Speculation by the press suggests that this design gives the ship the radar cross-section of a small fishing boat.[32]

The Daring class is notable for being the first Royal Navy vessels to include gender-neutral living spaces to accommodate male and female crew members; communal shower and heads facilities have given way to individual cubicles, and six-person berths for junior ratings are far more flexible in accommodating a mixture of male and female sailors.[33] Men and women will continue to sleep in separate spaces, in common with most other navies.

Propulsion

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The Type 45 is fitted with an innovative integrated electric propulsion (IEP) system. Historically, electric-drive ships (like USS Langley) have supplied power to their electric motors using DC, and ship's electrical load, where necessary at all, was either separately supplied or was supplied as DC with a large range of acceptable voltage. Integrated electric propulsion seeks to supply all propulsion and ship's electrical load via AC at a high quality of voltage and frequency.[N 4] This is achieved by computerised control, high quality transformation and electrical filtering. Two Rolls-Royce WR-21 gas turbine alternators and two Wärtsilä 12V200 diesel generators provide electrical power at 4,160 volts to a high voltage system. The high voltage supply is then used to provide power to two GE Power Conversion advanced induction motors with outputs of 20 MW (27,000 hp) each. Ship's services, including hotel load and weapons system power supplies, are supplied via transformers from the high voltage supply at 440 V and 115 V.[34] The benefits of integrated electric propulsion are cited as:

  • The ability to place the electric motors closer to the propeller, thus shortening the shaftline, obviating the need for a gearbox or controllable pitch propellers, and reducing exposure to action damage.[34]
  • The opportunity to place prime movers (diesel generators and gas turbine alternators) at convenient locations away from the shaftline, thus reducing the space lost to funnels, while at the same time improving access for maintenance and engine changes.[35]
  • The freedom to run all propulsion and ship services from a single prime mover for much of the ship's life, thus dramatically reducing engine running hours and emissions.[34]

Key to the efficient use of a single prime mover is the choice of a gas turbine that provides efficiency over a large load range; the WR-21 gas turbine incorporates compressor intercooling and exhaust heat recovery, making it significantly more efficient than previous marine gas turbines, especially at low and medium load.

The combination of greater efficiency and high fuel capacity give an endurance of 7,000 nautical miles (13,000 km) at 18 knots (33 km/h).[34] High power density and the hydrodynamic efficiency of a longer hull form allow high speeds to be sustained. It has been reported that Daring reached her design speed of 29 knots (54 km/h) in 70 seconds and achieved a speed of 31.5 knots (58 km/h) in 120 seconds during sea-trials in August 2007.[36]

Advanced air-defence

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HMS Daring SAMPSON multi-function AESA radar

The Type 45 destroyers are primarily designed for anti-air warfare with the capability to defend against sophisticated targets such as fighter aircraft, drones as well as highly maneuverable sea skimming anti-ship missiles travelling at supersonic speeds.[37] The Royal Navy describes the destroyers' mission as being "to shield the Fleet from air attack".[38]

The Type 45 destroyer is equipped with the sophisticated Sea Viper (PAAMS) air-defence system utilizing the SAMPSON active electronically scanned array multi-function radar and the S1850M long-range radar. The PAAMS system is able to track over 2,000 targets and simultaneously control and coordinate multiple missiles in the air at once, allowing a large number of tracks to be intercepted and destroyed at any given time. This makes the PAAMS system particularly difficult to swamp during a saturation attack, even against supersonic targets.[39] The US Naval War College has suggested that the SAMPSON radar is capable of tracking 1,000 objects the size of a cricket ball travelling at three times the speed of sound (Mach 3), emphasising the system's capabilities against high performance stealth targets.[37]

A core component of the PAAMS air-defence system is the Aster missile, composing of the Aster 15 and Aster 30. MBDA describe Aster as a "hit-to-kill" anti-missile missile capable of intercepting all types of high performance air threats at a maximum range of 120 km.[40] The Aster missile is autonomously guided and equipped with an active RF seeker enabling it to cope with "saturated attacks" thanks to a "multiple engagement capability" and a "high rate of fire".[40] Presently the Daring-class destroyers are equipped with a 48-cell A50 Sylver Vertical Launching System allowing for a mix of up-to 48 Aster 15 and 30 missiles.

In addition to its anti-air warfare role, PAAMS offers additional ballistic missile defence capabilities. In March 2013 the United States Naval Institute reported that the Royal Navy along with the United States Missile Defense Agency will explore the potential of the Daring class providing ballistic missile defence in Europe along with United States Navy Aegis equipped destroyers.[41] In May 2014, it was reported by IHS Jane's that the United Kingdom is committing more funds to explore the capabilities of the SAMPSON multi-function radar and the Type 45 destroyer in a ballistic missile defence role. This followed a successful live firing event hundreds of miles north of Kwajalein Atoll in the Western Pacific Ocean, where Daring demonstrated the ability to "detect at the earliest opportunity" and track "through to intercept" two medium-range ballistic missiles. BAE systems reportedly told IHS Jane's that the SAMPSON multi-function radar "exceeded expectations in all respects". An "Experiment Concurrency and Cueing (TECC)" event for the Type 45 is planned for late 2015.[42]

Because of the marked increase in capabilities delivered by the Type 45 destroyers in relation to their predecessors, the exceptionally high price per ship, and the large amount of public attention they have attracted, defence analysts and correspondents commonly refer to the Daring class as being the "most advanced" or "most powerful" air-defence destroyers in the world.[43][44] Likewise, the ships' builders BAE Systems claim; "Able to detect and track hundreds of targets simultaneously, the Type 45 Destroyer is recognised as the most advanced anti-air warfare vessel in the world."[45] Nick Brown the editor-in-chief of Jane’s International Defence Review was quoted by The Huffington Post (a US online news aggregator and blog) saying, "It’s [Type 45 destroyer] certainly one of the most advanced air defence ships in the world... The US Aegis system is similar, but Sea Viper is more advanced."[46]

Weapons, countermeasures, capabilities and sensors

File:SAMPSON-rotation-composite-3.jpg
The SAMPSON AESA multi-function air tracking radar makes a full 360° rotation every 2 seconds.
The S1850M long-range air surveillance radar on HMS Daring. A 20mm Phalanx CIWS gun mount can be seen in the foreground.
HMS Diamond firing her Aster missiles for the first time.
The BAE 4.5 inch Mark 8 naval gun on Daring.
Anti-air warfare

The Sea Viper air-defence system:

A 48-cell A50 Sylver Vertical Launching System for a mix of up-to 48:

  • Aster 15 missiles (range 1.7–30 km).
  • Aster 30 Block 0 missiles (range 3–120 km).

The Type 45 does not have a formal theatre ballistic missile defence (TBMD) capability but its potential for such a role is being assessed.[47] Land-based Aster 30 Block 1 missiles have intercepted short-range ballistic missiles[48] and trials of a land-based SAMPSON modified for BMD were planned for early 2012.[49] It is said that the first ship, Daring, is engaged in ballistic defence trials with the US Missile Defence Agency (MDA) in as part of a major research and development programme.[50]

Guns
Aviation

The flight deck of the Type 45 is large enough to accommodate aircraft up to the size of a Chinook helicopter.[56] It has hangar space for either one Merlin HM1 or two Lynx helicopters.[56] Both types have a dipping sonar, sonobuoys and radar; the Merlin carries four anti-submarine Sting Ray torpedoes whilst the smaller Lynx HMA8 carries either two Sting Ray or four Sea Skua anti-ship missiles. From 2015 the Lynx will be replaced in RN service by the AW159 Wildcat whose weapons will include the Lightweight Multirole Missile and FASGW(H) missile.[57]

Anti-ship, submarine and land-attack
  • It was revealed through a FOIA request in August 2013 that four of the six Type 45 destroyers would receive Harpoon launchers recycled from the last four decommissioned Type 22 frigates.[58] On 2 March 2015, Duncan set sail on her maiden deployment equipped with Harpoon anti-ship missiles.[59] On 23 March 2015, the crew of Diamond were reunited with their ship following a refit, which included the installation of Harpoon.[60] HMS Daring is currently undergoing maintenance to receive Harpoon missiles.[61]
  • The Type 45 has a bow-mounted medium-frequency Ultra/EDO MFS-7000 sonar but its main anti-submarine weapon is its helicopter(s). As of August 2013 there are no plans to fit anti-submarine torpedo tubes.[58]
  • The 4.5" Mark 8 Mod 1 naval gun has an anti-ship and naval gunfire support (NGS) role.
Countermeasures
Communications and other systems
  • Fully Integrated Communications System (FICS45) - a combined external and internal communications system supplied by Thales and Selex ES Ltd.[63]
  • In 2012, the UAT Mod2.0 digital Radar Electronic Surveillance system was fitted to Daring and Diamond as part of a £40m contract with Thales UK that will see UAT Mod2.1 fitted to the other Type 45's.[12]
  • METOC Meteorology and Oceanography: The Metoc system by BAE Systems comprises the Upper Air Sounding System using launchable radiosondes by Eurodefence Systems Ltd and Graw Radiosondes (Germany) joint venture, as well as a comprehensive weather satellite receiving system and a bathymetrics system. These sensors provide each vessel with a full environmental awareness for tasks such as radar propagation, ballistics and general self-supporting meteorological and oceanographic data production.
Additional capabilities
  • Type 45 has sufficient space to embark 60 Royal Marines and their equipment.[64]
  • The type 45 destroyers are designed with the configuration and capacity to be tasked in a flagship role.[65]
Provision for but not fitted with

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Ships in the class

HMS Duncan, the last ship of the class, departing for sea trials in 2012.

Six ships have been ordered, and transfer of custody of the first happened on 10 December 2008.[68] The MOD's initial planning assumption was to procure twelve ships (essentially a like-for-like replacement of a similar number of Type 42s), with the size of the second batch to be determined between 2005 and 2010.[1] However this was reduced to eight ships in the 2003 defence white paper entitled Delivering Security in a Changing World: Future Capabilities. It was reported in December 2006 that the last two could be cut.[69] In July 2007, Ministry of Defence officials stated that they "still planned to build eight Type 45 destroyers" and that "the extra two ships were still included in planning assumptions".[70] This plan was officially abandoned on 19 June 2008 when the Minister for the Armed Forces, Bob Ainsworth, announced in Parliament that options for the seventh and eighth destroyers would not be taken up.[2][71] The continual scaling back of the project, first from twelve to eight, and subsequently to six ships, has been criticised for leaving the Royal Navy with insufficient ships to meet its requirements.[19][20]

On 9 March 2007, The Independent reported that Saudi Arabia was considering buying "two or three" Type 45s.[72] On 7 September 2007 it was reported that Saudi Arabian officials had been invited to observe Daring's sea trials.[73]

The entire class is based at HMNB Portsmouth.[74][75][76][77]

Name Pennant number Builder First steel cut[N 5] Launched Commissioned Status Badge
Daring D32 BAE Systems Surface Ships 28 March 2003 1 February 2006 23 July 2009[78] In active service Daring Crest.jpg
Dauntless D33 BAE Systems Surface Ships 26 August 2004 23 January 2007 3 June 2010[79] In active service 100px
Diamond D34 BAE Systems Surface Ships 25 February 2005 27 November 2007 6 May 2011[80] In active service Diamond Crest.JPG
Dragon D35 BAE Systems Surface Ships 19 December 2005 17 November 2008 20 April 2012[81] In refit 100px
Defender D36 BAE Systems Surface Ships 31 July 2006 21 October 2009 21 March 2013[82] In active service Crest of HMS Defender.jpg
Duncan D37 BAE Systems Surface Ships 26 January 2007 11 October 2010 26 September 2013[83] In active service HMS Duncan crest.jpg

See also

Footnotes

  1. Six hulls were originally ordered, with a planning assumption that a further six would be ordered between 2005 and 2010.[1] This planning assumption was later reduced to a further two. In the 2008 defence budget, the Global Combat Ship programme (known then as the FSC) was brought forward at the expense of ships 7 and 8, resulting in the final order being left at six, with options for further ships not being taken up.[2]
  2. The Harpoon missile is to be fitted to four of the six ships. HMS Duncan is to be the first.[14]
  3. Largest in terms of displacement; however, the 6,200 ton County-class destroyers were some 6 metres longer, and the 6,300 ton Type 82 destroyer was 2 metres longer.
  4. High quality indicates that the frequency and voltage are stable, with an absence of spikes, even under changes in power demand.
  5. The Type 45 is constructed in modules, so the keel is not "laid down" as in the past. The ceremonial start of the ships' construction is "cutting the first sheet" of steel.

References

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  8. 8.0 8.1 Type 45 Facts by Royal Navy
  9. Lua error in package.lua at line 80: module 'strict' not found. Complement as of 24 April 2013
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  14. Royal Navy - HMS Duncan, royalnavy.mod.uk
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  31. P J Gates, Royal Institution of Naval Architects, 2005, p35.
  32. HMS Daring eases through first sea trials
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  63. Type 45 FICS Fully Integrated Communications System[dead link]
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  65. House of Commons Hansard Written Answers - Frigates 17 March 2011
  66. Early in the design phase it was estimated that 16 strike-length tubes could be fitted and this number has been widely circulated, but as of 2010 the RN website said 12
  67. Naval War College Review, Summer 2013, Vol. 66, No. 3
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  79. The Shields Gazette HMS Dauntless set for Tyne visit
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External links