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Type 31 frigate

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The winning design submitted by Babcock, which is based on the Iver Huitfeldt-class frigates
Class overview
NameType 31 Frigate
Builders
Operators
Preceded byType 23 frigate
Cost£268 million (2019)[4] per unit (est.)
In service2027[5][6]
Planned
  • 10 (total)[7]
  • 5 (UK)
  • 2 (Indonesia)
  • 3 (Poland)
Building6
Completed0
General characteristics
TypeGeneral purpose Frigate
Displacement
  • 5,700 t (5,600 long tons)
  • Also listed: 7,000 t (6,900 long tons; 7,700 short tons)[8]
Length138.7 m (455 ft 1 in)
Installed power
  • 4 × Rolls Royce/MTU 20V 8000 M71 (8.2 MW) diesel engines[9]
  • 4 × Rolls Royce/MTU 16V 2000 M41B (900 kW) generators
  • or 4 × Caterpillar 3512C (1360 kW) generators
Propulsion
  • CODAD propulsion System
  • MAN Alpha VBS Mk 5 controllable pitch propeller
  • 2 × Shafts[10]
SpeedIn excess of 28 knots (52 km/h; 32 mph)
Endurance9,000 nmi (17,000 km; 10,000 mi)
Complementc. 110 (accommodation for up to 190)[11]
Sensors and
processing systems
  • Thales Nederland TACTICOS combat management system
  • Thales NS110 4D Dual-Axis Multi-Beam AESA Radar
  • Anschütz Warship Integrated Navigation and Bridge System
  • Terma Scanter and Anschütz NSX navigation radars
  • 2 × Mirador Mk2 EOS
  • Viasat Ultrahigh-frequency satellite communications[12]
Electronic warfare
& decoys
Armament
Aircraft carried
Aviation facilitiesHelicopter hangar sized for Merlin and flight deck sized for Boeing CH-47 Chinook
Notes
  • Mission bay under flight deck for 6 TEUs
  • 3–4 boat bays for RHIBs and USVs/UUVs

The Type 31 frigate, also known as the Inspiration class, and formerly known as the Type 31e frigate or General Purpose Frigate (GPF), is a class of five frigates being built for the United Kingdom's Royal Navy, with variants also being built for the Indonesian and Polish navies. The Type 31 is intended to enter service in the 2020s alongside the eight submarine-hunting Type 26 frigate and will replace the five general-purpose Type 23 frigates.[17] The Type 31 is part of the British government's "National Shipbuilding Strategy".[18]

Designed by Babcock International, it is based on the Odense Maritime Technology (OMT) Iver Huitfeldt-class frigate hull and is marketed under the name Arrowhead 140.[19][20] The design has been sold to Indonesia as the two ship Fregat Merah Putih ("Red-White frigate") in September 2021, and to Poland for the three ship Wicher-class frigates in March 2022.[21][22][23]

Development

[edit]

The 2010 Strategic Defence and Security Review (SDSR) authorised the Global Combat Ship (GCS) programme, which would replace the Royal Navy's thirteen Type 23 frigates. Earlier that year, BAE Systems was awarded a four-year, £127 million contract by the Ministry of Defence to design the new class.[24] It was planned that two variants of the class would be built: five general purpose frigates and eight anti-submarine warfare frigates. There was to be little difference between the two variants, except for the Sonar 2087. Initial expectations were that construction would start in 2016 and the ships would gradually replace the Type 23 frigates by the mid-2030s. The 2015 Defence Review decided that only the eight anti-submarine warfare Type 26 frigates would be ordered and five general purpose frigates to an altogether different design would be ordered to give at least 13 frigates in RN service.[25]

General Purpose Frigate

[edit]

The resultant General Purpose Frigate (GPFF) was to be a lighter, flexible and more affordable general purpose frigate class.[26][27] According to the 2015 SDSR, the lower cost of these frigates could lead to the Royal Navy acquiring more than five, therefore increasing its overall numbers of frigates and destroyers.[28] During a defence and security lecture in July 2016, GPFF was referred to as the Type 31 frigate by the First Sea Lord, Admiral Sir Philip Jones,[29] who also stated that Type 31 frigates could permanently operate "East of Suez"—from the Persian Gulf region to the Asia-Pacific.[29] During the same month, BAE Systems revealed two general purpose frigate designs: the "Avenger class", which was based on the "Amazonas-class/River-class Batch 2 offshore patrol vessel", and the "Cutlass class" that was described as a "significantly stretched and enhanced derivation of the Al Shamikh-class corvette design".[30] The Sunday Times stated that Babcock International and BMT had also submitted one design each.[31][32] Jones described the GPFF as "to be a much less high-end ship. It is still a complex warship, and it is still able to protect and defend and to exert influence around the world, but it is deliberately shaped with lessons from wider industry and off-the-shelf technology to make it... more appealing to operate at a slightly lower end of Royal Navy operations."[17] IHS Janes described it as a "credible frigate" that will cover "maritime security, maritime counter-terrorism and counter-piracy operations, escort duties, and naval fire support... [sitting] between the high-end capability delivered by the Type 26 and Type 45, and the constabulary-oriented outputs to be delivered by the five River-class Batch 2 OPVs."[33]

A September 2017 graphic released by the Royal Navy stressed modular adaptability and flexible construction of the design for export opportunities. Core requirements of the Type 31e frigate included a medium calibre gun, point defence systems, hangar and a flight deck for Wildcat or ten tonne helicopter operated by a crew of around 100 with space for 40 more personnel.[34] The British government released a Request for information (RFI) in September 2017, detailing the desired characteristics of the Type 31e. The RFI provided greater details such as a "Medium Calibre Gun" of greater than 57 mm (2.2 in), a point defence anti-air missile system and the optional ability to launch and recover unmanned aerial vehicles.[35]

National Shipbuilding Strategy

[edit]

In October 2017, the Financial Times stated that

...officials inside the Ministry of Defence, the Treasury and Royal Navy have long resented the obligation, set a decade ago, to maintain skills and shipbuilding capacity at BAE's shipyards on the Clyde regardless of naval needs.

It quoted Francis Tusa, a defence analyst, who argued that the competition appeared to be designed to break BAE's hold on naval shipbuilding;

Were they to have bid as BAE Systems, they wouldn't win. That is absolutely obvious. The fact is that the Type 31 is slanted probably to exclude any bid that includes BAE."[36]

However, this was denied by the MoD, which stated that the competition was designed to improve speed of delivery and reduce cost.[36]

In order to maintain national shipbuilding capacity, the 2017 national shipbuilding strategy proposed ordering an initial batch of five Type 31e frigates with an initial in-service date in 2023, with their cost limited to a maximum of £250m each, to be followed by a second batch order of Type 31 for the Royal Navy.[18]

The refresh to the National Shipbuilding Strategy published by the UK Government in March 2022 stated:

Type 31, the pathfinder project of the 2017 strategy, got to contract on schedule and for the headline price demanded, with the capability exceeding many expectations.[37]

Design tenders

[edit]

Throughout 2017, several designs from different companies were suggested as contenders for the Type 31. BAE submitted two designs, "Avenger", essentially an improved Batch 3 River-class OPV,[38] and "Cutlass", a significantly stretched and enhanced derivation of the Al Shamikh-class corvette.[39] BMT submitted a design called "Venator 110",[40] with Steller Systems putting forward project "Spartan",[41] and Babcock offered a design named "Arrowhead 120".[42]

In October 2017, BAE Systems announced that it would withdraw from the Type 31e competition as a main contractor, citing the capacity constraints of its shipyards on the Clyde, which were full with the work on the new River-class patrol vessels and Type 26 frigates. Instead, BAE announced a partnership with Cammell Laird, whereby BAE would provide its expertise in design and systems integration, while Cammell Laird would be the prime contractor and be responsible for the assembly of the ships at its yard at Birkenhead.[43] The planned design was named "Leander", a reference to three previous classes of ship in the Royal Navy.[44]

In November 2017, it was announced that BMT and Babcock signed a co-operation agreement for the Type 31. They did not choose between their respective "Venator 110" or "Arrowhead 120" designs, but instead would explore their designs to determine the best possible option.[45] In late May 2018, Babcock, partnered with BMT, and Thales Group announced the "Arrowhead 140" design, based on the hull of the Danish Iver Huitfeldt-class frigates.[46]

The competition was suspended on 20 July 2018 due to 'insufficient compliant bids' being received; however, The Times claimed this was due to a "funding crisis".[47] The competition was restarted in August 2018.[48]

Competitive design phase selection

[edit]

On 10 December 2018, three groups were selected for the competitive design phase:

Both the BAE Systems and Babcock led entrants had already been put forward when the competition was temporarily suspended. The third bid was submitted by the Atlas Elektronik UK-led team. Both the Babcock and Atlas proposals included Ferguson Marine on the Clyde and Harland & Wolff in Belfast.[49] By August 2019, both of these companies announced that they were in financial difficulties.[50][51]

It was announced on 12 September 2019 that the Arrowhead 140 design had been selected as the base design for the Type 31 frigate.[52] A contract was formally awarded to Babcock on 15 November 2019, for an average production cost of £250 million per ship and an overall programme cost set to be £2 billion with £1.25 billion value to Babcock.[1]

On 20 January 2020, the Public Accounts Committee was informed by the Permanent Secretary for Defence that the first ship will be launched by 2023, but the in-service date will be in 2027.[53] Earlier statements had been for an in-service date would be in 2023.[54] In September 2022, John Howie, chief corporate affairs officer for Babcock International, stated that all five ships would be "delivered" to the Navy by 2028,[55] though other sources[who?] suggested that the actual "in service" date might be somewhat later.[56]

Arrowhead 140

[edit]

The AH140 design submitted by Babcock, BMT, and Thales is a development of the Iver Huitfeldt-class frigates in service with the Royal Danish Navy.

An engineering paper published in 2022 by Babcock International stated:[57]

...Type 31, and the Arrowhead-140 product, are derived from the ‘parent’ Royal Danish Navy (RDN) Iver Huitfeldt Class of area air warfare Frigates; however, it is not a ‘build to print’ of the Iver Huitfeldt design. From the ‘parent’ class basis the entire Type 31 platform has been extensively redesigned to meet Lloyd’s Register Naval Ship Rules versus the parent class Det Norske Veritas (DNV) rules. Type 31 is also now redesigned to meet NATO ANEP-77 Naval Ship Code and the stringent UK naval stability requirements as a key element amongst wider compliance with UK DefStan 02-900 General Naval Standard, amid a significant number of other UK naval standards.

A further engineering paper published in 2024 by Babcock International explains that significant redesign of the 'parent' class was undertaken to create the Type 31 Frigate:[58]

Based on Babcock’s ARROWHEAD-140 product line, and designed against Lloyd’s Register Naval Ship Rules, ANEP-77 and a significant number of UK Defence Standards (DefStans), Type 31 possesses capabilities, levels of survivability and features not found in previous escort classes such as the Type 23 and Type 45, themselves designed against previous generations of standards.

The same paper goes on to explain the impact of these revised UK design standards:[58]

The entire Type 31 platform has been re-designed to meet Lloyd’s Register Naval Ship Rules and the latest NATO / UK naval standards & regulations, which has introduced an increased capability in the redundancy and resilience of systems over legacy RN platforms including the Type 23 (the design of which pre-dates key standards such as ANEP-77) and many other contemporary Frigate designs.

Babcock state that the design the Arrowhead 140 enables the hull to perform any of a wide range of roles specified by the customer such as:[59]

  • General Purpose – default option (Type 31).
  • Anti-air warfare – Leverages the existing anti-air capabilities of the parent design through use of an additional long range radar such as the SMART/L or S1850M enabling wide area air defence and ballistic missile defence (BMD).
  • Anti-submarine warfare – additional acoustic reduction measures such as the rafting of machinery spaces as well as provisions for a towed array sonar to the stern.
  • Mine countermeasure / amphibious warfare / Multi-Mission platform – In 2023 Babcock revealed their Multi-Role Naval Platform (A140 MNP), a variant of the AH140 with mission modularity in mind and likely as a contending design for the Royal Navy's Type 32 frigate program.[60] The design features a stern boat ramp connected to the existing mission bay under the flight deck, a side hydraulic ramp, an enlarged hangar with capacity for up to 2x AugustaWestland Merlin AW101 sized helicopters, directly connected to a full-width mission bay replacing the 32-cell VLS complex amidships capable of supporting up to three 11-metre craft (e.g. unmanned surface vehicles, rigid inflatable boats) or containers.[60] The design is also compatible with SH Defence's CUBE system for the embarkation and movement of container stores on board.[61]

AH140 also features a wide degree of flexibility in the component systems. It is capable of being fitted with a variety of radar masts (fixed or rotating), up to four boat bays for RHIBs or small USVs and the customer's choice of medium and small calibre gun options (up-to 127 mm in position A and up-to 76 mm in position B).[62][63] Additionally, there are several options for vertical launching systems (VLS) available; from a 24-cell CAMM 'mushroom farm' configuration as cost and weight saving option, up to a 32-cell strike length Mark 41 vertical launch system for long range surface-to-air missiles (SAMs) or surface-to-surface missiles (SSMs) that can be positioned amidships.[59] An additional 16-cell Mark 41 complex can be positioned forward of the bridge by removing the gun mount from Position B enabling either a 48-cell loadout or to free up the central sections for other facilities such as a full-width mission bay.[63][60][64] Previous renderings of the Red-White frigate design for Indonesia have also shown an additional 56 cells of an indeterminant type and length added to the rear of the main gun suggesting that even greater level weapon customisation is available in the design.[65]

Another major characteristic of the AH140 is that it has dedicated accommodation for more than 180 personnel but only requires a crew of less than 100, allowing for both lower sustainment costs but also for a large number of mission specific personnel such as flight crew, remote system operators, marines / special forces to be embarked, or refugees in the case of humanitarian operations.[66]

Babcock also markets the 'Arrowyard' for the AH140, a scalable domestic build option that, according to Babcock's marketing "offers a highly capable, cost effective and tailored approach that drives quality and performance and will bring you a competitive edge in international shipbuilding".[67] It consists of a number of options for sovereign assembly/construction ranging from a basic outfitting yard where ship components are delivered by large and assembled alongside, up to a fully vertically integrated yard capable of constructing an entire vessel from basic steel materials within the facility itself.[67] Arrowyard is part of Babcock's business model for the AH140 of indigenous design as a means of building up a secure relationship with export nations and their industrial / societal base.[67][68]

Exports

[edit]
Keel laying of the first Indonesian Red-White frigate on 25 August 2023

On 16 September 2021, Babcock announced that it had signed an agreement with PT PAL Indonesia allowing it to design two AH140 derivatives for the Indonesian Navy.[69] The class are known locally as Fregat Merah Putih ("Red-White Frigate").[2] The first Red White frigate had its steel cut on 9 December 2022.[22]

On 4 March 2022, Babcock announced that it won the frigate competition for the Polish Navy. The Polish Armaments Agency selected Babcock's AH140 from three different platform design proposals provided by the PGZ-Miecznik consortium ("miecznik" is Polish for "swordfish"). In August 2023, the construction of the first in a series of three Project 106 frigates began at PGZ Stocznia Wojenna.[23]

Following suggestions that the Royal Australian Navy (RAN) might adopt a "two-tier" surface combatant mix pairing the tier one Hobart-class destroyers and Hunter-class frigates with a smaller, less capable, but cheaper class for the RAN, Babcock Australasia reportedly offered the Arrowhead 140 to meet this possible requirement.[70] However, the AH140 design was subsequently not selected as a candidate for the project after it was officially announced by the Australian government.[71]

In October 2023, Babcock formally began building its bid for the Royal New Zealand Navy (RNZN) and started looking for New Zealand-based small medium enterprises (SMEs) to develop a domestic supply chain.[72]

Characteristics

[edit]

Royal Navy – Type 31 (Inspiration class)

[edit]

The Inspiration class will have a length of 138.7 m (455 ft 1 in), a beam of 20.36 m (66.8 ft) and a displacement of 7,000 tonnes (6,900 long tons). It will have a crew complement of about 110 sailors (with available accommodation for about 80 additional personnel),[11] a total range of 7500 nmi, and a top speed of 26+ knots.[64][73][58]

The procurement of the equipment fit for the Type 31 differs greatly from traditional practices, with designs decisions being made by the prime contractor [Babcock] or mission systems integrator [Thales] acting as the design authority rather than the Defence Equipment and Support (DE&S) organisation or Royal Navy personnel, in accordance to key characteristics laid down by the Ministry of Defence (MoD) for a general purpose frigate.[74] The published Babcock engineering paper states:[57]

...The various rule sets and standards used worldwide to design ships deliver varying levels of capability into a warship, even amongst NATO navies. The RN’s requirements have been honed by real-world and hard-won naval combat experience in the missile age; driving some of the most exacting standards to which a warship can be designed. The Type 31 Frigate now complies with these requirements and latest standards, materially increasing its performance over many overseas Frigate designs and the legacy 1980s-designed Type 23 General Purpose Frigate that it will replace in RN service."

On 1 October 2020, BAE Systems Bofors announced it was under contract to supply five Bofors 57 mm Mk3 medium calibre guns and ten Bofors 40 mm Mk4 small calibre guns to the Royal Navy for the first five Type 31 frigates.[75] The 57 mm Mk3 will equip the A position whilst two 40 mm Mk4s will be mounted in positions B and Y in a broadside configuration.[74] In November 2022 the MoD placed a contract with BAE Systems Bofors

...for the supply of technical support, gun simulators to be commissioned into a Land Based Integration Facility (LBIF) for T31 Frigate and qualified 3P (programmable) ammunition for the 57 mm Mk3 and 40mm Mk4 naval gun systems that will be supplied with the five Type 31 General Purpose Frigates[76]

In 2019, Forces News reported that the design would have Sea Ceptor (CAMM) missiles, an advanced air and surface surveillance and target indication radar such as the Thales NS110[77] and be able to operate either an AgustaWestland Wildcat HMA2 or an AgustaWestland Merlin HM2.[78] Type 31 will have the first 4D Dual-Axis, Multi-Beam, Active Electronically Scanned Array (AESA) Radar to be fitted to a RN Frigate [Thales NS110].[64]

The vertical launching system for the Type 31 and its associated missile loadout has gone through a number of revisions over the course of its development. Originally, the design would retain, but would however be "fitted-for-but-not-with" its 32-cell strike length Mark 41 Vertical Launching System and in its place was to be a Sea Ceptor 24-cell 'mushroom farm' in a similar configuration as found on the Type 23 frigates.[79][80] This was later revised with a more modular version of the launcher consisting of two 2x3-cell launch modules with a reduction from 24 to 12 missiles possibly as a cost-saving venture.[81] However, on 17 May 2023, the First Sea Lord Ben Key stated that Type 31 frigates will in fact be fitted with the 32-cell Mark 41 Strike-Length complex.[82][83] The exact missile mix for the Type 31 with the Mark-41 has yet to be confirmed but will likely consist of at least 32x Sea Ceptor missiles quad-packed into one of the four 8-cell launch modules in addition to possibly integrating the forthcoming surface launched variant(s) of the Future Cruise/Anti-Ship Weapon(s) being developed jointly by the UK, France, and Italy for surface warfare capability.[82][83] Other sources have previously suggested that the ship might incorporate the canister-launched Naval Strike Missiles which could be migrated over from the retiring Type 23 frigates and be fitted on the Type 31.[84]

In June 2023, the completed bow stem of the lead unit, HMS Venturer, revealed [58] that a bow-mounted sonar will not be part of the initial build of the ship.[85]

On 26 March 2024, it was announced that Sea Gnat fixed decoy launching system would be replaced across the entire Royal Navy's escort fleet with SEA's Ancilia trainable decoy launcher including on the Type 31 following a £135 million contract. A pair of launchers will be mounted to the deck and will each provide twelve ready rounds of Infrared seduction decoys and radio frequency distraction decoys to defeat missile threats and possibly the ability to launch Martlet missiles in the future.[86][87]

On 14 May 2024, First Sea Lord Ben Key announced that the Type 31 frigate would be equipped with land strike capabilities. The three missiles under consideration are the Naval Strike Missile, Tomahawk cruise missile and the Future Cruise/Anti-Ship Weapon.[88]

In June 2024 a technical paper was published by Babcock International detailing how the crewing solution for the Type 31 Frigate was developed for the Royal Navy, to use the smallest number of personnel possible to operate a large surface combatant:[58]

With the challenges of a reduced number of available trained and experienced personnel to crew RN platforms in the immediate future, against a background of contemporary platforms requiring additional personnel in order to function to their full capability, Type 31 had to be designed from the outset to be as efficient to operate as possible in terms of personnel numbers whist still able to deliver sustainable operational capability. This was a specific requirement placed on the Type 31 design by the RN to be delivered as part of the programme.

This paper details the technology and other considerations within the Type 31 Frigate that enables a smaller crew:[58]

The Type 31 Frigate complement represents an optimum solution at a point in time. Defined by the latest high-TRL technology available that can be delivered into a class of warships in build now, and the various naval rules and regulations against which the ship was designed, Type 31 has the smallest effective and sustainable size of Ship’s Company possible for a 7,000 tonne General Purpose Frigate that is capable of global combat operations.

Indonesian Navy – Fregat Merah Putih

[edit]
Class overview
NameRed White Frigate
BuildersPT PAL Indonesia
Operators Indonesian Navy
Building2
Completed0
General characteristics
TypeFrigate
Displacement6,626 t (6,521 long tons) (full)
Length140 m (459 ft 4 in)
Beam19.75 m (64 ft 10 in)
Speed28 knots (52 km/h; 32 mph)
Range9,000 nmi (17,000 km; 10,000 mi)
Endurance21 days
Complement143
NotesSource[89]

On 9 December 2022, Indonesian state-own shipyard PT PAL Indonesia held the first steel cut ceremony for the first Fregat Merah Putih (Red White Frigate) at their shipyard in Surabaya.[22] The first frigate was laid down on 25 August 2023.[21][90] The first steel cut of the second Red and White frigate was made on 5 June 2024.[89][91] The second ship was laid down on 15 November 2024, five months earlier from the planned date of March 2025.[92]

Polish Navy – Wicher class

[edit]
Class overview
NameWicher-class frigate
BuildersPGZ Stocznia Wojenna[93]
Operators Polish Navy
Planned3
Building1
Completed0
General characteristics
TypeFrigate
Displacement7,000 t (6,900 long tons)
Length138.7 m (455 ft 1 in)
Installed power
  • 4 × Rolls Royce/MTU 20V 8000 M71 (8.2 MW) diesel engines[9]
  • 4 × Rolls Royce/MTU 16V 2000 M41B (900 kW) generators
  • or 4 × Caterpillar 3512C (1,360 kW) generators
Propulsion
  • CODAD propulsion system
  • MAN Alpha VBS Mk 5 controllable pitch propeller
  • 2 × Shafts[94]
SpeedIn excess of 28 knots (52 km/h; 32 mph)
Endurance9,000 nmi (17,000 km; 10,000 mi)
Complement80–100 (accommodation for >180)
Sensors and
processing systems		Blue Hunter hull sonar and CAPTAS-2 towed sonar

Thales SM400 Sea Master AESA radar

Thales NS50 4D AESA Radar [95]
Armament
  • 32-cell Mark 41 VLS for CAMM family of anti-air missiles
  • 1 × Leonardo 76mm Super Rapido Strales gun
  • 2 × PIT-Radwar 35mm OSU-35K close-in weapon system
  • 2 × ZM Tarnów 12.7 mm ZSMU A3B remote-controlled weapon station
  • 2 × ZM Tarnów 12.7 mm WKM-Bm machine guns
  • 16 × Kongsberg NSM anti-ship missiles
  • 2 × B515/2V launchers for 324 mm ASW torpedoes[95]

On 16 August 2023, a steel-cutting ceremony took place for the first of the Wicher-class frigates, ORP Wicher. The ceremony was held at PGZ Stocznia Wojenna in Gdynia.[96]

Also on 16 August 2023, it was announced that PGZ and Babcock signed an agreement including an option to build five more units. If exercised, this would result in at total of eight Wicher-class vessels being procured by Poland.

At the MSPO 2024 defense expo, it was announced that the Wicher-class frigates will be fitted with Kongsberg's NSM anti-ship missiles instead of Saab's RBS 15 Mk 3.[97]

Ships of the class

[edit]

The Royal Navy's five ships will be known as the "Inspiration class". In May 2021, the names of the five Type 31 ships were announced by the First Sea Lord; these were selected to represent key themes of the future plans of the Royal Navy and Royal Marines:[98]

As of 2021, all ships were planned to be service by February 2030,[100] though by mid-2024, that plan may have slipped by at least a few months.[101] Italics indicate estimated date.

Name Pennant No. Builder Ordered Laid down Launched Commissioned Status
 Royal Navy
Venturer[102] Babcock International, Rosyth 15 November 2019 26 April 2022[103] End-2024[104][105] Projected late 2026/early 2027[101][106] Under construction; first steel cut 23 September 2021[107][108]
Active 16 September 2023[109] Under construction; first steel cut 24 January 2023[110]
Formidable Under construction; first steel cut 9 October 2024[111]
Bulldog Announced
Campbeltown Announced
 Indonesian Navy
TBC PAL Indonesia, Surabaya

Babcock International, Rosyth

16 September 2021 25 August 2023[21] Under construction; first steel cut 9 December 2022[22]
TBC 15 November 2024[92] Under construction; first steel cut 5 June 2024[112]
 Polish Navy
Wicher (Gale) PGZ Stocznia Wojenna, Gdynia

Babcock International, Rosyth

4 March 2022 31 January 2024[113] Under construction; first steel cut on 16 August 2023[114][115]
Burza (Storm) Announced
Huragan (Hurricane) Announced

See also

[edit]

References

[edit]
  1. ^ a b Vavasseur, Xavier (15 November 2019). "UK MoD Formally Awards Type 31 Frigate Contract To Babcock". Naval News. Retrieved 16 November 2019.
  2. ^ a b "Indo Defence 2022: Indonesia prepares to cut steel on first 'Red-White' frigate". janes.com. 7 November 2022. Retrieved 19 December 2022.
  3. ^ Donnelly, B. (2022). "Scottish shipyard wins Polish Navy frigate contracts". Retrieved 27 February 2023.
  4. ^ "Royal Navy frigate programme update". www.navylookout.com. 20 July 2021.
  5. ^ Allison, George (7 February 2020). "Type 31 Frigate in-service date slips by four years".
  6. ^ "Only seven years to wait until the Royal Navy gets a new frigate | Save the Royal Navy". www.savetheroyalnavy.org. 8 February 2020.
  7. ^ "Ambitious future for Naval Shipbuilding in the UK". gov.uk. 7 September 2017. Retrieved 7 September 2017.
  8. ^ Johnson, J. (2022). Type 31 Frigate: Complex Warship Design for a Dynamic Operational Environment. International Naval Engineering Conference and Exhibition. Retrieved 26 August 2023.
  9. ^ a b "Rolls-Royce Seals Propulsion Systems Contract For Royal Navy's Type 31 Frigates". 29 May 2020. Retrieved 30 May 2020.
  10. ^ "MAN to supply propulsion for Royal Navy frigates". rivieramm.com. 27 April 2020. Retrieved 30 May 2020.
  11. ^ a b "The development of a lean crewing solution for the Royal Navy's Type 31 frigate". Navy Lookout. 23 September 2024. Retrieved 23 September 2024.
  12. ^ Chuter, Andrew (3 November 2020). "Viasat to supply Britain's future frigate with satellite communications tech". defensenews.com. Retrieved 4 November 2020.
  13. ^ "DE&S awards contract for new Royal Navy electronic warfare capabilities". Defence Equipment and Support. 2022.
  14. ^ "Royal Navy's Type 31 frigates to be fitted with Mk41 vertical launch system". Navy Lookout. 17 May 2023.
  15. ^ Childs, Nick (7 October 2019). "UK's naval balancing act: getting the Type-31 frigate right". iiss.org/. IISS. Retrieved 1 October 2020. as well as up to 24 MBDA Sea Ceptor local-area air-defence missiles
  16. ^ Britain to arm frigates with land attack missiles
  17. ^ a b "Oral evidence: Naval Procurement: Type 26 and Type 45 HC 221". UK House of Commons Defence Select Committee. 21 July 2016. Retrieved 21 July 2016.
  18. ^ a b "National Shipbuilding Strategy: the future of naval shipbuilding in the UK" (PDF). gov.uk. British Ministry of Defence. 6 September 2017. Retrieved 26 August 2019. We have set a maximum £250 million per ship price for the Type 31e
  19. ^ Bahtić, F. (3 January 2022), One more country is modernizing its naval fleet with Type 31 frigates, retrieved 12 March 2023
  20. ^ Tovey, Alan (30 June 2021). "Babcock in talks to sell 'budget frigates' to five countries". The Telegraph.
  21. ^ a b c Malufti, Fauzan (26 August 2023). "Indonesia Lays Keel Of First 'Red White' Frigate". navalnews.com. Retrieved 26 August 2023.
  22. ^ a b c d Sawiyya, Rangga Baswara (10 December 2022). "Pemotongan baja pertama Kapal Fregat Merah Putih telah dilakukan oleh PT PAL" [The first steel cutting of the Red and White Frigate Ship was carried out by PT PAL]. Airspace Review (in Indonesian). Retrieved 19 December 2022.
  23. ^ a b Allison, George (4 March 2022). "British company Babcock wins Polish frigate competition". UK Defence Journal. Retrieved 4 March 2022.
  24. ^ "BAE wins £127m contract to design Navy warship". BBC. 25 March 2010. Retrieved 26 July 2011.
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Bibliography

[edit]
  • Osborne, Richard (August 2021). Osborne, Richard (ed.). "Type 31 Frigates". Warships: Marine News Supplement. 75 (8): 434–440. ISSN 0966-6958.
  • Johnson, J. Howard, M (November 2022). "Type 31 Frigate: Complex Warship Design for a Dynamic Operational Environment" Proceedings of International Naval Engineering Conference (INEC) 2022 doi 10.24868/10665
  • Johnson, J. Howard, M (June 2024). "From UMS to Full Autonomy; Experience from a Complex Warship Programme" Proceedings of RINA Warships 2024: Future Surface Combatants Conference [1]
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