Shipbucket

A Corvus that isn't the size of my truck!!

Great looking updates.

Great to see the drawings back!

EXCELLENT work Mr. Hood Sir

Jolly Good Show old bean

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https://discord.gg/5PHq8Dk
My artwork is posted here: https://www.deviantart.com/adenandy/gallery/all

Type 80 Air Defence Frigate

During the 1950s the Admiralty planned guided-missile frigates with a SAM system. The American RIM-24 Tartar was the weapon of choice and historically they attempted to replace the twin 4.5in of the Type 12 for a Tartar mount and adding a Wessex aft.

In this AU the Type 80 is a hybrid design, falling midway between the Rothesays and the Leanders. The Type 12 hull is lengthened and larger a flush deck design with a raised forecastle to keep the missile launcher as dry as possible. The powerplant is a COSAG layout developed from that fitted to the Type 81 Tribals with two Y.102 machinery plants (two boilers supplying two 15,000hp Metrovick geared turbines and two 7,500hp A.E.I G6 gas turbines) for a top speed of 27.5 knots (17 knots just on turbines). Generator capacity includes two 750 kW turbo-generators and two 450 kW diesel generators.

The weapon system was British-developed rather than Tartar to save Dollar expenditure. Work on Orange Nell began in 1953. The missile was designed to intercept supersonic missiles. It had a max range of 5.7 miles and a minimum range of 1.1 miles. It could reach Mach 1.2 speed and had a 'warmed-up' reaction time of 10 seconds from detection to launch. The missile had four booster rockets. It was guided by an S-band volume scanning TIR and an X- or Q-band illuminator. It could be looked on before launch or acquire after launch. The missile had a 100lb HE-frag or continuous rod warhead. The twin-rail launcher was fed by a magazine consisting of two concentric rings totalling 40 missiles. The likely miss distance of 20ft would damage a missile airframe but the warhead might survive. In this AU it escapes cancellation in 1957 to be fitted to four Type 80 frigates. Problems with the development and increased US defence aid funding saw the last two ships completed with RIM-24 Tatar but magazine capacity fell to 16 missiles. The bridge was also extensively modernised using experience from the Leander class then under construction.


HMS Archer, Type 80, 1963


HMS Arrow, Type 80, 1965

Four ships commissioned:
HMS Archer June 1963
HMS Slingshot October 1963
HMS Arrow August 1965
HMS Javelin November 1965

Dimensions: 386ft 6in (oa) length; 43ft beam; 13ft draught (hull).
Machinery: two boilers supplying two 15,000hp Metrovick geared turbines and two 7,500hp A.E.I G6 gas turbines
Speed: 27.5kits (deep and clean), 17kts (steam turbines alone)
Displacement: 2,550 tons standard
Armament:
1x2 Orange Nell SAM launcher (40x missiles), fire-control by one Q-band illuminator [second pair have RIM-24 Tartar (16x missiles), controlled by 2 SPG-51]
1x4 GWS-22 Seacat (24x missiles), fire-control by one MRS-3
2x1 40mm Bofors Mk.VIII
1x3 Mortar Mk.10 Limbo (30x depth-bombs)
1x Westland Wasp MATCH helicopter
Radars: one Type 965, one Type 293Q, one Type 993Q and one Type 974.
Sonar: Type 170 and Type 162M
ESM: UA-8, UA-9, UA-10, two Type 667 Cooky jammers



HMS Arrow, 1979

The two Orange Nell armed Type 80 frigates were retired from their primary duties quite early on due to the limitations of the SAM system. HMS Arrow became the trials ship for the Confessor SAM system, to enter service as the Sea Wolf and the successor to Orange Nell. A 12-cell VLS was fitted forward and all other armament removed. A prototype Type 996 radar was also fitted, along with a dedicated IFF antenna. She served on missile development from 1976 to 1992 when she was finally decommissioned. Other weapons tested aboard included Shorts Seastreak and development work on the Type 911 and Type 912 trackers.


HMS Slingshot, 1977

The other Type 80 frigate with the Orange Nell system was converted to a patrol frigate at the height of the 'Cod Wars'. The missile system and Limbo was replaced by a 375mm Bofors A/S mortar mounted forward. Her already upgraded SeaCat 2 systems (installed in the late 1960s) were retained and another MRS-3 fitted forward. Two triple lightweight torpedo tube mounts were also fitted and the old 40mm Bofors (removed in 1968) were replaced by 20mm cannon. HMS Slingshot served in this guise from 1976 to 1983.

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Hood's Worklist
English Electric Canberra FD
Interwar RN Capital Ships
Super-Darings
Never-Were British Aircraft

great additions

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Shipbucket mainsite, aka "The Archive"
New AU project "Aravala"

Nice work, and glad to see this again.

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Would you please not eat my gun...

Great work.
For some reason I prefer the looks of the Type-80 in the 1963 version.

Type 21 Cheiftan Class General Purpose Frigate


HMS Crescent, 1982


HMS Comet, 1988


HMS Crescent, 1993

The historical Type 21 Class turned out slightly less than hoped for and although useful ships they never really had the growth or strength for major additions.
In my AU the politicians are fended off slightly and Vickers agrees to build a frigate based on their export types but to the RN wishes. The emphasis is still on a cheap patrol frigate but with a powerful ASW armament too. My drawing is based on the slightly later Niteroi Class but slightly smaller and with different superstructure and masts. In this AU the Type 21 forms the basis of the Brazilian class as a useful export spin-off and gives a more capable ship.

HMS Chieftain F169 May 1974
HMS Crusader F170 July 1975
HMS Crescent F171 June 1977
HMS Comet F172 September 1975
HMS Cavendish F173 July 1976
HMS Cavalier F174 July 1977
HMS Concord F184 October 1977
HMS Consort F185 April 1978

Dimensions
Length: 415.5ft
Beam: 42ft
Draught: 15ft

Displacement
3,250 tons standard

Powerplant
Two 25,000shp RR Olympus TM3C gas turbines and four 3,500hp Paxman Ventura diesels
32kts on both, 17kts on diesels

Armament
1x2 3in L/70 Mk.2, fire-control by one Type 912
2x1 20mm Oerlikon
4x Woomba SSM (ability to also carry boxed Ikara, improvised Ikara guidance via Type 912)
1x4 Sea Cat II SAM (36 missiles), fire-control by two Type 912
1x2 Bofors 375mm A/S mortar, the need for a short-range A/S weapon to replace the Limbo was recognised in real life and the Bofors was studied alongside Terne but the decision was made to stick to the ship-launched torpedo and helicopter for ASW. In this AU the Bofors is acquired for the this class. Some Leanders also received in it refit during the late 70s.
2x3 12.75in lightweight A/S torpedo tubes (Mk.44/Mk/46 torpedoes)
1x Westland Wasp or Westland Lynx helicopter

Radars & Sonars
One AWS-2 air search, one Type 992Q TIR, one Type 1006 navigation, two Type 912 FCR, one Type 184M sonar and one Type 162M bottom search sonar, UA-series ESM, two Type 670 'Heather' jammers, one Type 669 'Bexley' missile-guidance jammer, CAAIS combat control system
The AWS-2 is fitted to provide a cheap air-search capability rather than fitting the aging Type 965.

Following the Falklands War the Type 21 frigates received a single Phalanx CIWS aft and newer 20mm GAM-BOI mounts. By the early 1990s most had also received the Type 996 radar and GWS-60 Harpoon missiles instead of the heavier Woomba SSMs. During the early 1990s four of the class also received a Seastreak CIWS missile system aft, replacing the Phalanx.

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Hood's Worklist
English Electric Canberra FD
Interwar RN Capital Ships
Super-Darings
Never-Were British Aircraft

Yeah, I agree that this Type 21 woulls be a more capable ship from real life.

What is coming next? Type 22?

Splendid!