Type 31 Frigate (Inspiration Class) [News Only]

Contains threads on Royal Navy equipment of the past, present and future.

What will be the result of the 'Lighter Frigate' programme?

Programme cancelled, RN down to 14 escorts
52
10%
Programme cancelled & replaced with GP T26
14
3%
A number of heavy OPVs spun as "frigates"
127
25%
An LCS-like modular ship
22
4%
A modernised Type 23
24
5%
A Type 26-lite
71
14%
Less than 5 hulls
22
4%
5 hulls
71
14%
More than 5 hulls
103
20%
 
Total votes: 506

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Gabriele
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Re: Type 31 - Future 'Lighter' Frigate

Post by Gabriele »

hmmm interesting Gabriele Type 26 hasn't been built yet !
Yeah. And in fact, CAMM on the Type 26 has its own holes, and does not use the 24 MK41 cells. It might use the ExLs stand-alone if it is found to ease integration on an electronics / combat system point of view, or not even that if there is no advantage to be had.

I know it is a quote from the MBDA website. You are just misinterpreting it. They are offering CAMM for adoption on new ships and on Sylver and MK41 ships. So, not surprising they position their missile for that.
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Re: Type 31 - Future 'Lighter' Frigate

Post by marktigger »

so they are probably aware that it will work in SYLVER tubes.

CAMM might have its own holes or it might go in Mk41 we'll see when they actually build one! so far we've just seen concept drawings and models.

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Re: Type 31 - Future 'Lighter' Frigate

Post by Gabriele »

CAMM might have its own holes or it might go in Mk41 we'll see when they actually build one! so far we've just seen concept drawings and models.
We are thankfully a bit beyond the concept phase at this point...
so they are probably aware that it will work in SYLVER tubes.
It should. But no one has funded integration and trials, unlike with the ExLs / MK41 experiment, so it is just a promise waiting for money.
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Re: Type 31 - Future 'Lighter' Frigate

Post by donald_of_tokyo »

shark bait wrote:On to the Venator concept, its not a very good one. Its a design for regional and coastal navy's, which the Royal Navy clearly isn't it has SSN's, Carriers and cruisers to support.
I do not think so. What RN lacks now is proper light frigate, the similar one many Europe navy has. ALL standing tasks can be done by it. Endurance of 4500nm may not be enough, but making it 7200nm is much easier = cheaper than having a large mission bay.
A small coastal frigate simply cannot achieve that;
  • Its too small to pack sensors to increase it sphere of influence
  • It wont have the endurance expected by a global navy
  • It cannot have the space demanded by a modern flexible general purpose frigate
  • Terrible margins for growth and rapid developments
  • Lacks the space to pack a stand off, multi domain weapons suite
  • Lack the influence to command a coalition task force
  • Looks like all the other european navy's that do very little
From my point of view, this can be counter-argued as follows.
  • A 977 on a 30m mast covers 87% of the range of those on 40m mast. No problem.
  • Endurance is needed (agree), but 7000nm is achieved by "one of the typical light frigate" ANZAC class.
  • A half-size mission bay is enough for modern frigate. RN will not have enough resource to fill large mission bays on T31.
  • Proper margine is needed (agree)
  • Stand off, multi domain weapons suites are in CVF, T45 and T26. No resource to put them in T31. Again, RN will even struggle to fill the CVF hanger.
  • T23 cannot command coalition task force. T31 lacking it is no problem.
  • I agree proper designing is needed, but there are several light frigates working well (although a bit larger in its class, ANZAC-mods, Iver Huitfeldt)

The point is, RN has 2 CVFs, 6 T45s and 8 T26s. RN will starve in resouce to fill them, and thus lack of large mission bay on T31 will not be a problem. On the other hand, it's cheapness will be the top-ranked figure of merit and provide credible assets to RN, which now lacks = number. As a system of sytem, a light frigate do not need to carry everything. This is the heart of the concept "system of systems", to my understanding.

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Re: Type 31 - Future 'Lighter' Frigate

Post by donald_of_tokyo »

marktigger wrote:The Kiwi's have Quad packed them on the ANZAC and The Type 23 is using them from the old seawolf silos Quad packed. I suspect Quad packing is a good idea and the Mk 41 does give a large degree of flexibility.
No. Kiwi is removing Mk.41 VLS, to my understanding.

Asia-Pacific Defence Reporter Oct 2015 issue
p.51
New Zealand is the first export cutomer and is buying 20 launchers per ship. The current Mk.41 VLS launcher system, which is capable of taking a range of missiles from Standard to Tomahawk to Sea Sparrow, is being removed. The new standalone launchers, which can only take Sea Ceptor missiles, are much smaller.

#note: someone in defencetalk site tried to confirm "20 launchers per ship" and the APDR office later agreed it is a mistake, must be 24.

CAMM need ExLS to be installed in Mk.41. ExLS can also be stand alone. Thus, Mk.41 VLS is just a dead-weight, bad for CoG issue, which is critical in ANZAC frigate. Thus, removing Mk.41 VLS is quite reasonable.

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Re: Type 31 - Future 'Lighter' Frigate

Post by GibMariner »

Excerpts from D.K. Brown's Rebuilding the Royal Navy: Warship Design Since 1945, which bears some resemblance to this "Future light frigate" situation today and some of the discussion it has stirred up here and elsewhere:
Cheap Frigates - Types 24 and 25
Around 1970 there were numerous studies for a cheap frigate under the title 'Future Light Frigate' led by Jack Daniel. The records of these designs have not been found but it is clear that none was found attractive since the only long-range sonars were big, hull-mounted sets, expensive in themselves and requiring a big ship.
In 1978 the DG Ships (Daniel) suggested a cheap frigate which would be attractive in the export market and could serve in the RN as a towed-array ship - Type 24. He thought it should look like the 'Castle' class offshore patrol vessel, as customers could be attracted by the armed 'Castle' and then persuaded to move up to a cheap frigate.
This made sense, as customer requirements would differ and a very small superstructure as in the 'Castle' made feasible a range of upper-deck armaments.
When the Type 24 died we decided to go back to our original study and develop it as virtually the capability of a Type 22 at three-quarters of the cost (one mast!) - Type 25. This begun to look very promising; we came up with the idea of diesel-electric cruising engines so that in the ultra-quiet mode a diesel in the superstructure with a long noise path to the sea could be used. At that time Forward Design Group were allowed - even encouraged - to freelance, though we had to seek the agreement of the Ship and Weapon Design Coordination Group at its next quarterly meeting if we wanted to pursue any study.
Just as we were beginning to see the Type 25 as a success, the new government decreed that new frigates should be limited to two-thirds the cost of a Type 22. The idea of a cost limit was novel and proved successful as there was little or no weight growth during the development of the design and there was little ministerial interference with the development of the design itself - 'All you want if it does not cost more than £100 million'. Advanced modular construction was introduced in warship yards for the Type 23 and the reduction in building costs enabled capability to be increased within the cash limit. The target set was close enough to our Type 25 for most of that study to be used, including the diesel-electric cruising plant.
Book available from here:

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Re: Type 31 - Future 'Lighter' Frigate

Post by shark bait »

donald_of_tokyo wrote:Endurance is needed (agree), but 7000nm is achieved by "one of the typical light frigate" ANZAC class.
Endurance is more than range. Endurance includes stores, magazine, aviation support, repair ect...
donald_of_tokyo wrote:A half-size mission bay is enough for modern frigate.
If that's the case why are the Americans, the British, the Italians and the Spanish all building modern frigates with generous mission spaces? Perhaps they just like to waste space, and there is clearly no utility in the design.
donald_of_tokyo wrote: RN will not have enough resource to fill large mission bays on T31.
The mission space may not be full on day one, but the entire point of the mission bay is to develop capabilities incrementally.
donald_of_tokyo wrote: Again, RN will even struggle to fill the CVF hanger.
Why do people judge the CVF for not operating 50 F35's the day after commissioning? these things take time.
donald_of_tokyo wrote:T23 cannot command coalition task force.
You mean what is arguably the most capable antisubmarine frigate in service?
donald_of_tokyo wrote: but there are several light frigates working well
No, light frigates do not work well. All they do is tag along on training exercises, or patrol calm waters. No present light frigate has proven its self in combat.
donald_of_tokyo wrote:Stand off, multi domain weapons suites are in CVF, T45 and T26. No resource to put them in T31
Then there is no point in the T31 existing. If it relies fully on the capable systems of the other platform there is no point in it existing.
donald_of_tokyo wrote:The point is, RN has 2 CVFs, 6 T45s and 8 T26s. RN will starve in resouce to fill them
No it wont. And resources are on the increase.
donald_of_tokyo wrote: As a system of sytem, a light frigate do not need to carry everything.
Correct, or it will end up like a T26. It does however need to carry something. CAMM and a gun do little to counter threats that can be solved by other existing assets. If you are building an asset that only duplicates existing capabilities there is little point in it existing.

The general purpose surface combatant needs to be able to pick and choose its equipment based on the deployment it is heading out on, much like other modern general purpose surface combatants like the LCS and PPA. Unless it can embark a specialist capability there is no point in it existing.

If money really is a crippling issue (it shouldn't be for a medium sized GP frigate), then take a leaf out of the Italians book and build it in full, light+ and light modes. At least that way we will have some very capable GP frigates, and some very flexible patrol frigates to meet a variety of needs.
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Re: Type 31 - Future 'Lighter' Frigate

Post by Lord Jim »

So what we need is a vessel which will have the same capabilities as the modified T23s will have but on a newer hull. That should tick all the boxes and be cheaper than the planned T26.

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Re: Type 31 - Future 'Lighter' Frigate

Post by Caribbean »

Lord Jim wrote:So what we need is a vessel which will have the same capabilities as the modified T23s will have but on a newer hull. That should tick all the boxes and be cheaper than the planned T26.
Or similar, since we are talking about a GP frigate. A point that some of us have been trying to make for a while. Unfortunately others seem to have taken the stance that if it isn't a T26, it must be a light frigate and of no use whatsoever
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Re: Type 31 - Future 'Lighter' Frigate

Post by ~UNiOnJaCk~ »

^ Indeed. Which is why i personally still stand behind the Venator concept. It is the closest thing i can see, drawing board proposal or otherwise, to a modern day T23 without the expensive ASW kit. For me, it is precisely just such a concept that we should be looking for.

In all fairness, over the last few dozen pages i think some people have gotten a bit carried away and or lost sight of what the T31 programme is meant to be an exercise in. There have been some very fanciful, almost pie in the sky type notions (no offence) that have looked to be every bit as ambitious and, no doubt, expensive as the Type 26 itself.

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Re: Type 31 - Future 'Lighter' Frigate

Post by shark bait »

So our future frigate, that will be with us for the next 50 years, needs to be the reincarnation of a frigate conceived in the 70's? Our partners are not building platforms like that for a reason, they are not prepared to meet modern challenges.

There is nothing "pie in the sky" about a medium sized frigate, that is inherrently flexible, with a big mission bay. It's what a lot of our friends are doing, I don't think their naval leaders and engineers are "pie in the sky".

The T26 is a very big frigate, the venator is a very small frigate, we need to build a frigate sized frigate.
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Re: Type 31 - Future 'Lighter' Frigate

Post by ~UNiOnJaCk~ »

I disagree. The Americans have yet to build a frigate and their latest, closet attempt at something even vaguely like one is increasingly considered to be a lame duck without obvious purpose. Our European colleagues are, as we speak, all in the process of designing and or even finalising aspects of light frigate concepts - some of which look to be highly credible and may well serve as a source of inspiration in our own efforts (PPA, F110, FTI etc).

Where people are making the mistake in my opinion is assuming that the T31 needs to be a direct shoe in for the T26 GP. Rather than attempt to emulate what the T26 GP variant was supposed to provide, i firmly believe we need to consider the T31 as a whole new approach to the GP concept.

As has been suggested before now, given what was likely to be expected of it, many considered the T26 in the GP role to be a wasted asset anyway. I do find myself asking what exactly did it promise to bring to a task force? Why wouldn't a smaller vessel be a more appropriate asset for many of our standing tasks?

Moreover, what is a frigate these days? I say the term is warped beyond all recognition. The ships that we are building today mostly have little to no relation to the core terminology to which they claim to be associated. Take the Type 26. Its closest analogous counterpart would likely be the cruisers of the last century.

Frankly i would consider the Venator or T23+ type concept to be getting back to the roots of what a frigate is actually meant to be. A cheaper, yet credible asset that can be knocked off in numbers to sustain the RN's numerous commitments around the globe. In times of conflict these assets can be gathered together to enhance aspects of the high end capability offered by our capital ships. What they do not need to be, and where we are making the biggest mistake in this thread, is condensed T26s, or condensed T45s. We need to start treating the T31 as an individual concept and properly appreciate what its likely place in the RN will be before moving on with the discussion, IMHO.

And just to be clear, no one is advocating building a like for like 'modern day' T23. What people want to see is the essence of what made the T23 so successful for the RN captured in a vessel more appropriate for the 21st Century. Some of the proposals bandied about over the past weeks are, in my opinion, just way too ambitious to do that. A little bit of conservatism, with a willingness to accept some compromise, yet offset by a clear and achievable vision is what is required to my mind.

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Re: Type 31 - Future 'Lighter' Frigate

Post by arfah »

Lord Jim wrote:So what we need is a vessel which will have the same capabilities as the modified T23s will have but on a newer hull. That should tick all the boxes and be cheaper than the planned T26.
This is a quote of mine from page 10
Arfah wrote:f I was designing a light frigate, i'd refer to the T23's without the ASW fit as a basis then see what luxuries can be done without.
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Re: Type 31 - Future 'Lighter' Frigate

Post by bobp »

I quite like the Venator design. I don't know if the government are looking at it, but it would more than cover the roles of a T23, and has a mission bay large enough for two large RIB's.

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Re: Type 31 - Future 'Lighter' Frigate

Post by marktigger »

what do you define as a frigate sized frigate my thought is between type 21 & type 23 in length and type 23 in beam

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Re: Type 31 - Future 'Lighter' Frigate

Post by shark bait »

~UNiOnJaCk~ wrote:I disagree. The Americans have yet to build a frigate and their latest, closet attempt at something even vaguely like one is increasingly considered to be a lame duck without obvious purpose. Our European colleagues are, as we speak, all in the process of designing and or even finalising aspects of light frigate concepts - some of which look to be highly credible and may well serve as a source of inspiration in our own efforts (PPA, F110, FTI etc).
The Americans have found the flaws in their designs, and now have a plan in place to fix them. The Americans are usually very good at supporting their equipment, thanks to deep pockets, I wont be surprised if the LCS gets fixed and becomes a valuable work horse. (the same will happen for the F35)

The PPA and F110 are strong concepts. We should defiantly be drawing inspiration from them.
~UNiOnJaCk~ wrote:i firmly believe we need to consider the T31 as a whole new approach to the GP concept.
I wholly agree with you. The T31 presents a great opportunity to produce a valuable frigate for the future, that can become the work horse of the Royal Navy. Sticking to the 70's definition of a GP surface combatant will be an opportunity wasted.
~UNiOnJaCk~ wrote:I do find myself asking what exactly did it promise to bring to a task force? Why wouldn't a smaller vessel be a more appropriate asset for many of our standing tasks?
The Royal Navy has the huge task of supporting a nuclear deterrent and a massive carrier at the same time, with amphibious warfare on the side. Any surface combatant flying the white ensign has no choice, it has to be able to offer some specialist capabilities in support of these core responsibilities. Leaving the protection of these critical assets just to the T45 and T26 is spreading them very thin.

There is also a requirement for standing tasks, however it is a mistake to design a surface combatant purely for peace time standing tasks, it has no deterrent effect, and little use when things turn bad.

A small vessel may be appropriate for some standing tasks, but it is not appropriate for intense naval warfare.
A larger vessel is appropriate for standing tasks, and is also appropriate intense for naval warfare.

We need to have a suitably flexible surface combatant that can preform equally well on simple standing tasks, as it can operating in more specialist roles. A medium sized frigate that can embark a small crew and light weapons fit for standing tasks such as APTs, but then it has the inherent flexibility embark a larger crew and specialist equipment in support of other valuable assets in a task group. There is no technical reason why that frigate cannot be built, it would become the Ute of the Royal Navy, that can tailored to do what is demanded, when it is demanded.
~UNiOnJaCk~ wrote:Frankly i would consider the Venator or T23+ type concept to be getting back to the roots of what a frigate is actually meant to be.
How is this "considering the T31 as a whole new approach to the GP concept"? it is a 50 year old concept.

It was sounding very promising, then it flipped from, "new approach" to "back to the roots"
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Re: Type 31 - Future 'Lighter' Frigate

Post by shark bait »

marktigger wrote:what do you define as a frigate sized frigate my thought is between type 21 & type 23 in length and type 23 in beam
The T26 is a big frigate at 150m long
The Venator is a little frigate a 110m long
So lets go bang in the middle at 130m long

That just so happens to be the size of the T23 (an old GP Frigate), or the independence class (a modern GP frigate).

Its not unreasonable that a frigate could be built around that size, with a small crew, flexible equipment and a mission bay and still be cheaper than the finely tuned, highly specialist T26.
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Re: Type 31 - Future 'Lighter' Frigate

Post by marktigger »

post 1945 UK frigates

type 15 109.2Mx10.9M
type 11 112.7Mx12.5M
type 14 94.5Mx10.7m
type 41 103mX12.2m
type 61 103mX12.2m
type 81 109.7mX12.9m
type 12 112.7mx12.5m
Leander 113.4mX12.5m
Leander 113.4mX13.1m (Broad Beam)
Mermaid 103.4mX12.2m
type 21 117.0mX12.7m
type 22 131.2mX14.8M (batch I)
type 22 148.1mX14.8m (batch II)
type 22 148.1mX14.8m (batch III)
type 23 133mX16.1m

so the average is 116.8mX12.9 so closest average size post war UK frigate is the type 21

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Re: Type 31 - Future 'Lighter' Frigate

Post by Engaging Strategy »

~UNiOnJaCk~ wrote:I disagree. The Americans have yet to build a frigate and their latest, closet attempt at something even vaguely like one is increasingly considered to be a lame duck without obvious purpose.
The LCS' poor execution really put a big question mark over many otherwise good ideas. As I've said before I think there's a lot of scope for looking at a Trimaran frigate, as it allows you to pack more capability into a smaller overall package than a conventional monohull ship. At its core the LCS isn't a bad idea: modular, cheap and mass produced. It just got horrendously bloated with useless rubbish at the expense of useful capability, the waterjet propulsion and 40 knot speed requirement should never have gotten past the design phase.
Our European colleagues are, as we speak, all in the process of designing and or even finalising aspects of light frigate concepts - some of which look to be highly credible and may well serve as a source of inspiration in our own efforts (PPA, F110, FTI etc).
That depends entirely upon your idea of "highly credible". The current generation of "light Eurofrigates" are useful as heavy patrol ships, but when the shooting starts they're sat at the back a goodly distance from the areas of greatest threat (which is where the USN, RN and a few "first rate" combatants from other countries typically are). I wouldn't be too optimistic about the growth margins (in terms of space and power generation) of such ships either.
Where people are making the mistake in my opinion is assuming that the T31 needs to be a direct shoe in for the T26 GP. Rather than attempt to emulate what the T26 GP variant was supposed to provide, I firmly believe we need to consider the T31 as a whole new approach to the GP concept.
Ok, whole new approach it is. So, first principles: What will it do that another type of escort can't? Will it do one thing well and lots of other things poorly or be a "jack of all trades master or none" like past "GP" ships?
As has been suggested before now, given what was likely to be expected of it, many considered the T26 in the GP role to be a wasted asset anyway. I do find myself asking what exactly did it promise to bring to a task force?
Type 26, without TASS, is a big flexible platform. Cells for CAMM and a range of utility missiles through Mk.41, a big gun, lots of space for a sizable EMF and associated boats, task group command facilities, big multi mission bay for UUVs and manned/unmanned FAC, aviation facilities for 2 Wildcat or a Merlin HM.2 "flying frigate". T-26 brings a massive amount of capability with it. It's far more than just an excellent ASW frigate, it's essentially a tremendously flexible multi mission cruiser.
Why wouldn't a smaller vessel be a more appropriate asset for many of our standing tasks?
Why smaller? If you want a cheaper patrol ship well suited to WIGS/ATP-S the build a few more Bays, arm them with a 5" gun & a CIWS and stick a hangar on the back. Voila, a long range patrol ship with a useful "wartime role": providing additional amphibious lift and logistics capacity.
Moreover, what is a frigate these days? I say the term is warped beyond all recognition. The ships that we are building today mostly have little to no relation to the core terminology to which they claim to be associated. Take the Type 26. Its closest analogous counterpart would likely be the cruisers of the last century.
I've no problem with that assessment. I think you have to look to the inter-war period for enlightenment on what the modern Royal Navy is evolving into. A strong "battlefleet" in and around the UK (the Carrier group, amphibious group and SSNs) with a series of independent cruisers on distant stations representing the UK's interests there. The question over the "lighter frigate" is fundamentally about what form those "cruisers on distant stations" should take.
Frankly i would consider the Venator or T23+ type concept to be getting back to the roots of what a frigate is actually meant to be. A cheaper, yet credible asset that can be knocked off in numbers to sustain the RN's numerous commitments around the globe.
How? Both are totally different ships. Venator is a classic "light frigate" designed for patrol work and Type 23 is, fundamentally, a cold war legacy platform designed for ASW in the North Atlantic and incorporating key lessons from the Falklands (like the need for a gun and capable self-defence missile system). Ultimately we could produce a ship like Type 23 cheaply because it was built at a time when our cold war military shipbuilding infrastructure was still largely intact. What followed was a severe contraction in orders, which led to a contraction in capacity and skills that drove up costs. The recent "feast and famine" build schedule has exacerbated that and driven up costs even more. A much cheaper Type 26 likely would've been possible twenty years ago, as Type 23 was.
In times of conflict these assets can be gathered together to enhance aspects of the high end capability offered by our capital ships. What they do not need to be, and where we are making the biggest mistake in this thread, is condensed T26s, or condensed T45s. We need to start treating the T31 as an individual concept and properly appreciate what its likely place in the RN will be before moving on with the discussion, IMHO.
Okay, but what will this ship do that the Type 26/45 can't (except be cheaper)?
And just to be clear, no one is advocating building a like for like 'modern day' T23. What people want to see is the essence of what made the T23 so successful for the RN captured in a vessel more appropriate for the 21st Century.
What made T-23 so successful was wartime experience, an unambitious "evolutionary not revolutionary" design and a robust shipbuilding industry with a continuous drumbeat of orders. We built sixteen of them, sixteen!
Some of the proposals bandied about over the past weeks are, in my opinion, just way too ambitious to do that. A little bit of conservatism, with a willingness to accept some compromise, yet offset by a clear and achievable vision is what is required to my mind.
If we want to follow in Type 23's footsteps then actually we should be looking at replicating as much of the equipment developed for the Type 26 as possible, "evolution not revolution" needs to be the guiding philosophy. Fundamentally I think the other key lessons from Type 23 are that you need a robust shipbuilding industry, a continuous drumbeat of order and a long production run to get really impressive savings. Maybe look at building 10+ of these things, if it's just 5 though they won't be cheap.
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Re: Type 31 - Future 'Lighter' Frigate

Post by shark bait »

marktigger wrote:so the average is 116.8mX12.9 so closest average size post war UK frigate is the type 21
Whilst interesting, in the context of the T31 that average means nothing. That average only considers the past, not any future concepts of operations of how to build the navy of the future. The way things where done in the past does not alone justify how things should be done in the future.

I'm sure if you considered averages only you could determine the Royal Navy builds its ships out of trees and powered by the wind.
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Re: Type 31 - Future 'Lighter' Frigate

Post by Gabriele »

There are few things in the world which make less sense to me that obsessing with frigates while at the same time so eagerly doing away with the ASW role and related kit.

Never mind that submarines are probably the most dangerous thing the RN could ever face, and the most difficultly countered menace. Let's just consistently ignore their existence to build CAMM + 127mm ships of dubious usefulness.

Next proposal, up-arm and up-engine the Hawk T2, but without air to air radar, and use it to make up 38% of the fighter strenght of the RAF.
Makes about as much sense as "GP frigates" making up 38% of the Royal Navy's frigate total.

Either it is an escort, capable to do ASW while using CAMM to survive missile attack and hopefully provide some protection to the convoy / task group elements in the immediate surroundings, or it is not.
If it is not meant to "escort", it does not need to be a frigate, and it should not be one either, as a boxier hull able to carry more stuff will be far more useful in the variety of peacetime, constabulary and "defence engagement" tasks around the world.

The FTI won't have Scalp Navale, but will have the ASW fit. I'd very much rather go that way than the other way around.

The Type 23 is a good GP frigate... because it was not born as one. The Type 23 frigate is "GP" because it can do a bit of everything. Save for the ones which no longer have the ASW "tail". Those are just handicapped ships which have had a whole lot of their wartime / high end usefulness curtailed.
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Re: Type 31 - Future 'Lighter' Frigate

Post by marktigger »

we built 26 Leander class frigates for the Royal Navy and loads more for export or under licence. Again it was an evolutionary frigate going from the Type 11 through the 41, 61 and type 12. So it has been one of our most successful frigate designs. But the first one was laid down in 1959 and the last one was laid down in 1970 and they were built in the UK in more than 10 different yards. So you had a long program and capacity for that.

The Type 26 is slightly bigger than the type 22/III which is one design of frigate that should have evolved further and more should have been built. But its interesting the type 23 will be replaced by half the numbers of type 26 like the type 42 was replaced by half the number of type 45. It would be good if the number of type 31's increased to 8.

Type 23 was always a limited design it was meant to be cheap. Not to be refitted and destined to work in a narrow geographic area doing a highly specialised role. The Type 22 evolved out of the dedicated ASW frigate into the type 22/III which for some reason was very widely used to the point they were flogged to death. I know some foreign navies were itching to buy them when the Royal Navy began to cast the 22/I & 22/II personally I'd have like to have seen the 22/II curtailed to 4 vessels and the remainder built as 22/III and that evolve into a further design. But the type23 did mature well.

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Re: Type 31 - Future 'Lighter' Frigate

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shark bait wrote:
marktigger wrote:so the average is 116.8mX12.9 so closest average size post war UK frigate is the type 21
Whilst interesting, in the context of the T31 that average means nothing. That average only considers the past, not any future concepts of operations of how to build the navy of the future. The way things where done in the past does not alone justify how things should be done in the future.

I'm sure if you considered averages only you could determine the Royal Navy builds its ships out of trees and powered by the wind.

having a historic average is useful when deciding what is a large or small frigate. Looking into the past some of our patrol boats now are bigger than some of our frigates. But then could you see a river with 4x4.5 inch guns in 2 double turrets?

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Re: Type 31 - Future 'Lighter' Frigate

Post by marktigger »

and our last GP frigate the type 81 did do some interesting things like Gas turbines and small helicopter operations. though the hanger configuration has never (much to the fleet air arms relief) been repeated.

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Re: Type 31 - Future 'Lighter' Frigate

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marktigger wrote:we built 26 Leander class frigates for the Royal Navy and loads more for export or under licence. Again it was an evolutionary frigate going from the Type 11 through the 41, 61 and type 12. So it has been one of our most successful frigate designs. But the first one was laid down in 1959 and the last one was laid down in 1970 and they were built in the UK in more than 10 different yards. So you had a long program and capacity for that.
Industrial capacity aside for a moment, what made Leander so successful was the fact that they sat at the apex of an evolutionary process. The design was so good, so well refined, that when the MoD came to build a completely new "revolutionary" frigate (Type 22) they shamelessly copied from the Leanders. Under the water Type 22's hull form is strikingly similar. If we want to replicate this success this with the "lighter frigate" then it needs to be an evolution of Type 26 rather than a wholly separate design.
The Type 26 is slightly bigger than the type 22/III which is one design of frigate that should have evolved further and more should have been built.
IMO the Type 26 is absolutely the spiritual successor to the batch 3 Type 22, a big flexible "cruiser". Excellent at ASW, but not overly specialised that it compromises other aspects.
But its interesting the type 23 will be replaced by half the numbers of type 26 like the type 42 was replaced by half the number of type 45. It would be good if the number of type 31's increased to 8.
To be honest HMG made a massive pig's ear of Type 45. What should've been the escort class that plugged the gap in work between Type 23 and Type 26 turned into a half hearted short run with a three year gap in between. If Type 45 had been ready to go into production directly after the completion of Type 23 #16 we'd probably be looking at 10 hulls right now. We need to get used to a running a proper continuous shipbuilding process. In return we'll get more ships and they'll likely be cheaper.
Type 23 was always a limited design it was meant to be cheap. Not to be refitted and destined to work in a narrow geographic area doing a highly specialised role. The Type 22 evolved out of the dedicated ASW frigate into the type 22/III which for some reason was very widely used to the point they were flogged to death. I know some foreign navies were itching to buy them when the Royal Navy began to cast the 22/I & 22/II personally I'd have like to have seen the 22/II curtailed to 4 vessels and the remainder built as 22/III and that evolve into a further design. But the type 23 did mature well.
Type 22 Batch 3 couldn't have replaced the later Batch 2s, the B3s were a direct result of lessons learned from the Falklands: the gun, potent CIWS, importance of AShM etc... They were also, officially, built to replace the RN's losses in that war. Hence four ships. The Type 26 is probably as close to an evolution of the Type 22 Batch 3 as you're liable to get. It certainly bears little resemblance to the comparatively simple Type 23. Maybe what we need now is a modern Type 23, a simple ship outfitted for ASW work in the north Atlantic. In this instance you could reduce endurance (although not massively) and focus on doing a single set of useful tasks: TAPS, FRE, UK guard ship, operations in the NATO Atlantic and Mediterranean areas etc... operations further from home would be as an ASW component of a task group with supporting RFAs to mitigate the shorter range. As a concept I think it's got legs.
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