Work to prepare Challenger 2 tanks before the upgrade to ‘Challenger 3’ has started.

DE&S say that the British Army’s Challenger 2 fleet is due to receive a base overhaul as part of its standard in-service maintenance schedule.

“This will be followed by a series of automotive upgrades under a ‘Heavy Armour Automotive Improvement Programme’ (HAAIP) which ensures the British Army’s Challenger 2 vehicles remain highly effective and capable until Challenger 3 enters service. The HAAIP programme is being led by DE&S, with engineering work completed by Rheinmetall BAE Systems Land (RBSL) and integration work by Babcock.

Under the programme, a number of automotive upgrades will be made to existing in-service Challenger 2 tanks to increase their mobility and stability, both of which are critical to providing the foundation for the new turret and systems that will upgrade the vehicle to a Challenger 3. The upgrades will also ensure the tanks remain mobile and agile in the battlespace.”

Brigadier Anna-Lee Reilly, Head of the DE&S Vehicle Support Team, was quoted as saying:

“This is an exciting moment for Defence. We’ve been committed to keeping the Challenger 2 tanks in service over the past 23 years and we’re looking forward to using our expertise to manage the necessary upgrades to pave the way for the Challenger 3.”

As part of the base overhaul process, each Challenger 2 will be stripped to bare hulls and subjected to ultrasonic inspection, weld repair and repainting. Every component is removed and inspected for serviceability to ensure that the vehicle is as close to new as possible when it is rebuilt.

What upgrades will Britain’s ‘Challenger 3’ tanks get?

According to the British Army, the overhaul will include:

  • a new 120mm smoothbore gun which uses the most advanced globally available ammunition
  • a new suite of sights providing tank commanders with enhanced day and night targeting abilities
  • new modular armour
  • Trophy active protection system
  • a turret that can be fitted to the tanks of allies and global partners

You can read more about the contract to upgrade the tanks here.

Contract awarded to RBSL for 148 ‘Challenger 3’ tanks

George Allison
George has a degree in Cyber Security from Glasgow Caledonian University and has a keen interest in naval and cyber security matters and has appeared on national radio and television to discuss current events. George is on Twitter at @geoallison

151 COMMENTS

  1. I do wonder why there has been no mention of an upgraded commander’s weapon station- we seem to be the only developed nation not to have one on our MBTs.

  2. I feel like this allays some of the “It’s only a Challenger 2a/2.5/2 MkII” complaints, okay it won’t be a completely brand new vehicle, but it will be as close as possible.

    • That’s my take as well.

      In my world a T23 built in the 90s is nothing like the ones steaming around today.
      After the refits, overhauls , capability insertions and new equipment fits they are a totally different beast.
      They should have renamed them T24!
      Imagine the furore that would have generated!

  3. Does anyone know what’s going to happen to all the remaining (70+?) tanks that won’t get the upgrade? Will they be kept as a backup in a big shed somewhere as spares?

      • Once the first batch has been done and proven, the army should take the works in-house and slowly modify the remaining inventory over the years. Doesn’t need to be done quickly and I’m sure the army could do the procurement and fit out cheaper than the contractor once the creases have been ironed out of the process.

      • If no one is looking, maybe the remaining machines can be hidden away in the many sheds and hangers at the Army’s disposal? 148 is so painfully small, which leaves the Army wanting if it gets embroiled in a land conflict. I feel sure some 2’s will be retained to cover the possibility of battlefield losses?

        • Yes, let’s hope so. I’d like to see 160-200 fully upgraded new tanks with spares just in case. The more you have the more fronts you can potentially engage in and be a bigger support to our allies. Does anyone know why 148?

          • More fronts?

            Not any more. There are only 3 Armoured Regiments now, and that was already planned to reduce to 2 with the Strike Brigade fiasco.

            With 2 Armoured Regiments,1 per Armoured Brigade ( or HBCT as it’s called this week) we lack the units to put more in.

            148 furnishes 50 odd per regiment and leaves some spare and some at BATUS and at the Armour Centre at Bovington.

            I’d prefer the army get more aviation, ISTAR, artillery, and SHORAD to more Tanks.

            Or extra enablers from the R Signals and Royal Engineers.

          • Morning Daniele, from Sydney, I guess battlefront scenarios are evolving and we need to adapt to that but having a strategic reserve of an asset like tanks of say 50, wouldn’t that be sensible for the UK? We’re still a global player and if called on and our LRGs are deployed in multiple locations they may need to have some back up tank stocks to sustain them. Maybe I’m over imagining. I’m absolutely no expert, just interested in how they come to these rather odd numbers. We do work more in coalition these days, which is a good thin and having a strong level of soft power is very useful, so strong RFA, logistics air/road and sea, humanitarian relief ability, which we have, is all good for keeping Britain active on on the world stage.
            Agree on all the others especially artillery, precision fires, more shorad/Sky Sabre, ISTAR and should we mention it, some decent IFVs. I’d like to see an RAF type regiment for all the RN Ports, maybe a shared set up, and even some longer range SAM capability for the UK mainland.

          • We bought 408 CR2s as I recall, so in declaring 227 tanks it means that 181 have been in storage for many years, most of them are probably ‘Christmas trees’.
            148 is two Type 56 regiments plus 36 for the training organisation and an Attrition Reserve.

          • I am aware of that. The BATUS tanks, and any in storage in Germany will be part of the 227.

    • The Word was the best of the rest will be stored, and the old bangers will be scrapped.
      If there is spare money and numbers can be increased they will. BUT ammunition is going to be an issue.

    • Knowing our wise leaders they will probably all get sold to the Americans for the princely sum of one pound each and used as target practice in America for their M1 tanks. Im joking off course but I dont underestimate the stupidity of the people that make up our government.

  4. I’m still not convinced the change of main gun is really necessary. Better to have stuck with BAEs more modest proposal and upgraded the entire fleet to that standard. 148 does not allow much for losses and hopes of supplementing heavy armour with Ajax are not looking promising.

    • The upgrade from rifled to smooth bore guns is important. Armoured Piercing ammunition, fired from the latter has a much higher muzzle velocity, and so increased armour defeating affect. We can also make use of a much wider range of ammunition types than with our own, UK only rifled main gun.

      • I heard that the decision was based on the fact that we aren’t making ammunition anymore and we don’t want the cost of having to design and make new ones ourselves.

        • It’s a little of both. Ammunition for the Smoothbore gun has seen a lot of development in the last 30 years, while rifled ammunition, well, hasn’t. Combine that with the cost of running a ammunition production line that can only sell to the UK, and you have a gun that’s now become less effective and more expensive to maintain than the smoothbore equivalent.

      • I did find a site that had a comprehensive comparison of the range and armour penetration of various tank guns. Mainly because of the longer rod in the smoothbore round, the penetrative power was greater at most ranges. The difference was minimal if the rifled round used du rather than tungsten. Offsetting this, the rifled gun was much more accurate at longer range when firing HE rounds.
        It seems possible that UK will have to write off the£3 b already spent on Ajax and fund an alternative. If that happens then the money now allocated to the new turret and gun might be better spent on that alternative afv.
        It’s not a good start for the new defence land industrial strategy announced earlier this year.

        • I don’t see why the MoD does not direct GD UK to rework Ajax to acceptable standard or sue them for Liquidated Damages.

      • Indeed if we are ever embroiled in tank battles then we will be doing so with allies and being able to exchange ammunition would be invaluable bo doubt especially as we will be fighting in others backyard bot ours.

      • The gun’s muzzle velocity was not the overriding factor, nor the lack of manufacturers. It was primarily due to the dart’s length within the CHARM’s APFSDS, which had reached a physical limit. The sabot is rammed in the chamber followed by the bag charge. The bag does not envelop the dart’s fins. Therefore, the dart cannot be made any longer or more propellent used, without the sabot actually entering a lot more of the barrel. Whereas, one piece ammo allows for a dart that is nearly 1m long as the propellent within the cartridge envelops the dart’s tail and fins.

        The length of the dart is critical to overmatching spaced armour in particular. If the dart is shorter than the space between the two faces of armour, it will yaw, then strike the next face of armour at an oblique angle and possibly not penetrate. With a longer dart, there is less chance of it yawing, thereby having a better chance at penetrating the next face of armour. It also means that the longer dart has more mass which helps it push through composite armour, compared to a lighter one, that’s looses energy slightly quicker.

    • Tend to agree if value for money was the only criterion. But building a relationship with Rheinmetall keeps UK PLc in contact with development of the next generation of European main battle tank.

      • I’m not unhappy with the upgrade though would prefer larger numbers. I also guess that because this project is fitting an existing proven turret and gun, we will avoid the shambles of Warrior and Ajax.
        Before we have to build the next generation of afvs, we really need to resurrect our sovereign capability so we are not almost wholly dependent on foreign suppliers.

        • Well we would all like to see greater numbers. I think the French have got the CT40 turret to work on the vehicles they have built. I read somewhere that we decided not to take the gun in vanilla format but to reroute the ammo feed to make better use of space in the turret. In fairness HM Gov is trying to rebuild sovereign capability in armoured vehicles but are making hard work of it since they are following the principle of ‘anyone but BAe’. Why make things easy when you can make them difficult eh? No fun in that..

          • They are trying…jobs in Stockport and Telford. I know it’s not much. They are making it difficult for themselves by shutting out BAE. What my grandmother would call cutting off your nose to spite your face …mind you having said that if we had bought Cv90 for example where would it have been built?

        • BAE is our sovereign AFV capability. They took over the 5 former AFV companies. Pity though that they got rid of the new tank factories at Leeds and Newcastle due to lack of orders a decade or two ago.

  5. This is good news, CR2 was slow and outdated. It struggled when compared with our NATO allies tanks, and potential adversary nations. CR3 should under the current plan be a great MBT.

    • Confident prediction, Chally 3 cancelled after £600 million spent in the 2025 SDSR, who wants a wager??

      Do I have any offers over £600, roll up, roll up…..

      • Sorry, but you are incorrect Ron. I have been to international tank competitions, firing on ranges both static, and on the move over rough ground. Competing against the French, US, Spanish, and Germans. Our CR2’s were the slowest MBTs taking part.

    • I don’t see how anyone can say CH2 is outdated when a majority of tanks in the world are T-72s / T62s and T55s

      • You are outdated if your potential rival has a more modern tank. The T14 is potentially the adversary of the CH as such tanks would spearhead an attack.

        If you do not keep ahead of your foe you are just target practice.

        • would really say they are gonna spear head a Russian tank rush considering they only have about a 100. but yes your right we need to look out for small pockets where they may be hiding.

        • Yes, I understand that but my point is the MOD seems to be in a rush to reduce CH2 numbers, quoting obsolescence as one reason, but I don’t see the countries that field huge numbers of T72s, T55s, or even M48s doing the same.

          Whilst CH2 is not the most modern tank anymore, it is still a very good tank, its combat record proves that. We were foolish to withdraw/scrap ANY of them, we should have kept and upgraded them all while looking to design the next generation.

          • Agree, I wish we could upgrade all the CH2s to CH3 but we have not got the funds. We however should keep some CH2 in storage as reserves. We should also work on a future tank design…

          • We’ve done that before. We bought 408 CR2s so we already have 181 in mothballs, albeit many now probably stripped for spares.

          • MoD has reduced CR2 numbers several times over the years. I believe we originally bought 408. Reason for latest reduction to148 (CR3) seems to be to provide structural and financial headroom for Strike.

        • I wouldn’t say it’s the T14, but more the upgraded T90. Though based on the old T72 chassis, it has had a lot of lessons learnt built into it from the T72s fighting in the Gulf wars and more lately with the T90s being used in Syria. This is especially true with regards to the use of explosive reactive armour. The 2nd gen Kontakt-5 was designed to counter the US “silver bullet” depleted uranium APFSDS rounds. That was used so effectively against Iraqi T72s. This is being replaced by the 3rd gen Relikt ERA, that is supposed to be even better. The Challenger’s CHARM3 rounds will struggle to get past these.

          The T14 is another generation above the T90, with a supposed even better ERA. The CHARM3 will seriously struggle to get a frontal pen against the crew’s armoured box, but could still get a mobility kill and possibly damage the remote turret. This is one of the reasons why the proposed Franco-German MBT has a requirement for a 130/140mm gun, as the extra performance it produces may be enough to penetrate T14 frontally.

          • Yes I hope the new CH3 turret has enough upgrade space for 130/140 future upgrade. Also with such heavy shells an auto-loader would be essential.

          • Yes, for the larger one piece rounds they will have to use an autoloader. The 130mm Rhinemetall rounds are 1.3m long. Besides the weight, a loader wouldn’t be able to grab one from a ready rack then turn it through 180 degrees to feed it into the breech. The system used by the Leclerc is now a solid and dependable system. France have used a modified version of it for the Leclerc armed with the 140mm gun.

          • Wondering if NATO could develop a cannon or artillery round that causes large areas of the Reactive armor to detonate all at once and leave the tank vulnerable to Sabot again.

          • It’s technically already possible. A standard 155mm HE shell striking the tank’s explosive reactive armour (ERA) would activate some of the modules, due to either direct contact or from the resulting pressure wave. Leaving these areas vulnerable to a armour piercing fin stabilized discarding sabot (APFSDS)(Fin) round.

            The Challenger’s HESH round can do this. As it’s a low velocity shell, it doesn’t always immediately detonate ERA. The newer Relikt and Malachit ERA was designed to cope/activate with low velocity rounds/shells.

            HESH is basically a shell shaped lump of C4 plastic explosive, with a fuse in the back. When it hits an object it momentarily sticks to it, looking a bit like a cow pat. The rear mounted fuse then activates, detonating the explosive. The generated shockwave will activate the tank’s ERA. Thereby leaving a gap for a Fin round. The number of ERA modules that can be cleared depends on the area of the cow pat. A HEAT round will do much the same, but over a much narrower area.

            It would then come down to how quickly the targeted tank can respond before you fired the Fin round at the gap. But also how accurate you gun is at putting the follow up round into the gap.

            The newer type of Fin rounds are segmented in to two parts. The first part is sacrificial and is designed to activate the ERA, leaving a path for the main rod/dart to punch through the passive armour. However, this will shorten the rod length whose effectiveness is then dependent on the size of the gap in the spaced armour.

            So the most effective type of armour combines ERA with spaced and backed up with composite. Which means it has to have plenty of depth. The latest version of the Leopard 2’s turret is a good example of this. Though I’ve only seen the a Polish ones with ERA fitted. The very long turret front is due to the spaced armour gap.

          • My cousin is REME and has worked Challengers for years. Also one of my mates was a Squadron commander for the Scots a while back, before he time-ex’d. I’m more engineering but have played at infanteering and JSAT, found out I was ok at it.

          • Ah I see, I get a bit of info from family also, from my young bro who is 7RHA, just considering an LE commision and my grumpy older bro was 4/7 RDG in detmold late 80s, early 90s. On the occasion I managed to get over there and have a root about in a Chieftan it made me realise I made the right choice…..tanks, far to dangerous mate lol

    • From what I can gather the hydro gas suspension gives a much smoother ride than torsion bar suspension.giving a more stable platform all round.
      What gunnery competitions have we missed then?

  6. Reducing our tank strength down to 148 vehicles, makes you wonder if its worth the upgrade. Tanks aren’t quite obsolete yet. Might have been better to buy 400 latest Leopards marks and still have a credible armoured force.

      • Affordable – not a major concern. 148 will be a waste of money if they don’t give a credible armoured force and are walked over by Vlads tanks. Getting beaten in a war is a major cost. Like we never lose a war….oh wait a minute!! If the government can afford billions on overseas aid, it can afford a capable army. That’s where I want my tax money going.

        • Let our European NATO allies concentrate on larger Armoured formations and we provide both the lighter and more niche capabilities. They are landlocked, and Poland is an excellent example of a country understanding the threat and rearming accordingly. Yes we do need an armoured divisional structure to keep us in the game and to ensure we have a rounded capability, but such large numbers aren’t required, in my view, at this time. However threats change and we need to be able to change/counter those variables. Cheers.

          • I agree, I have argued and will keep arguing that the main fighting force of the Army should be based on a main battle tank div and two divs of a modern Alvis CVR (T). The infantry would be what I call heavy infantry such as the Guards. That would give a fighting strength of 36,000 troops. That then leaves the light infantry/ranger units with Boxer. I think the RAF Regt and the RM could also get Boxer. As for the Paras possibly a modern version of something like the old German Wiesel could be of use. That should keep troop numbers within the 85,000 range plus reserves.
            I agree with your comments about Poland, a smaller army in troop numbers but about five times the strength in tank numbers.

          • Three deployable divisions! That sounds good, but surely that amounts to more than 36,000 troops? Could a recce vehicle such as your new CVR(T) really act as the mainstay of two divisions – such small vehicles, so little firepower.

          • Graham, maybe things have changed but I have alway used 10,000 troops for a division, three divisions form a Corp and three Corps form a field Army. I suppose those numbers have increased a bit due to extra things like support troops R.Sigs/REME etc. So that is why I suggest 12,000 per div.
            As for the two light divisions with a upgraded CVR(T) concept family, the light tank could have a 90mm/100mm gun, the recce tank a 40mm gun, a version with anti tank missiles another with anti air defence, further still the tracked APC, command and control etc.
            We managed to do this many years ago with the Alvis family some are still in service with the British Army and other nations 50 years after they were put into production. With modern developments in armour gun and missile power etc we should be able to do it again. Oh I forgot to mention that the armoured personnel carriers for the heavy division should be based on the MBT tank hull of the main battle tank.

          • Depends heavily, extremely heavily on the Division, for Example A, US Army Infantry division 1942
            9x Infantry Battalions in 3 Regiments.
            3x 105mm Artillery Batteries.
            1x 155mm Artillery Battery.
            Supporting Units
            Example B, Italian Infantry Division 1942
            4x Infantry Battalions in 2 Regiments
            2x 75mm Artillery batteries
            Supporting units.
            Example C, German Motorised Division 1943
            6x Infantry Battalions in 3 Regiments
            3x 105mm Artillery Battalions
            1x 150mm Artillery Battalion
            1x Tank Destroyer Battalion
            1x Recce Battalion
            Supporting Units.
            Example D, British Armoured Division 1943
            4x Armoured Regiments in 2 Brigades
            6x Infantry Battalions in 3 Brigades
            3x 25lber Artillery Regiments
            1x Armoured Car Regiment
            Supporting Units.

            I could keep going, but there’s a huge amount of variation in size between divisions, basically, divisions could range from about 8,000men, to about 20,000 men.

        • ah yes lets use tanks to fight a sea battle because at the end of the day an island totally needs tanks to protect it self.

          • We need a good balance of all forces relying on just the Navy alone is complacent and assumes it cannot be defeated.

          • Correct Davey, as pre-emptive offensive action is all part of a well prepared defence. Any military that sits and takes it, with no effective plans or equipment for offensive action, and who gives the enemy the initiatve continuously will lose every single time.

          • Nate, yes we are an island, but I do remember reading I think it was Jackie Fisher who said the biggest weapon the Royal Navy has is the Army, they can throw it ashore anywhere in the world and the potential enemy would not know where the RN will strike.

          • Since we invented the tank it has never been used to actively defend the homeland – it has always been used on expeditionary operations.

        • Go Goggle a cost per unit of a NEW MBT, without support and suddenly you will realise that a New MBT is not practicle if we could afford 400 new we would be upgrading the entire Fleet of CH2s to 3s with Gold plated armour over an imported pile

    • I agree but that ship has sadly sailed and we lack funding for an armoured force of 400 tanks any more. That decision should have been made 20+ years ago.

    • Why? 400 Leopards would be way more expensive than upgrading an existing CR2 fleet, and wouldn’t give you much of a capability lift (plus you’d then have to factor in the cost of re-tuning your entire support structure to a completely new chassis).
      It’s the same argument as with getting the M4. Yes you could, but at this point the capability upgrade compared to simply upgrading the L85 is negligible, so you might as well save until the next big step change (eg 130mm) becomes available.

      • With the A2 and now A3 upgrades. The only issue with the L85 is it’s ergonomics, which can be overcome through repetitive training. The L85 has 100m more effective range than the M4 carbines. Plus the M4s only fire in bursts, whereas the L85 can go full auto. This isn’t so critical in the field, but when house clearing it’s a godsend.

        • Well, the M4 doesn’t only fire in bursts, there are plenty of versions that have fully automatic (including the C8’s used by the British Armed Forces, and the US Army’s M4A1), it’s really just a matter of removing the lower receiver and fitting one that has a fully automatic assembly.

          Also while I usually defend the L85’s ergonomics as being not nearly as bad as (usually accustomed to AR-15 layout) people complain, I also don’t think it’s accuracy is that much better than an M4, certainly I never noticed much difference between what I can hit when firing and M4/C8 and a L85.

          • Yes, I appreciate that the C8 and M4 comes in different flavors. But the standard US Army issue M4 only has a 3 round burst mode.

            Having used the L85A2, M4 and HK416 in combat. I can categorically state that the L85 is the most effective and accurate above 300m especially with the ACOG when compared to the M4 carbine and the HK with the 16” barrel that I used in Afghan. The HK I had was perfect for the mission I was on at the time.

          • But what the standard US Army variant comes in is about as relevant to the advantages an M4 would bring to the British Army as a comparison between cheese and a FAMAS.

            Cool, you’re anecdotal evidence says one thing, mine says another, and there are no official studies that have shown that the L85 is any more accurate than an M4. You sure you zeroed your M4 properly?

          • Yes absolutely. The M4 had the 16” barrel just like the HK’s. The A2 has a 20” barrel. The extra 4” makes all the difference for 5.56mm distance shooting due to a combination of increased muzzle velocity, the bullet’s ballistic coefficient and the additional rifling twist. I’d still say that up to 300m the L85 will produce a tighter grouping, but the other two rifles will be close. From 300m the longer barrel of the L85 helps its accuracy to 400m. Much further and the bullets is affected more by external factors and will wander from the aim point. The old LSW with the 25” barrel could be effective up to 600m in single shot, but it’s group size was about 10cm.

          • I’ve heard this one sooo many times, and have never seen an empirical study (ie someone fixing both an M4 and an L85 in place to take the shooter out of the equation and running a repeatable test, and documenting it) to back it up, just anecdotal evidence. At any rate, current US ammunition is designed to take advantage of the shorter M4 barrel, so I suspect you’ll see that the L85’s often touted accuracy advantage has decreased in recent years.

          • Me to, my lot only had access to Canadian, French and UK ammo. From my experiences on the range and in conflict. I found the L85 to be more accurate. It may be that I’ve used it more than the others, so my muscle memory and cognitive thoughts are harmonized with it. I would still pick the HK over it though for ergonomics.

  7. Maybe it is a worthwhile upgrade, but with only 148 tanks? This just confrims that we are not seeriously expecting to go against a neer peer enemy as we would be massively outnumbered. Maybe spend the money on more medium tanks/troop tranport and artillery ( we are short of all this kit.) Maybe having a small poorly equipped Army it will result in a lack of future miltary “adventures” in foreign countries, which would be a good thing.

    • It’s sufficient for two Brigades of Armour with 50 tanks each. One at readiness to deploy at short notice and one at lower readiness, training etc.

      The rest will be Bovington / Canada training assets with the balance in maintenance.

      As the technology content rises, frequent counter obsolescence upgrades and updates will become the norm, so a good number of Chally3 will probably be ‘under maintenance’ at any one time.

      What conclusion can you draw from the above ?

      I would conclude we will only provide a single reinforced brigade (robbing tanks and combat ready personnel from the second for a reserve) of armour to any future confrontation, is 80 odd Chally 3 enough to make a ‘meaningful contribution’?

      Perhaps, with Brimstone Armed AH64E and Typhoon equipped with Spear3 forging ahead, then perhaps it is …..

      I hope we never have to find out….

      • We are only ever going to be a minority player in any main tank battles on the European front its just a fact of strategic and geographical life. The more we can add to the equation great but its never going to be the decisive factor in any European war.

        • Why focus on a European war. Since 1945 our tanks have been used many times on kinetic operations which were anywhere but Europe.

    • We would never go up against a near-peer enemy alone – we fight within coalitions of the willing, be they NATO or US-led or whatever.
      You advocate abandoning expeditionary operations, which, if anything, are more likely under the ‘Global Britain’ remit.

  8. I understand the program will cost £800 million. For that money the UK could buy 160 +/- brand new Merkava IV tanks.
    I am utterly convinced that the benefits to the overall UK economy and industrial base should be the critical factor in Defence spending decisions.
    For instance, I would have supported the selection on BAE’s CV90, built at Newcastle rather than the American/Spanish/EU Ajax.
    But in this case it may be that the operational advantages and probability of use swings the decision for Merkava.

    • BAE stated right at the beginning of the Warrior upgrade that it would need a new turret. Funny that as they built and are the design authority for the vehicle. However, BAe have used the MoD as a cash cow for years, which is why they probably lost out to LM.

      I have been to Israel to see Merkava 3 and 4s. I really liked what I saw and talking to the crews they were really confident that the tank could match or better any of their neighbors tanks. The chassis though is quite dated as is the armour layout. Though it’s still very effective against 2 stage ATGMs. It’s the Trophy APS system that puts it in a different league. The tank’s design with the engine up front and the rear compartment and clamshell door was driven by the predominant type of urban fighting that Israel found itself in.

      I had a chat with a Commander whose tank was targeted by a Kornet ATGM fired from the West Bank across the border. The Trophy’s radar detected and tracked the missile almost as it left the launcher. He said it was the weirdest feeling waiting for the missile to get within range before the countermeasure was fired, which then shredded the missile. He said it was the longest 3 to 5 seconds of his life. The Merkava 4 that he was in automatically turned the turret towards the launch point, where the gunner reported seeing some “hostiles” reloading the weapon. He ordered return fire with HE and end-ex.

      • DB. Would the Trophy system be able to deal with the type of anti-tank munitions that recently annilated Armenian armour?

        • Yes technically. The Trophy system is designed to counter side, diving and top attacks.

          The Turkish supplied TB2 UAVs launched guided weapons at their targets, whilst the Israeli supplied Harop suicide drones are built for surveillance but are also packed with explosive, which then dived on to the target.

          Anti-tank guided missiles (ATGMs) are pretty fragile, so even if they’re ground or air launched, these missiles are susceptible to the impact of the Trophy’s tungsten cubes. The nose of these missile can contain optical/IR sensors along with an impact fuse. The cubes can shred these items making the missile inert. Generally with the combination of closure speeds, the tungsten’s mass and sharpness the missile’s body will be heavily compromised and suffer structural failure.

          The issue will be laser guided bombs, the actual bomb’s skin is pretty thick, as they’re designed for fragmentation, so it is unlikely the Trophy can damage them. However, the bomb’s laser sensor and aerodynamic controls will be. There’s a fair chance Trophy could do enough damage to these to cause it to miss.

          The Harop suicide drone is basically a scaled up model aircraft. It’s made from a combination of fiberglass and thin aluminum alloy. It would be very susceptible to the Trophy’s tungsten cubes.

          The main issue is that Trophy’s countermeasure is basically a Claymore mine, substituting the ball bearings for fragmentary tungsten to produce sharp sided cubes. This is a short range device, as soon as it’s fired the tungsten will disperse much like a shotgun’s cloud of pellets, making it less effective over range.

          If the Troohy defeats the guidance sensors and fuse of the guided weapon. The inert weapon will travel on a ballistic path. The tank’s armour should protect it against an ATGM, against an inert 500lbs or greater bomb, who knows? But at least there’s a chance.

          • ” The chassis though is quite dated as is the armour layout. “

            Merkava chassis have always been new at V3 and V4 number variant. I can’t imagine how you say the armour layout is dated when V4 it is the only tank in West with a good top attack armour layout.
            

          • From my perspective tanks that use a form of Horstman, Christie or torsion bar are all old hat, when compared to an active hydro-pneumatic one. There are several reasons for this. The active suspension is bolted to the outside of the tank’s chassis, thereby making it easy to maintain but also repair when damaged. When a tank that uses torsion bars is damaged by a large IED. The bars buckle and twist. This means you won’t be able to pull them out to replace, but have to cut them into manageable sections. This invariably means the turret has to be removed, likewise the engine and gearbox. Thus delaying when the tank can returned to service. The active suspension can also give you extra gun elevation and depression from the angling of the tank’s chassis. Have a look at the angles the Korean K2 Black Panther tanks can achieve?

            The Merkava uses a form of modular armour. It is arranged in horizontal layers. This offers very good armour depth. But again it’s not designed to be easily fixed in the field. Challenger in this respect is better. As the modular armour is arranged in boxes. This means a REME field team can replace them on the field and the tank can be returned to service quicker.

            The Challenger was designed to fight on the European plains. Initially to blunt a Warsaw Pact offensive then to turn the tide and push them back to their borders. This would involve large distances from a depot. So the tank was specifically designed to be repaired in the field. The Merkava were designed to operate in and around urban areas, but also to contain “Arab” invasions. Therefore, it would primarily be acting defensively. This is part of the reason for the rear compartment door. As it allows the crew to escape whilst under fire. Thereby making sure they can fight another day. So in theory the tank will be operating in and around the borders of Israel so relatively close to a depot. When they were sent into Lebanon to attack Hamas, the majority of the damaged tanks returned to Israel on a low loader.

            I agree, Merkava includes ERA mounted on the turret roof. This was to protect it from RPG attacks when in an urban areas. Trophy was specifically designed for top attack protection. I have yet to see a Western tank with ERA fitted like this.

            The next iteration of Merkava may include a better laid out modular armour package, that allows it to be repaired in the field. The active suspension would also help it in an urban conflict.

          • I am sorry DaveB but you just don’t know or are making a confusion with another tank.

            Merkava – no model use torsion bars but springs, it is all in exterior precisely to be easily repaired in field.
            The last version have more than 600mm travel.
            You can just look at side of Merkava photo or a model and look at its suspension and why it was made that way.

            Merkava – was the first tank to have modular armour to be easily replaced in field (version III), the modules are much easier to replace than Challenger armour.
            Put in Google “Merkava III modular armour”

            Merkava – the rear compartment was made to use the engine in front as armour, as an additional space/obstacle to increase crew survival in case of a hit from the front.

            It is unknown what type of armour is in the top of Merkava IV.

          • Yes I know what type of suspension a Merkava has. As it uses a form of Horstman suspension. The issue is that it is a passive reaction suspension.

            The tank’s forward engine placement was designed for additional frontal armour protection. The space in the rear used to house extra ammunition, supplies and a few troops. But the whole design was for crew safety. Rather than bailing out of tank through the turret hatches, the rear door means you bail whilst under cover. Like I said the tank is primarily designed to fight in and around urban areas.

            I know the Merkava 3 started with fixed appliqué armour then moved to modular armour. The Merkava 4 built on this. However. Unlike the Challenger it is a lot harder to replace in the field.

          • In anterior post there was excuse of confusion, Now there isn’t.
            Merkava was build to fight mostly soviet tanks under Arab countries at long range.

          • DB. Thank you for your excellent, informed post. It sounds as if tanks therefore still do have a future and the need to improve anti air defences and catch up on decades of negelect is imperative.

  9. By the time the tank is in service it would only have a short service life, if we actively join the new Euro tank project these could be delivered in a similar time scale with 130 mm gun. ABRO only delivered 20 hulls a year with good management!

    • Oh god no, please not another nightmare European project, it will be hugely expensive, with only 400 odd MBT’s produced…

      Refurbished and fully upgraded M1A1’s will be ‘widely’ available by then in quantity, a fraction of the price and far cheaper to support and deploy.

      The Poles have the right idea!

        • Poor survivability Graham, really, I would find that odd, considering the Americans have been using it for 35 years and still regularly upgrade and refurbish it, with no current plans to replace it either.

          The fuel issue is a problem, granted, but you can buy a lot of diesel for the billions we throw into a euro tank nightmare sized hole…

          The numbers just don’t add up regarding a new European MBT, especially with Europe’s number No1 Tank country Poland, not being interested.

          We would be looking at making about 600 tanks, factor in the tortured European development costs and you end up with a very expensive and very late tank….

          Now, with Chally 3, we have a chance to overspend and time overrun and cancel our very own tank project….

          • Poland hasn’t said it’s not interested in MGCS, in fact recently they re-affirmed that they are interested (although Germany and France want to develop it just between themselves, probably to keep it becoming a complicated black hole). But it isn’t expected until the mid-2030’s which is a long time to keep T-72s in service if you are Poland.

            At any rate, the UK, assuming we are giving up on our own native Tank industry (seeing as the CR3 is being made by Rheinmetal), probably has the best deal, being an observer and then buying MGCS off the shelf, instead of sinking a lot of money into its development.

            By then the Leopards, Leclercs, Ariete’s and Challengers across Europe will need replacing anyway, so the market will be for well over 1,000 new built tanks.

      • ? Germany has produced nearly 4,000 Leopards, as long as they’re as successful at marketing a new 130mm tank, and there is no reason they shouldn’t be, 300 is a very, very low ball number.

        What’s the point of getting M1’s, they’re no better than Leo or Chally, it’s only an incremental step up, (Remember Poland is buying M1A2’s to replace their PT-91s (Which are to all intents and purposes T-72s) so their M1 and Leopard purchases are a significant upgrade for them).

        Rather than completely change chasses and incur lots of additional expense, better to spend less on an incremental upgrade and then buy whatever the next step is (I suspect 130mm coming out of Germany).

        • Hi Dern,

          Germany has produced a lot of MBT’s, absolutely.

          Here’s the problem, technology is rapidly overtaking the MBT, I suspect by 2030 the writing will be on the wall, systems like Spear3 and their even more capable successors, will render them very much a supporting asset, trundling along behind the missile and drone strikes to occupy ground and support infantry.

          The days of large set piece tank battles, so beloved by Cold War planners, are soon to be a thing of the past.

          If MBT’s survive past 2040 (and that’s a big if), they will be a niche capability, so yesterdays bananza tank orders will be a thing of the past.

          The future euro tank, if it happens, will be expensive and find a small domestic and international market.

          The real future will be in lighter air mobile combat vehicles, with relevant and changeable weapon systems.

          As basic as they were, the highly successful anti armour missions undertaken by drones in Azerbaijan, shows just how vulnerable MBT’s have become in the 21 at century.

          Weapons like Spear3 when fielded in quantity will be a game changer, capable of crippling an entire armoured division.

          Consider, Typhoon could carry 16 in a maximum load out, a flight of 12 aircraft approaching from all points of the compass and releasing their weapons from many miles away, will absolutely decimate enemy armour, local air defence systems will stop a handful, but the majority will find their way to their targets and kill with a very high probability.

          • See, I’d agree with this, if it wasn’t for the fact that it was something that has been predicted off and on since the 1920’s by various parties. First it was man portable AT Rifles, then it was Airpower, then it was ATGM’s, now it’s drones.

            Sure in Azerbaijan drones where instrumental, just like in Chechnya infantry was, but in Donbass the Russians (sorry I of course mean Independent Donbass Army) and Ukrainian’s are still using MBT’s to great effect.

            IMO the lesson from Azerbaijan-Armenia is nothing new: Tanks on their own have been vulnerable since 1917, they need the full spectrum of support.

            So, no I don’t think large tank fleets are a thing of the past by any means.

            *EDIT* If tanks are vulnerable btw, lighter air mobile vehicles will be too, (the trend in recent years has been for supporting vehicles to become larger and heavier anyway). The only real advantage of airmobile vehicles is that they are cheaper and quicker to deploy on expeditionary interventions such as Mali, Afghan etc.

          • You make a fair point regarding false predictions of the demise of the tank in the past Dern, but today systems like Spear3 will absolutely be the harbingers of doom for massed armour attacks.

            They will simply see a mass of targets, interpreted by their sensors and AI led algorithms, de-conflicting from each other, looking for key targets, ignoring 4×4’s and low value targets and wiping out MPT’s and artillery.

            Spear 3 will be here tomorrow, the next generation from 2035 will be even more effective.

            We have come a very long way since the boys anti tank rifle Dern.

            I’m not saying tanks will disappear, they will evolve, from 60 ton monsters, to much lighter, stealthy air mobile ‘systems’ , capable of being equipped with weapons suitable for the task at hand and be deployed to hold ground in support of infantry.

            The problem, as I see it, is that some in the defence establishment have classic Kursk type tank battles, hard wired into their DNA and just can’t let the MBT go.

            It’s fighting yesterdays wars and massed tank battles really are a thing of the past, particularly against a first world, tier one country.

            They will be destroyed on mass….

            For that reason I can see Chally 3, as a last of the line, British battlefield monster, two Brigades worth of heavy metal, until General Melchett gets the idea of the MBT out of his system and finally let’s it go…

            I might well be wrong, I will bet however by 2030, MBT’s are on the way out and future projects cancelled.

          • We’ve come a long way from the Boys anti-Tank rifle, MBT design has come a long way since the A9 Cruiser. It’s been an arms race since day 1 is my point.

            Of course Tanks operating alone against an enemy equipped with Spear 3 are going to be vulnerable, just as Tanks operating alone are vulnerable against Brimstone, or A-10, or man-portable ATGM’s. That’s kind of my point, MBT vulnerability to Air and Infantry attack is nothing new, that’s why they have to feature in a combined arms approach.

            In the case of Spear that means you need to pair your tanks with SAM and Aircover (which is nothing new, that’s been a fact since the 1940’s), and force the enemy to fight for the information they need to target the MBT in the first place. It doesn’t mean that there is no place for a heavily armoured vehicle equipped with a large cannon, and tracked for mobility.

          • Morning Dern, let’s step back and instead of an extreme 12 Typhoon, max loaded with 16 Spear3, to a realistic and totally doable ( in a few years) 8 F35b, with 8 Spear3 in clean stealth mode.

            Your hypothetical air defence system will be totally unaware of the F35’s as they break formation 250 miles away, encircling your armoured division.

            At approximately 50 miles each aircraft will release 8 Spear3, you now have 96 missiles winging their way in.

            Your air defences will more than likely only become aware of the missiles as they pop up to scan for targets …. It’s too late to react and only a small number of missiles will be intercepted.

            Let’s say 70 make it to their targets, the extremely high probability of a hit will mean that at least 60 will hit high value targets, MBT’s artillery etc.

            So, 8 aircraft have caused enough damage in a single strike to severely compromise a whole armoured division….

            Now, add a second wave of 8 F35’s and not forgotting the EW variant of Spear3 and a mere 16 aircraft, in two strikes, with a very high probability of all returning safely to base, will have left an entire armoured division in a smoking pile of scrap…..

            This is today’s technology, fielded tomorrow.

            Factor in advances in missile technology and and your MBT becomes little more than a lumbering coffin for its crew post 2030.

            That’s my take on it anyway……

            MBT’s aren’t dead ‘yet’, but like Battleships before them, they are on the way out……

  10. Silly afternoon thought, seeing tank painted with UK flag made me think of tank biathlon (spelling correct?), never happen but would be fun to have a team from the UK join

  11. Good news, but as everyone here is saying we could do with more than 148, so that we have some reserves.

    So we originally had 386 Challenger 2s, reduced to 227 what happened to the other 159 ? were they scrapped or stored?

    • There is a difference of opinion on the fate of the surplus C2’s,some say they are in Storage, some say they were Scrapped / RTP’d.

      • 40 were scrapped a few years ago, assume rest in Ashchurch in various states. Expensive to strip and cut them up, would be cheaper to dig a hole on Salisbury plain and concrete over the top

        • I suppose if Chally3 is starting from a completely stripped refurbished hull, they can crack on with 148 in store….

          They could be renovating the hulls now and back to store at Ashchurch until required for final assembly with the new components.

          They must have lots of spare power packs in store too, so they can crack on with upgrading and zero rating them, inhibit them, back to store and ready to reinstall down the road…

          Considering the small number, we must have enough in store to kick off the programme without touching the examples still in service.

          Or does that make too much sense for the MOD??

          • Honestly I’d love to see the remainder given to the Army Reserve, 2x Reserve units on CR2 and 2x Regular units on CR3 makes a lot of sense to me, especially since they do actually cost money to store.

            It would mean in the even of a major conflict the Army could surge to double it’s tank fleet if needed.

          • Makes sense Dern, but the future force structure will give us a pool of 100 frontline deployable MBT’s tops.

            The two active brigades will take turns at readiness, so in reality (unless it was a general war situation) we will probably deploy a single Brigade of 50.

            If the Americans really pushed us, we could mobilise a reinforced Brigade (using the combat ready crews) of the other Brigade and some of their Tanks to form a combat strength of 70, 80 at a push.

            When we moved down from 225 tanks and three Brigades, to 148 and two Brigades, MBT’s moved from a serious core capability, to a niche capability unfortunately…

          • True, and while I’d like to have 3 Armoured brigades, the fact is the Navy and Airforce “won” this defence review, playing into the perception that wars can be won by dropping bombs on people and ignoring the reality that in the end you need boots on the ground.

            But all the more reason to reform the Army Reserves, especially the Regular Reserve. A 100 full up Tank force in 2 Regular Brigades would be more palatable if you knew that number again was coming in 2 (albeit older) regiments of tanks manned by reserves.

  12. It’s stupid question time again.
    Could tanks be made out of carbon fibre?
    It’d save literally most of the weight of the tank and possibly make it stealthy if that’s even a thing that tanks need?
    Second stupid question is
    Why do tanks seem to have problems with engines when surely a decent heavy truck engine would be super reliable and do the job just as well?

    • What happens when you fire a Kinetic penetrator or a HEAT round at a block of carbon fibre ?…. there is probably a known reason why this material is not used as armour plating.

      My guess is that tank engines are engineered to be more resilient against use in tougher environments than truck engines.

    • vibration, shock loads, driving like hire cars ,intermittent use, OEM rebuild quality control and not warming up properly before use are some !

    • 1) carbon fibre is pretty brittle. and i can see your point about stealth in tanks. (maybe so the aircrafts can’t spot them and lock on their missiles?).

      2) wouldn’t be enough. current ch2 engine produces about 1200 bhp. a decently heavy truck engine produces about 600 bhp. the ch2 weighs 64 tons. now with its its current engine its 18.75 bhp per ton, with a truck engine its 9.375 bhp per ton which as you can see it half the amount of bhp’s.

      • Engine torque is the most important factor for a tank rather than outright horse power. The Perkins CV12 is a good engine but at 26.1L but the Leopard is 47.7L. As the saying goes there’s no replacement for cubes, or 3043 lbs ft vs 3500 lbs ft of torque. As the Leopard has the larger capacity engine the spread of torque will be over a wider area, whilst the smaller Perkins is over a narrower area. This means crucially the Leopard can accelerate faster. Therefore it can shoot and scoot from hide to hide faster. Even if the HAAIP program incorporates the Caterpillar common rail upgrade bringing the engine up to 1500hp. It will still accelerate slower.

    • I would suggest not. From past experience dealing with composite built aircraft that suffer small arms damage. Composites can be a blooming nightmare to repair compared to boring old Aluminium based alloys. Its really easy to patch over a hole with a plate that’s rivetted on. Whereas with a composite you have to cut out all the damaged area. Then “glue” in a new piece trying to blend the inner and outer surfaces. Then let it to set for at least 8 hours under a UV lamp. As a material carbon fibre and other composites do offer a weight saving benefit, but when it comes to battle damage repair they can be a major headache.

      The composite armour that makes up Dorchester, is rumoured to contain a fibre based composite, probably something like Kevlar. For its weight and equivalent depth, Kevlar can provide a better penetration performance than a cemented steel armour. However, unlike steel it cannot take repeated hits. It still pales into comparison compared to a ceramic for penetration performance, which again cannot take repeated hits.

      Steel is still the best material to use as a base armour, where modular armour is then added to. It is easy to repair and can take a lot of repeated hits before it fractures. The next gen MBTs will still use steel for the base armour for this very reason.

  13. When I was in uniform we used to get hit with numerous mags one of which was a MOD mag called Desider DE&S news. which reported what was happening across the MOD. They have a website
    https://des.mod.uk/desider-magazine/

    Where you can access the mag via the net (Scroll down to the bottom and the interactive webpage) if you go down to the bottom you have acess to older issues.

    Reason I mention this, is the above Chally 3 story was posted there a month ago.

  14. Tough one reducing the tanks to 148 crystal ball is always going to be opaque when planning future defence needs perhaps the need to deal in covert operation is the future battle tanks like it predecessor the horse is diminishing in need.

  15. shouldn’t we be focusing on air superiority. Doesn’t matter how many tanks the enemy has got with a few missiles you could stop a tank from advancing

  16. I just wonder if we should fuss about MBTs trouble is we don’t have the infrastructure and logistics to unilaterally get these great big beasts anywhere. Thoughts?

  17. Why will it take to 2030 for FOC for CR3? The tanks will need another upgrade in 9 years time. Industry is not trying hard enough.

  18. They should just upgrade them all and then put 50% of them in long term preserved storage if they cannot ”afford” to man them all. At least that way we have the ability to surge numbers in case of a conflict.

    The idea that we cannot ”afford” to rebuild them all is frankly a nonsense.

    • Yes indeed. Great that the upgrade is going ahead and it looks like a proper, thorough engineering upgrade.

      One big weak point on the Chally has been its underpowered engine, which limits speed and mobility. There were plans for a parallel development to replace the original Perkins CV-12 with a Caterpillar engine, increasing the bhp from 1,200 to 1,500, which would improve performance considerably, but that has suddenly gone quiet. Anyone know the score on this?

      Ref numbers, NATO needs to be able to field a heavy armoured corps to support the Polish army if push comes to shove. Germany can field an armoured infantry division in northern Germany, we are expected to match that and Netherlands/Belgium/ Denmark to contribute the third.

      It means that, whatever oddball conclusions the politicians arrived at in the Security and Defence reviee, we are short of an armoured infantry brigade. The plan was to backslide to 2 armoured and 2 lighter Strike brigades, but now the latter have vanished like a puff of smoke.

      We basically need 3 tank regts minimum for 3 Arm Inf Division, that is the absolute minimum. We also need a tank regt for Estonia, our one tank squadron there is too small to provide a deterrent or to do much in a conflict.

      4 regts @ 56 Challys = 224
      Tanks in Suffield and Bovington = 36
      25% war reserve = 52
      I reserve regt = 56
      Total needed = 368 – minimum.

      If we don’t have that number left after all the cuts and disposals, then the war reserve and reserve regiment will need to be treated as one, with reserve crews and tanks being used to fill the gaps, rather than the reserves operating as an additional regt.

      Double the cost of the Chally programme and it’s still not a lot more than ONE of these £1bn+ Astutes, T26s and T45 successors. As none of the latter are of much relevance to a land war, the interests of the nation’s defence would be far better served by maintaining a credible land force.

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