At the risk of being unpopular, I think Hugh has a point, if not necessarily for the right reasons.
My main contention with heavier vehicles is interoperability and suitability on a modern battlefield.
Interoperability with existing platforms and strategies:
The ADF is shifting its focus to an expeditionary type operational outlook. LHDs and the "like brigade" concepts feed into the ability to deploy more agile forces as capability bricks, tailored for a specific mission profile and sustainable within organic structures without so much "chop and change". This was a major issue in campaign design for SLIPPER and resulted in some serious problems with the RTS model.
Looking at the existing platforms for the expeditionary campaign, the LHD and the Choules are not inherently suited to deployment of a heavy force. Before you folks highlight the lift capacity, let me explain.
The LHDs have got a tank deck and a light vehicle deck, with the intent that the heavy deck carries tanks and the light deck carries everything else. With LAND121, some of the logistic platforms are already on the heavy end of the scale, thus will impinge on the heavy deck. If we throw in additional heavier combat vehicles, our ability to deploy a balanced force with the appropriate follow on support will be inhibited. Sea basing as is our proposed sustainment concept will alleviate this to some extent, but not enough. Heavier combat vehicles will require heavier support platforms, e.g. Recovery platforms, higher fuel requirements, etc. given we are already facing anticipated issues of sustaining the existing forces when deployed, a even higher logistic liability will only further stress the issue. Before anyone talks about having the Choules and the second LHD, allow me to explore these. The Choules is not conceived for deploying into an environment of threat. That's why she has no fitted armament (though she is capable). It has almost no self defense capability against maritime threats. As for the ADELAIDE, let me point out that a) the RAN concept of RTS means only one LHD will be operationally deployed to war at a time, and b) the gov't is exploring the concept of using her as a a/c carrier with the F35 B. The necessary conversions required if this goes ahead will all but eliminate her lift capacity for heavy forces.
Then we got the deployability problem - how do we get the platforms into the theatre. Apart from sea lift, C-17 is the only real viaible option. I only need to point to force insertion/extraction from MEAO to demonstrate the problem involved with heavier vehicles. You fellows have any idea how hard it was to just get the ASLAVs out in a reasonable time frame?
Modern battlefield:
There is no recent experience that necessarily demonstrated heavier is better. Rather superior mobility, detection threshold and design were what improved our survivability. What the MEAO has shown us was that when faced with a heavier, better protected threat, insurgents just became more innovative. What allowed us to get inside their operational decision cycle was our greater ability in adaptation. This is bolstered with more mobile platforms with greater situational awareness. There is no reason to believe a conventional force would not do the same thing if they face the ADF/coalition. Thus agility, sensors and tactics are what will give us greatest advantage in this aspect.
Against an adversary with technological parity, armour will not save us. Ask a tank crew their survivability against a gunship or a modern anti-armour weapon with a top down attack. The best tactic is usually range overmatch, greater sensor capability so they can kill the threat first, or the mobility to move their vehicle into cover.
It is for these reasons that I think Hugh has hit the nail on the head. Economic realities are important, but for military professionals, we need to consider tactics.
The Land 400 project office has done some analysis of vehicle loads on LHD and Choules. Figures for LHD light vehicle/upper deck:
30 x Land 121 Ph 3B heavy 8x8 trucks
18 x Land 121 Ph 3A G-Wagon 6x6
25 x Land 121 Ph 3B medium 6x6 trucks
Plus hangar with 12 x MRH90
LHD heavy vehicle/lower deck:
26 x CRV
13 x MBT (incl 4 pre-loaded into LCM-1E parked in well dock)
For the vehicle deck on Choules indicative vehicle loads are:
53 x CRV (by volume)
35 x CRV (by weight)
or
42 x IFV (by volume)
29 x IFV (by weight)
These are significant numbers and far greater than Army has ever been able to deploy from the sea. Both ship types pack in a lot of AFV capability.
I for one don't understand Hugh White's rationale. How are heavier AFVs a waste of resources? What does he define as light? As protection level is the key weight driver in AFV design, is he/yourself suggesting that Bushmaster or ASLAV for instance are adequately protected for Army going forward? They are certainly light. Hope though the enemy doesn't own a 50 cal or RPG.
In terms of volume, the indicative CRV is likely to be about 1m longer and 200mm wider than ASLAV and twice the weight (i.e far greater protection). As the LHD/Choules load out figures show, those increases are hardly a deal breaker.
The reality is that Land 400 has no real option other than to acquire heavier vehicles as all candidate CRV platforms are 24 tonnes GVM and above, some as much as 33 tonnes. IFV candidates heavier again. They are heavier than previous vehicle generations for a reason: customer requirements based on operational experience/observations.
Whilst it is true that the candidate CRV solutions will not enjoy the amphibious capability of ASLAV they are all significantly more survivable and lethal. As for mobility, the CRV (very likely to be wheeled 8x8) will go anywhere the ASLAV can go now; the tracked IFV, at likely close to three times the GVM of ASLAV, will access and traverse terrain that will stop an ASLAV.
As for Choules, the UK RFA may not have had deploying her into harm's way in mind, but if she is to support LHD as part of the Australian ARG then she will certainly be in an environment which could very easily be contested by a state adversary. (And don't get me started on Choules having no armament!!!)
This type of vacuous argument by Hugh White and others is not unexpected. He has been a consistent opponent of Abrams, LHD and the acquisition of close combat capability for Army for near on a decade.
It's is clearly justifiable, according to White et al, for our northern neighbours to up armour and acquire heavy IFV and MBT capabilities (Indonesia, Singapore, Thailand, Malaysia, South Korea, Japan) but clearly inappropriate for the ADF. Almost like he doesn't want us to win.