Much of the discussion around a hypothetical carrier buy for the RAN is based around the ability/desire of the Govt to fund.
Based upon my really simple calcs the funding of Defence currently looks like this (all in 2010 $):
- $25b base with 3.0% real funding increases out to 2018
- 2010 $25b
- 2040 $32b
- 30 year period $926b
If we were to maintain defence spending at 2.0% of GDP, Defence funding might look as follows:
- Maintaining 2.0% of GDP
- 2010 $25b
- 2040 $60b
- 30 year period $1,214b
- Additional $288b over current funding
Australia might be forced to increase Defence spending as a result of the changing strategic position in the Asia/Pacific region arising from the below and creating a 3 or 4 multi polar power environment:
- Declining US spending (given their budget position it has to decline)
- China fielding submarines and maybe carriers, as well as potentiall building bases in Timor and Fiji to complement their facilities in Pakistan
- A rising India competing with China
- Russia getting itself in order, Japan getting scared, a non-aligned movement?
Increased budget spending could see:
- Increasing to 2.5% of GDP
- 2010 $25b
- 2040 $75b
- 30 year period $1,518b
- Additional $592b over current funding
or
- Increasing to 3.0% of GDP
- 2010 $25b
- 2040 $90b
- 30 year period $1,821b
- Additional $896b over current funding (almost doubling current spending)
Obviously these figures do not take into account the fact that the cost of defence rises faster than inflation or that the Australian economy might not average 3% growth pa over the 30 year period. However all three numbers are affordable (though not necessarily without some strain).
Given that that based upon current funding shortfalls, Defence would need to just maintain 2% of GDP funding for the current white paper, what are the possibilities if Defence were to be funded beyond this?
Carriers would certainly be a possibility.
All of this is a long way off, I can't see a dignificant decline in USN projection capability. There maybe a very strong case that the replacement of the Camberra's should be more multi role and fixed wing capable. However as the current ships have not even joined the fleet probably a bit premature.