In terms of the ANZAC Frigate upgrades, whilst the defence white paper deliberately doesn't offer any specific details and costs, we can get a general idea by looking at the
2008 LTDP. The variation in the cost range (thus capability) there is quite wide, from $287-850 million.
Details are lacking in terms of what these costs are exactly for, but you can get some general ideas by following the RAN thread here and visiting the Australian DMO website's
SEA projects.
In terms of what this (NZ) Govt will approve for the ANZAC upgrades is still unknown at this stage (of course they would know) but the language in the defence
white paper appears somewhat positive.
5.60 It will also see a significant investment made to ensure that the ANZAC frigates continue to provide a valued contribution to coalition operations.
See also:
5.47 This force structure will see the ANZAC frigates given a self-defence upgrade to address obsolescence and to improve their defensive capability against contemporary air and surface threats. The two frigates will be replaced at end of life (projected at around 2030), taking account of the wider range of naval combat options then expected to be available.
5.48 Naval helicopters will continue to provide extended reach, surveillance, and airdelivered weapon capabilities (air-to-surface missile and anti-submarine torpedo) for the frigates. A review will determine whether it is more cost-effective to upgrade or replace the existing Seasprite helicopters when they are due for an upgrade in the middle of this decade.
Presumably obsolescence could be referring to the Nato Sea Sparrow and survellience systems. If so there's some exciting possibilities there, especially as the Govt understands the need for networked systems for coalition interoperability etc.
In terms of the Seasprites I take it you're also at the WoNZ site and would have seen the rumours there of NZ acquiring some of the ex-RAN Seasprites (what another 2 or 3, presumably with the advanced avionics removed?), whilst I agree the RNZN needs more ship board helos to deploy on its 5 helo capable vessels (supposedly 3 out 6 Seasprites needed to be available at all times, and that was prior to the Project Protector commissioning etc), although the defence white paper makes no specific mention, so we'll just have to see whether that pans out to anything especially as the govt is open to the possibility of replacing them from around 2015 onwards.
In terms of the OPV/IPV upgrades see the RNZN website and
strategic maps as at 2008. However I understand from a Defence source that future issues and planning etc, was being reassesed meaning that the updates to the strategic plan and maps are on hold in terms of release to the public. Presumably (my guestimate) now the defence white paper has been released we'll see the updated plan in the next year or so, hopefully with more detail on the replacement vessels being proposed as well etc.