Earlier this week the Senate Estimates Foreign Affairs Defence & Trade Committee heard from CN VADM Noonan that between three and six Collins class will be upgraded to avoid any capability gap prior to the Attack class entering service in the mid-30s.
Collins-class submarine fleet to be kept at sea longer, navy chief says. Australian Financial Review 20 Feb 2019.
(Apologies, Unable to save to file or provide a link - nada subscription)
Of interest, regarding the Pacific support ship, Secretary of Defence Moriarty said the construction of the new naval vessel that is intended to provide a semi-permanent presence to help south-west Pacific Islands has forced other defence projects to be delayed.
Officials told Senate estimates plans for the build were still in the early stages with decisions yet to be made on size and capability, although it was expected to be lightly armoured and “won't need to be a particularly sophisticated vessel.”
The PM and Christopher Pyne previously advised the ship would be a "large-hulled" naval vessel to help with humanitarian and disaster relief missions. (That was when we all became excited at the prospect of a third LHD)
So, it appears the RAN will be obliged to operate a large-hulled, lightly-armoured (armed) and unsophisticated vessel in the Pacific, on a semi-permanent basis while other planned projects are probably bumped a bit to the right.
It would’ve been sort of okay if the the Defence budget was increased to crew and operate the vessel (or if were funded by the Foreign Affairs Dept).
It is always good to see the RAN increase in size and capability, but until the design of this new unit is announced and we learn just what other projects are being bumped to facilitate it, I remain somewhat apprehensive.