Would it be feasible to have the Oto Melara gun for the Canberra class ships ?, Fitted to the bow and stern it could provide a defence against even subsonic missiles ,there is also a range of ammunitions that could be fired from it supplying further options .
Which OTO Melara gun are you referring to? The 76 mm/62 cal. one? If so, I seriously doubt it since a gun that size is not something that is easily retro-fitted, not to mention that there would be some definite fire arc issues.
Phase it in over time, the Hunters will have 30mm AFAIK. (wonder if they will use the dsm30 mount?)
When the AWD's come in for refit do them up. LHD as well.
Probably leave the ANZACs and all the others. Apparently there is a kit like upgrade for existing mounts. So it isn't really expensive or a burden. 80% of parts or something are the same. Training etc would basically be the same.
One of the key advantages is a mount that has greater elevation, better able to take out things like drones etc.
I wonder if with more top weight becoming available and larger ships, if Goalkeeper CIWS might make a comeback too.
I seriously doubt Goalkeeper would ever enter RAN service, since it is a deck penetrating gun, unlike the Phalanx. This means that the RAN cannot operate a pool of Goalkeeper CIWS like can be done with the Phalanx.
Me being me, I do think that the RAN is going in the wrong direction to a degree by looking to have so many different calibre guns in service. IMO the RAN would be better served by adopting a single mounting/small calibre gun to be fitted to new vessels planned for RAN service. I had posted about this somewhere previously within this thread, but as of right now, the RAN operates three different types and sizes of small calibre gun, each with their own type of mounting. Once the
Arafura-class OPV and
Hunter-class FFG enter service, that number will increase to at least four, and more likely five.
That in turn means at least four different lines of munitions, as well as four different supply chains to maintain the mountings and guns. There will also be at least four different training qualifications in order to operate and/or maintain the guns. For instance, someone qualified for a RAN posting operating or maintaining the 40 mm gun/mounting which is to be fitted aboard
Arafura-class OPV's could not be reassigned to a
Hunter-class FFG or
Hobart-class DDG to operate/maintain the small calibre guns on those vessels, unless the person was already cross-trained to support the different small guns.
From my perspective, it would be better to simply the training, logistics and support streams by standardizing across the fleet, at least for the planned new construction. Especially since there are gun options available which can be effective across a greater range (pun intended) of targets.