I think its more natural a Mu90 or mk54.
Ghostshark is only about 12m long, and a mk48 is about 6m and weighs over 1.5t. The physics of launching a munition like that from such a small platform are significant.
I don't think they are in any rush to arms these. These are more useful as sensor platforms. Munitions can be called in from anywhere, particularly from aviation platforms, which are fairly immune to sub threats.
I don’t think these are using any form of legacy munition actually and if you listen to what defence is actually saying, strike from these actual platforms (not as an enabler but as a shooter) is coming from day dot.
Nowhere, has anyone said that strike from these craft is limited to maritime strike delivered by a legacy torpedo design. I can well imagine these sitting in a littoral environment, deploying Anduril sourced, lattice AI enabled cruise missiles or loitering munition designs.
Such is routinely aluded to without being spoken outright...
Given what we have seen in recent years with ADF “strike” missile / guided weapon purchases:
ARMY:
GMLRS
GMLRS-ER
ATACMS
PrSM
SPIKE-LR
JAVELIN -F
Switchblade 300 Block 20
AIM-9X Block II
AMRAAM C7/8
RAAF:
SDB 1
SDB II
JSM
JASSM-ER
LRASM
HARM-B
AARGM
AARGM-ER
AIM-120D3
AIM-9X Block II
RAN:
ESSM Block II
SM-2 Block IIIC
SM-6 Block IA (“maybe Block IB as well)
NSM
Tactical Tomahawk
The old paradigm of “limiting” the number and types of guided weapon systems in ADF service to reduce sustainment, training and logistical costs seems to have gone out the window.
There are also more on the way that we are aware of:
NSM / more PRsM for Army’s land based maritime strike capability.
A Hellfire replacement / addition for Army / RAN helicopters.
Short range guided munitions for land forces.
An armed aerial drone capability for at least Army but quite possibly RAN as well.
Hypersonic cruise missile for RAAF (HACM initially) and likely a similar weapon for RAN in years to come.
Accordingly, the outlier in such a program at present is the RAN which with the exception of Tomahawk and SM-6 has basically only opted for “like for like” replacement of weapon systems - at least in the unclassified world.
Seeing naval “strike” being added to by autonomous systems with a mix of new generation cruise and loitering weapons? Seems to be just what “the Dr“ ordered in this day and age…