ESSM requires far more 'real estate' in terms of the footprint of the VLS but also in terms of radar, combat system and fire control supporting capabilities, including Continuous Wave Illuminating Transmitters and so on.Since the topic of Canberra's layered defence is popping up I'll put it out there, What would theoretically (within the realm of reality, ie: it can actually be fitted and we are likely to use it) be the best layered defence for the ship's them selves?
So far they have the 4 x Rafael Typhoon 25 mm remote weapons systems but may soon have upto 3 x Phalanx's, Are the complementing them or replacing them (In part of in full)?
The Phalanx and 25mm Typhoon mounts appear to me as more close in weapons so I'm stumped if I can work out why you would need both so if any one can help out there be much appreciated.
SeaRAM tends to be the medium range system while ESSM-ER tends to be the long range system (In regards to this vessel, I don't think any one in there right mind would be wanting to fit RIM-174 to the LHD's).
I'd imagine ESSM would come before SeaRAM purely cause we actually have history with those systems, we have (or will have) spare launcher's and such a move would create more jobs (Ceafar) for Australia.
Regards, vonnoobie.
Such is going to be a much larger imposition onto the ship than a standalone system like SeaRAM Block II would be, albeit in exchange for more capability.
I guess the issue is, is ESSM too much capability and expense for what is intended as a self defence capability and given it will always be escorted on operations by better armed and dedicated warships, is a purely self-defence system good enough?
I personally think a mix of Typhoon, Phalanx and RAM / SeaRAM is more than enough for us in the near term in an escorted environment as that is how most Western Amphibs are operated.
Longer term perhaps something like CAMM that doesn't require the fire control support that ESSM does, might be an option if the space is available to include a VLS, but I think ESSM is too much for the Canberra Class and diverts too much from it's primary role.