My 2 cents
- Building a Collins II depends on how different the boat is. If they build it to the same level as what we are upgrading the current boats to then there is no difference, They will still have the exact same systems, If they build it with systems intended for the Shortfin then it gives us earlier experience and a solid training asset for our future submarines, If they use systems that are neither present in the Collins or shortfin then it is a waste of time and money.
- Shifting production of the Frigates to Perth would be a mistake, We have the demand for one major and one minor yard, There would be a cost premium to do so.
- Lowering production of the Shortfin down to 12 months would also be a mistake, Optimal life span of a conventional submarine (and surface ship) is 18 - 21 years. Current plans call for a 24 month build cycle though Naval Group says that can be lowered to 18 months, At 18 months the life cycle is 18 years (with continuous production). At 12 months you either end up with a submarine building gap or early replacement of a submarine two thirds that way through it's minimum optimal life.
My view is we should build 3+ Collins II fitted with the systems we plan to incorporate into our current boats, Lower production time of the Shortfin to 18 months and keep production of all major combatants in the one yard.
Could Australia build a small batch of "Collins II" subs? The answer is, "yes."
However, if one is being realistic and instead asked if Australia would or should launch such a project, the answer IMO would instead be, "no."
One of the very first things people need to remember is that the notional "Collins II" is not an actual sub or completed sub design, at least not yet. What that means if that if Gov't were to decide today to initiate a new SEA project to get an interim sub in service prior to the shortfin Barracuda, is that a set of specifics would need to be decided upon by Gov't, the ADF, the RAN, and other relevant bodies.
Basically the type of information that was found in the RFI or RFP's which led to the proposals back from the industry which led to DCNS getting selected to design a version of the shortfin Barracuda... It would take time for Gov't to decide what information would need to go into an RFP in order for designers to finish the Collins II, so that Gov't could decide on whether a contract could/should/would be signed to start construction. All of that needs to be completed before a contract could be signed, which in turn needs to happen either on or before a workforce is assembled, and certainly before steel could be cut and parts/systems ordered for any Collins II.
To provide some perspective on the time it takes, DCNS was selected as the preferred bidder for the
Collins-class sub replacements in April, 2016. It is now over 18 months later and there has been no announcement of a contract being signed to start construction, or of the design having been finalized and accepted.
At this point, if an interim sub project was started, it is very likely that by the time everything had been finished and the project progressed to the point of signing contracts to order interim subs, the SEA 1000 project would have either also progressed to the point of signing contracts to order the replacement subs, or more likely, the SEA 1000 project contracts would already have been signed.