Todjaeger
Potstirrer
Care to expand on that, since that assertion is counter what to what I am aware of with respect to RAN sub procurement. The RAN, like the RCN had operated Oberon-class boats and when the RAN were preparing to start decommissioning and replacing those subs, the RAN inspected the RN's mothballed Upholder-class diesel-electric subs since they were candidates for the replacement subs. Ultimately the inspections Australia did of the Upholder-class subs found sufficient issues with those subs and how they had been stored to determine that they were unsuitable for RAN needs and it would be better for Australia to go with a new design and also develop a mostly domestic sub production capability.Also contains some information on the masts for the Attack submarines. Personally very dubious they will ever complete the Attack program. History of submarine procurements in Australia is even worse than our own.
Yes, the design selected for RAN service was not, at least initially, quite up to the performance capabilities that the RAN wanted or had specified. Those issues AFAIK have since been resolved in a satisfactory manner. Meanwhile, the RCN did end up purchasing the ex-RN Upholder-class subs and renamed the class of subs the Victoria-class. Unfortunately some of the issues that were found by Australia did end up causing some issues for the RCN which had led to limited service from and restrictions on what various RCN subs could do while the issues were pending resolution.