You make some great points Calculus, but have you taken a look at the Australian experience with the French building their 4000 Tonne Barracuda Blk 1A class AIP in Australia. Something like that could be built here in Canada as well. All three of our major shipyards could be involved in the bidding process. Don't know how the Japanese would react though. They could also be involved with their LIB expertise. I hear nothing from the government on a "continuous build" for the NSS of any vessel and who is to say that Irving will win a future contract to build follow-on ships or submarines. The Japanese and French are about the only countries capable of building the kind of submarine Canada will need, especially in the Arctic no matter what propulsion systems may be selected. The others are just not capable or have large enough sub designs required. Cheers!Not sure I agree with that statement David. For one, the cost of building up a domestic capability is just as likely to bring down a government as an offshore build would be. For another, there are strategic and political points to be gained by getting our subs from another country that can't be discounted. And lastly, buying from an established line will ensure availability of parts and support at a better cost than an orphan bespoke Canadian sub program. Another equally important question is who would build these subs? NSS is built around the principal of "continuous build", such that when the last CSC is getting delivered, the follow-on design should be in the starting blocks at Irving already. Same story with the "non-combat" ships. Even if we add Davie as a third NSS yard, where is the capacity going to come from to build subs? It's a grand idea and all, but the cost of building such a specialized ship from scratch is, in my opinion, a waste of precious defence funding. Canada is a big country and definitely has some unique operational requirements, but there are designs out there now from the German, Swedish, Japanese, and French builders that are big enough to satisfy most if not all of our requirements without having to reinvent the wheel. It would be good to collaborate with a designer to get what we think we need, including on the propulsion system, but designing from scratch makes so sense to me.