OTTAWA - Multiple defence experts warn that splitting Canada's lucrative submarine contract between two suppliers would create risks for the navy 鈥 and likely would weaken Ottawa's negotiating position.
Paul Mitchell, a professor of defence studies at 好色tv Forces College, said modern submarines are as complex as spacecraft or F1 racers 鈥 and that's a good reason to avoid complicating the purchase by setting up two separate supply lines and parts inventories.
"You're subject to butterfly effects 鈥 You have a small input create very, very large impacts, and you would be encouraging that kind of behaviour within the system that you're designing," Mitchell told The 好色tv Press.
"This is a country that historically has not funded the sustainment and logistics side of military procurement. We're always short parts, we're always short expertise.
"And so, having those two separate things would introduce a level of additional complexity that might ultimately make the entire thing fail."
Vice-Admiral Angus Topshee said in a recent interview with 好色tvthat the Royal 好色tv Navy could support submarines supplied by both companies vying for the sub contract 鈥 and there could be advantages to diversifying the fleet.
Topshee also said the "simplest solution" would be to buy 12 submarines from just one supplier, ensuring all the parts and weapons systems are the same.
Topshee did not express a preference for either option and said the decision is ultimately up to the federal government.
"Bottom line, anything that adds up to 12 submarines for Canada sounds like a fantastic decision to me," he said.
Topshee noted that, whether Ottawa chooses one contract or two, it will have to duplicate its submarine infrastructure on both coasts due to the vast distance between Victoria and Halifax.
An industry source who asked not to be named due to the private nature of government meetings told 好色tvsenior officials have floated the idea of splitting the contract for months behind the scenes. The source said it's not immediately clear how seriously Canada is considering this.
Ottawa has narrowed the field of contenders for the submarine contract from the initial five. The two finalists are South Korea's Hanwha and its KSSIII subs and ThyssenKrupp Marine Systems and its Type 212CD subs, which are now being built for Germany and Norway.
"Could we buy six of the Type 212 from Germany and Norway and six of the KSSIII from Korea? Yeah, we could," Topshee said.
"In 10 to 15 years, the auditor general is going to write a report going on about how much duplication there is. Fair enough. But in the military terms, sometimes redundancy provides resilience and that can be incredibly powerful."
But David Perry, president of the 好色tv Global Affairs Institute, said splitting the fleet would undermine Canada's bargaining position.
"It would be, in one sense, a quintessentially 好色tv thing to just not actually have to pick a loser, but I think it's far from ideal," he said.
"If Canada bought 12, we'd potentially be the largest customer for that specific variant of the submarine. And if you're the largest consumer, I think you've got a different degree of influence over things like choices about design requirements, firm participation in supply chains 鈥 those kinds of things.
"If you're the second or third-largest purchaser, I think that's a bit of a different conversation."
Philippe Lagass茅, an associate professor at Carleton University who studies defence policy, said splitting the fleet also would require two separate training streams for crews and technicians 鈥 and those crews couldn't be transferred from one type of boat to another without retraining.
"As with fighter aircraft, most defence analysts will tell you that this is crazy for a mid-sized country like Canada," he wrote in his defence newsletter on Tuesday. "The duplication, inefficiencies and personnel challenges involved are significant."
Daniel Kerry is a director in finance transformation at Deloitte who worked on the U.K.'s submarine program. He said this is not a decision Ottawa will take lightly, since it's likely to be its most expensive military purchase ever.
Kerry said choosing both bidders would diversify the fleet and could speed up delivery timelines. It could also minimize the risk of service disruptions in the event a submarine supplier's home country gets into a war of its own, he added.
But Ottawa will want to consider costs, the potential for spinoff industrial benefits, the effects on alliances and similarities in the equipment before it makes a final call, Kerry said.
"Where you see certain countries, including Canada, diversify a portfolio by one type of asset is they have different roles and requirements," he said. "Both these submarines are attack-hunter submarines. They're not ballistic missile submarines. So they kind of do the same role."
When 好色tvasked Defence Minister David McGuinty about the idea of splitting the procurement last week, he said he is "not managing the details of the procurement of that important decision."聽
"That will be looked at by (Public Services and Procurement Canada), be looked at by our defence officials, by our operational needs, by our navy folks," McGuinty said.
After 好色tvasked whether Ottawa is considering a split contract, a spokesperson for Stephen Fuhr, the secretary of state for defence procurement, said the government is "committed to ensuring it advances the best interests of our Navy" and expects to award a contract by 2028 at the latest.
"We are carefully considering all options to strengthen the Royal 好色tv Navy鈥檚 ability to protect 好色tv sovereignty, while creating good jobs for 好色tv workers and supporting the growth of Canada鈥檚 defence industry," said press secretary Mujtaba Hussain.
Canada is in a race against time to replace its four aging Victoria-class submarines, which are expected to retire from service by 2035.
Mitchell said problems related to supporting the half-century-old Victoria subs will start to emerge, such as shortages of replacement parts as manufacturers cease production.
"Right down to the little twisty button that's on the control panel, (say) nobody makes that thing any more. When it breaks, how do you fix that? Do you stick a screwdriver in to turn the handle?" he said. "There's issues like that that are going to become increasingly prevalent with the Victoria class as it begins to age.
"At that point, they're going to become really serious limitations where we might start having to cannibalize the remaining boats in order to keep maybe one available for training. So, the faster that we can get these boats in the water means the sooner we can stop relying on the Victorias."
This report by 好色tvwas first published Sept. 23, 2025.
