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Ok. i did just that (for the 2000 report). I did not yet find a PDF for the subsequent 2012 compilation, but I read a bit about that. Regarding the ice-keel figures being cited: the National Research Council Canada’s 154-page report, An Overview of First-Year Sea Ice Ridges (2000), and the...

When someone fabricates words you did not say, and uses that as the basis of their debate (which is what Stoker does)? ... Well .. .we have different views there.

Of interest to the Canadian Submarine project, is on 6 March 2026, the Canadian National Defence issued a further Request for Information (RFI) : Notice of Proposed Procurement (NPP) - Request for Information (RFI) for the Sustainment of the Canadian Patrol Submarine. Noah has a description on...

Not with that characteristic in September.

One more point re: ice (... likely for everyone else's amusement). I specifically referenced September. Ice keels are mostly confined to older ice in September. The textbook definitions and NRC reports you cited are for winter ice mechanics, my original point specifically concerned medium...

I want to follow up here on this point - to see if I understand your view. What do you consider to be 'sustained Arctic operations" ?? ie 'sustained' ? How far ? How long? Define in your view, sustained. And do you believe your view of 'sustained' matches what was intended in the top...

You know how thick Medium First year ice is right? And you think a submarine would be worried about an icekeel a few multiples of that very thin first year ice thickness? I can only assume you have never been in a submarine when it dived. I can only assume you don't know, that such, is...

What DND has stated publically says otherwise. DND claims sustained operations in the Arctic is planned for the submarines. Don't believe me here ... Go check the press releases. Check what DND has stated to the Standing Committee on National Defence. Check other official government...

Its an interesting question. TKMS also build the Type-212A (Germany, Italy), Type-214 (Greece, South Korea, Portugal, Turkey) and Type-218SG (Singapore) which need similar AIP reactants. I don't know though if the connectors needed are identical (industry standard ? ) between submarine...

It depends. There could be a stowage tank at the home port pierside for the AIP reactants of LOX and for hydrogen. There tends thou to be evaporation if the stowage is not very very good. So one concept could be the AIP reactants could be generated off base, and trucked in a day or two before...

wow. That is far north. ... and it exceeded my geography knowledge. Way too far for trucked reactant delivery from the south. Looking at Google maps, it suggest the only road to there is via Sweden (and possibly Finland) - unless delivered by ferry - which starts to get a bit illogical, I...

I don't know the Norwegian plans for operations for their Type 212CD fleet. Given they have less ice (and ice of different characteristics) to deal with, I don't believe they share Canada's Arctic deployment complexity. Nominally, I believe the Royal Norwegian Navy submarines operate out of a...

I don't think "no other navy does this" is a particularly strong argument against the concept. If such was always the case, there would never be any naval innovation. Canada's own naval history is a good example. The RN and USN experimented with shipborne helicopters before Canada, but the...

Thankyou for your reply. I think the viability of Arctic transit and Arctic patrols by modern AIP equipped submarines needs to be debated. We are doing such and I think such is useful. I believe your delineating notes of different aspects, are simply overstating the complexity. Canada has a...

Some trivia re: the North West Passage. I found some data, speculating on the percentage of the North West Passage covered with ice. I was surprised at the data for the month of September over the years. Looking at September for some years from 2016 to 2025 — September being typically the...

I think for others on the forum to follow, who have not researched nor monitored this over the years, I will take a step back next, and post some information I learned some time back (years back actually) in regards to SSN submarine Arctic transits, together with more recent speculation on the...

I initially had your view in regards to AIP (back over 2 decades ago) limited only to how you described, ... but AIP has advanced since then, and as AIP advances, how such advances can be used in submarine operations is something that clearly has to be constantly evaluated and re-evaluated...

Containerized reactant replenishment is being made by some to look far more difficult than it actually is. Such already exists in different forms, in Canada. Its clear to me at least, this likely has not been investigated by all. When it comes to safety and difficulty, all which are valid...

I see the opposite happening. If the RCN doesn't go for the sub designer to "define, modify, navally certify" and hold them accountable to that for the AIP reactant replenishment system, and if the RCN instead try on their own to fabricate some base RCN design requirement, without the active...