I would like to see a deal with naval group for 3 barracuda SSN for use in the Arctic and 6 scorpene subs to replace the 4 subs we have now but I can't see that happening
1. Canada has 4 diesel electric (DE) submarines that are powered by two problematic Paxman Valenta diesels. Some sources claim that these boats due to design flaws were found to have a range of 4,000 nautical miles (or 3475.9 miles), instead of its intended range. From what I see there is no current capability to conduct long patrols of the type undertaken by nuclear attack submarines.
Q1: Does your post have any substance or analytical reasoning to back up this need for nuclear power?
2. The Victoria-class are similar in displacement to the batch 2 Dolphins*, which have a reported range of 8,000 miles and over 400 miles at an economical speed of 8kt dived.
* The AIP equipped batch 2 Dolphins are larger than the batch 1, Type 212A German submarines. In October 2017, Israel and Germany confirmed that they have finalised a MOU for the purchase of three more Dolphin-class submarines to be delivered starting in 2027. These boats will replace the first three of the class which by then will be about 30 years old.
- Displacement: 2,050 tons surfaced, 2,400 tons submerged
- Length: 68.8m
- Beam: 6.8 m (22 ft)
- Draught: 6.2 m (20 ft)
- 3 MTU V-16 396 SE 84 diesel engines with three Siemens 750 kW alternators, and a Siemens sustained-power motor of about 3 MW output power
- Speed: 25 kts submerged
- Complement: 35 + 15 passengers
- Armament: Six 21" (533mm) torpedo tubes and four 26" (650mm) torpedo tubes.
3. IIRC the Australian submarines (and their planned replacement, which are to be powered by 3x MTU 12V4000U83) have a requirement for long range 70+ day patrols, with long transits. It would be interesting to see Canadian requirements, if they can be shared. It seems what Canada needs is a longer endurance DE submarine.
Q2: What is the current Victoria-class CONOPS for these 2,455 ton DE boats?
Q3: Why a mixed fleet of nuclear and DE submarines?
4. Both fleets will have non-trivia engineering support costs plus the fact that Canadian navy lacks the crews to keep such a large proposed fleet of 9 submarines manned. The cost of going nuclear is very significant and there must be some realistic analysis of military off-the-shelf DE submarines as alternatives, by looking at the Korean,
Japanese, Italian, German or Swedish boat builders (for some analysis of DE alternatives, please see:
RSN capabilities). In addition, I note that the JMSDF on 5 Mar 2020 welcomed into service its first submarine using lithium-ion batteries with the commissioning of JS OURYU as the 11th Soryu-class boat. The first 10 Soryu class boats used traditional heavy duty acid batteries with an AIP module. The 12th Soryu-class and final boat, will be built by Kawasaki Heavy Industries (the other 6 having been built by Mitsubishi Heavy Industries) without an AIP module. This boat was launched 6 Nov 2019 will serve as test-bed for the next generation 29SS submarines, which are also powered by lithium-ion batteries with a dramatically smaller sail.
the three options I have seen mentioned in Canadian defence journals are Soryu (with solid-state batteries for extended submerged patrolling), A26 Oceanic ER (with Sterling engines and LI batteries for extended submerged patrolling), and Type 216 (with enhanced fuel cell for extended submerged patrolling). Note: The status of the Type 216 is a bit unclear as it no longer seems it is being actively marketed.
The RCN desires a conventional sub capable of patrolling under the arctic ice sheet, and that means both long submerged range but also the ability to surface in an emergency through the ice, which means sail and hull reinforcement. It's not clear if any of these subs have that capability, however. They all have significantly greater endurance than the Victorias, however, at 80 days.
5. Siemens started on the R&D of large-scale Siemens Permasyn propulsion motor in 6 MW class for the Australians; and they also plan to cover the product range of 1.5 MW to 8 MW, with the
FLEX PM solution — a product range that is well suited to meeting the future requirements of the 3,000 ton KSS-III and Australia’s 4,500 ton Attack class submarines.
Directed at no one person in particular, but I'd pay close attention to Forum Rule #19 which includes a prohibition on discussing 'fantasy' topics. Given that the Liberal's 2017 defense policy envisioned replacing the current subs in 2040 and that there doesn't seem to be any current plan to replace them, or fit them into any sort of national shipbuilding program, then discussion on indigenously developing and designing first a suitable compact nuclear power plant for a sub, then the sub itself, and then arranging everything to be built in Canada really does get into fantasyland. Especially since Canada has history spending defense dollars, only to see things get cancelled following a change in power, when Defence isn't exactly flush with cash in the first place.
-Preceptor
6. Time and again, we see advocacy for nuclear propulsion for Canadian or Australian submarines. But these advocates never explain why the slow poke nuclear reactor is better. And more importantly, how will going nuclear be better at Canada’s set tasking and CONOPS (when compared to the Victoria class submarines, which are short ranged conventional submarines).
Q4: Can Long range explain the likely CONOPS, needed for each class, as he proposed, to drive such a huge increase in the submarine fleet (from the current 4 to a fleet of 9)?
Hopefully this will put to rest some of the misconceptions around the capabilities and usefulness of the Victoria Class submarines:
Sense, Send and Strike - Armada International
In addition to the the projects detailed in the article, which are part of the Victoria Class Modernization (VCM), there is also a submarine Lifex planned for around 2025, which will extend the life of these subs into the "mid 30s" time frame. Details of the Lifex are hard to come by, as it is still in project definition stage.
7. Thanks for this useful link on the Victoria-class to bring us back to reality.