If you have good reason to doubt these claims then by all means address these concerns - isn't that what these forums are for? Open discussion? But I have no idea how the utilization of open source material in this manner could possibly provoke a response from a moderator as a moderator.
I'll give you one example - there are a myriad more
SB Block 1A is a conventional conversion of the SB nuke
The drivetrain doesn't exist
No western country has used a DE drivetrain on a pumpjet - it has yet to be designed, tested and then developed - and that needs to be done before it goes into the last 3 sections
Look at the pumpjet on a nuke - its able to develop basically instant thrust - ie sprint and surge on demand - the best DE available can't do that - IOW there is an immediate change in performance and handling dynamics
then compare the drivetrain real estate issues on a nuke and compare it to a conventional
the nuke doesn't have to deal with any issues of changes of fuel state impacting upon handling
the nuke doesn't have the same real estate issues as there are no bunkerage issues and no battery issues commensurate with the drivetrain
ie all of that real estate advantage that is available to a boat with a small nuke changes dramatically with DE drivetrains
the handling issues are immediate
the acoustic management issues increase exponentially with DE compared to nukes
and then there are the energy management issues.
you just can't add 30% more KW based on a 30% increase in size.
I'm not dumb enough to talk about the classified issues - I'm only talking about the engineering realities
there's a difference between discussing capability issues and making claims about inherent performance
some of the discussion about pump jets is just tosh.
we avoid hypotheticals as much as possible on this forum for a reason - accordingly when people discuss things they tend not to make empirical claims - especially when this is actually a greenfields build
the only thing that will retain a probability of minimal change will be the outer shell - everything else changes.
I blame idiotic journos for some of the nonsense that we see, but its sites like this where we try and talk about defence issues with a dose of reality.
if you look at those with blue tags (eg) - they invariably qualify with caution - there's a reason why they do that. prev experience and a bit of circumspection.
I'd suggest reading through a number of posts in the RAN thread to get an indication of tone and intent - we've discussed subs in here over the last 10 years.
there's a wealth of knowledge from people who have actual sub design, industry and defence experience.
and I've worked on french built subs on tech transfer issues.....