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Canadian River Class Destroyer Megathread

https://twitter.com/x/status/1938282229001490750

www.navylookout.com

Building the Royal Navy’s silent hunter: Type 26 frigate programme update - Navy Lookout

On the day the new Shipbuilding Hall at Govan was formally opened, we were invited to BAE Systems’ Clyde facilities to visit HMS Glasgow and see the progress resulting from a £300M portfolio of investment in the yards. On board HMS Glasgow is due to begin sea trials this year, although there is...
www.navylookout.com www.navylookout.com

"Like all first-of-class warships, HMS Glasgow is a prototype, which contributed to its drawn out 11-year, lay down to IOC timescale. Construction was extended by disruptions such as the COVID and technical issues with the gearboxes. BAES is now transitioning into the main production phase and anticipates that, from ship five onwards, a steady drumbeat of one vessel per year will be achievable, each taking approximately 66 months to build."

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The thing that stands out to me is the noise reduction and stealth aspects. The ship will be very quiet, though I have some concerns that the some care was not taken when they cut and paste in the AEGIS system and its own cooling, cable trays etc...

Certainly not as important as engines or shaftlines but important nevertheless. Don't want to undo all the work that went into to making the sub hunter quiet, because of lack of attention to our own additions.
 
Nvlgzr said:
When can we expect first metal cut? I’m not counting the practice module.
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Full rate production started in April. So that's what, two months ago? Still three AOPS in the line right now as well, though the last RCN one is going to be delivered end of this summer.
 
Underway said:
Full rate production started in April. So that's what, two months ago? Still three AOPS in the line right now as well, though the last RCN one is going to be delivered end of this summer.
Click to expand...
Is that actual production runs or test modules to figure out the welding distortion?

Either way, glad the cutting shop will be kept busy, as otherwise it would have been out of work years ahead of the last AOPs delivery date.
 
Navy_Pete said:
Is that actual production runs or test modules to figure out the welding distortion?

Either way, glad the cutting shop will be kept busy, as otherwise it would have been out of work years ahead of the last AOPs delivery date.
Click to expand...
I'm pretty sure we're past test modules at least for the initial subassemblies. Might be more in the future as they get onto different parts with different welding requirements. Into production now.
 
Underway said:
Full rate production started in April. So that's what, two months ago? Still three AOPS in the line right now as well, though the last RCN one is going to be delivered end of this summer.
Click to expand...
Typically, first steel cut is done in an announced ceremony with the minister pushing the start button on the torch with the press in attendance . Not sure what to make of announcing “full rate production “; wasn’t April actually when the production contract was signed?
 
PTM began in 2024. Full production in April 25.

In the context of shipbuilding, a production test module (PTM) is a prototype or initial build phase used to test and refine construction processes, supply chains, and cost efficiencies before transitioning to full-rate production (FRP). FRP represents the full-scale, continuous production of a product, in this case, warships.

Here's a more detailed explanation:
Production Test Module (PTM):
  • Purpose:
    To develop and test specific build processes, establish supply chains, and identify cost-saving opportunities before full-scale production.
  • Activities:
    Involves building a prototype or initial units to identify and address potential issues in the construction process.
  • Example:
    Construction of a Production Test Module for the River-class destroyer in Canada, where build processes and supply chains were tested and refined before full-rate production began.
  • Benefit:
    Allows for the optimization of the build process, leading to more efficient and cost-effective full-rate production.
Full-Rate Production (FRP):
  • Purpose:
    The continuous, large-scale production of a product, in this case, ships, after the PTM phase.

  • Activities:
    Involves the full-scale manufacturing, assembly, and outfitting of the product, with the goal of delivering the final product to the customer.

  • Example:
    The full-scale production of the River-class destroyers in Canada, following the successful completion of the Production Test Module.

  • Benefit:
    Enables the efficient delivery of the product in the quantities and timelines required by the customer.
In essence, the PTM serves as a crucial learning and optimization phase before committing to the full-scale, continuous production of a product. It ensures that the production process is well-established and efficient before moving into the full-rate production phase.
 
Underway said:
I'm pretty sure we're past test modules at least for the initial subassemblies. Might be more in the future as they get onto different parts with different welding requirements. Into production now.
Click to expand...
That makes sense, the hull won't change at this point and the first ship will have a lot of margins on the cut out pattern for some flexibility.

Seeing the giant plates get pieces cut out for assemblies reminds me of watching my mom setting up a sewing pattern when I was a kid, but you need to make the same kind of allowances for seams, joints etc so pretty good analogy for modular ship building.

Lot easier when the giant plasma cutter includes an inkjet that marks every piece and goes onto a pallet for a future job order; still remember a few times wehre the bits of pattern marking came off the fabric and my mom was trying to figure out what was what to put it together. Absolutely wasn't because I was playing with the pins holding that onion paper cutouts in place though.
 
Ships are normally classified on what they do in NATO... however as one can see the definitions are vague

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What is a "CRUISER TYPE" anyways. And how is that different than a "Destroyer Type"? And why does a frigate have both a higher and lower length than a destroyer?

I prefer the new wave of thinking

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The T26 is designed to be a very effective ASW ship, and some of the features on it you probably wouldn't do if it was intended to a destroyer. Sure, we'll slap some missiles and a giant, top heavy 3D radar array on the mast, but it's still basically an ASW platform that we kludged.
 
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