"It’s actually frames with ply sides "
Didn't doubt that for one minute Mike.
Very like my balsa built H Class destroyer HMS Hotspur.
She was scaled up to 1/72 from the Airfix 1/600 kit when I was about 15. A fiddly job!
If you need any help with the superstructure let me know.
I built mine twice!
First using 1/16 balsa, second (about 20 years later) using 0.5mm ply on 1/8 square obeche frames. Nowadays I might use plasticard😉 Crew was shanghaied from my Airfix 1/72 8th Army and Afrika Korps soldiers. Cap'n on the bridge is/was a Panzer Kommandant😉
I also glass fibred the original weak 1/32nd balsa hull and upgraded the original tiny Mabuchi motors to a pair of Graupner 540s and added full RC during that refit.
Cheers, Doug 😎