Das Wolfsbau (The Wolf's Den) U-boot pens somewhere in France | Model Shipwrights

Mike Kloppenburg and his stunning Das Wolfsbau a scratch-built U-Boot Pens, somewhere in France On 26 June 1940, France falls after a brief battle with German forces. Two days later, Grossadmiral Karl Donitz authorizes the construction of a massive submarine base in Lorient, Bretagne. The Battle of the Atlantic is about to begin.

This is partial text from the full article (usually with photos) at https://modelshipwrights.com/news/das-wolfsbau-the-wolf-s-den-u-boot-pens-somewhere-in-france

Stunning work. Beautiful painting. Any idea of scale? I’m assuming 1/72? What kits were used etc….

Nice work overall, but info on which scale would be helpful.
I’m guessing 1/72 or (less likely) 1/144?