These look like notebooks I've used in the Navy. https://i.imgur.com/h1Wx2Ve.jpg Picture of the cover texture, although for a larger A4 size. The difference here is that the notebooks of that smaller size, usually don't come with the rough texture on the cover. Here is a link to some on amazon. The comments also mention that the notebooks having a smooth or rough cover seems to be random, so you'll still have to look around. https://www.amazon.com/Pack-Tacticai-Military-Book-Record/dp/B07NGGMBB7 Hope this helps!
Those look good.
Small Notebook
Full size Notebook
