Yep, all the internal stuff is scratchbuilt. I used the book Anatomy of the Ship: HMCS Agassiz

The engine is mainly stacked layers of styrene, with the catwalks made out of clear styrene with the slats sribed in and highlighted with a black Sharpie marker (a man can do great things with a Sharpie!)

The messdecks were rushed a bit, I ran out of "official" build time,  so they are missing some detail. I spoke to the people at the Memorial Trust, and they said that the end date isn't all that important, tehy just want the boats out in public to spread the word about he Centennial and the last corvette, HMCS SACKVILLE.

Since I have more time as a result, I am going to attempt to squeeze in some more detail.