HI.
I built this ship awhile ago. I had seen it in Korea and had to have the model. It's characteristics are so different from European styles that an example belongs in every collection....well, at least mine and yours. Based upon a book I found I added a second gun deck. It was referred to as Geobukeson II. I wasn't surprised at the variation because many (hundreds?) of these ships were build and improved.
I found that the supplied planking was sufficient to the job and afforded proper scaling.
Enjoy
Thank you for stopping on the log. And thank you for posting your picture.
As you mentioned I also have the feeling that many variations of the same ship were built. All probably shared the covered deck, like a turtle.
There is one example, seen in the below video, that has a second gun deck.
The issue with this kit is that the designer created a second gun deck when, on this "model" of Turtle ship didn't exist. The deck will be modified to resemble the model that is at the museum. This model was designed, the exterior, as the museum replicate. But for some reason, probably to make the assembling easier, the deck of the kit is incorrect.
Museum replicate video where it can clearly be seen there is no upper gun deck.
Also on this other replicate no upper gun deck
I am targeting to build a second deck like on this model.
Why you don't open a log and post your finished Turtle ship pictures with details of your modifications. That will be great !!!
Best !!!
Daniel