I have a 9 page article (in French) about the battle of Koh Chang with a lot of info and two CGI of the Thonburi.

I have a Russian language PDF about the same battle with profile and plan view of the Thonburi.

I have an extensive monography describing in full detail with plenty of plans the rare twin Japanese BT-Model 1 Mk1 40mm, four of which were shipped on the Thonburi

And, of course, I have the 1:700 waterline kit of the Thonburi by Snowman

My address is bgiremodelguy (at) gmail.com