I recently ran across a website on the Internet for a class on Japanese maps and travel literature taught at the University of British Columbia. The site is a repository of student work and appears to be quite current.
I took particular interest in one piece of work on the Nihon Sankai Zudō Taizen, or the Complete Map of the Mountains and Seas of Japan. The map is a hand-colored woodblock print originally published in 1697. The student researched work discusses the map, its background, and some specific features shown on the map, namely, the boats depicted in the artwork.
The article is interesting, and in fact the whole site is interesting. I don’t agree with the authors statement about the boats. I don’t think you can reliably discern anything about the types shown in the artwork. But, I did find it interesting to see my own Higaki Kaisen model shown in the section about bezaisen, and to see my personal ship model work website referenced regarding Tosa wasen, even if the author did misread the information I posted there.
There does appear to be a lot of good information on maps, history, and culture on the site. You can find this specific article here: https://asia453.wordpress.com/tokugawa-maps/tokugawa2016/nihon-sankai-zudo-taizen/