This paper model is a Matchanu-class Submarine, employed by the Royal Thai Navy, built in Japan by Mitsubishi, and in commission from 1938 throughout the Franco-Thai war and World War II, the papercraft is created by Chaiwat Kosatanakom, and the scale is in 1:700.
You can download the papercraft model here: HTMS Matchanu-class Submarine Free Paper Model Download [Yadi.sk] [Box] [Gavitex] [pCloud]