Quite an interesting hull design, loks like a longship hull although carvel planked instead of clinker. Some of the others had a more symetrical engine fit, one of them looked to have 2 engines each side. A simple way to convert a sailing boat without having to mount a shaft through the hull. Interesting use of a steering oar instead of a rudder, mounted of course on the steerboard side. Wondering if those horizontal spars are to allow the mounting of a junk type sail.
Jim