Joseph's design for Sane was obviously excellent, as he had directly copied it from the famous "Napoleon" battleship which debuted half a century later.
Although the "Napoleon" was the first sailing battleship in the world equipped with a steam engine, its overall structure was very reasonable thanks to the meticulous design by French designers.
This was also the most comprehensible for French designers attempting their first design of a sailing battleship with a steam engine. After all, subsequent designs, while becoming increasingly sophisticated, were also harder to fully grasp.
Furthermore, Joseph actually had a model of the "Napoleon," which he himself had assembled, so he was quite familiar with the internal structure.
Sane's ship was based on the light escort ship "Huge Wave" from the Seven Years' War period and underwent minimal modifications, so the preliminary design was completed in just a few months.