Jean Aubert was a French engineer.
In 1961, he used the idea of the German engineer Julius Greve from the last century to describe a pente d'eau (English: water slope), which was a way of moving boats up the gradient of a canal without locks.
The design consisted of a sloping channel, through which a wedge of water on which the boat was floating could be pushed up an incline.
This concept was used in both the Montech water slope[2] and the Fonserannes water slopes.
[1][3] David Tew, 1984, Canal Inclines and Lifts, Gloucester: Alan Sutton.