"These 3 ships of equal width, length and depth, being moved by equal powers, will generate various speeds of motion, but the ship that sends its widest part before, it is faster and is similar to the figure of birds and greater fishes."
The model represents a bow of ship with bulb-shaped cutwater. Leonardo intuites that,
at high speeds, the bulbous cutwater performs better than the straight one.
The model is based on the drawing:
- Manuscript G f. 50v. (1510-1515)
Paris, Institut de France