Labels:text | screenshot | font OCR: Here, in one of the most practical sections of the codex, Leonardo explores the issues affecting water travel from the boatman's point of view. He opens the section with a very general text on the effects of floods on river bottoms and some observations on the tides and coastal currents in the area. He provides practical drawings A and written notes and links his hydraulic theories with practice on the water. He discusses how to read the water's surface and currents to learn about sand deposits and depth for navigation and
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