Navigation
The Main is navigable for shipping from its mouth at the Rhine close to Mainz for 396 km to Bamberg. Since 1992, the Main has been connected to the Danube via the Rhine-Main-Danube Canal and the highly regulated Altmühl river. The river has been canalized with 34 large locks (300 m × 12 m (980 ft × 39 ft)) to allow CEMT class V (110 m × 11.45 m (360 ft × 37.57 ft)) vessels to navigate the total length of the river. The 16 locks in the adjacent Rhine-Main-Danube Canal and the Danube itself are of the same dimensions.
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