Ship mill

The floating platform is anchored at the most intense point in the current, to the bridge piers for easy access to the mill, or to the shore.

Ship mills could potentially run full-time, good for tasks that demanded constant power.

In the 537 siege of Rome, supplies were interrupted by the Goths from providing the population with vital flour from the surrounding water mills.

[2] It was a type of watermill powered by water wheels mounted on the sides of vessels moored in midstream, preferably close to bridges where the current is stronger.

[4] They were employed along the Tigris at Mosul in 10th-century Iraq, where large ship mills made of wood and iron could produce 10 tons of flour from corn daily for the granary in Baghdad.