Italian commuters find a moment of peace on a cable-guided ferry sketched by Leonardo da Vinci

IMBERSAGO, Italy (AP) — The ferry glides from one bank of northern Italy's Adda River to the other, guided by a cable and pulled by currents, offering harried commuters five minutes of serenity and an alternate route now that a bridge closure has backed up traffic.

Called “Leonardo’s Ferry,’’ the mechanism of the so-called reaction ferry was designed five centuries ago and immortalized by the Renaissance genius himself in a drawing preserved in Windsor Castle's Royal Collection outside of London.

It is the last remaining of its kind along the Adda River, which extends from the Alps to the Po River in the Lombardy region.

“This is a mean of transport that has been here for 500 years and has always connected the two banks of the Adda,” said Massimo Zoia, one of the volunteer ferrymen who operates the vessel. “And now it has returned to its original purpose: connecting two populations living on different banks of a river."

Despite its name, it remains unclear whether Leonardo himself actually designed the ferry. What is certain, however, is that he sketched it in 1513, as part of his famed studies of waterways, including Milan's canal system. Leonardo was one of history’s greatest polymaths, filling notebooks with designs across a range of disciplines, including flying machines that wouldn't be realized for centuries.

The ferry’s operating principle is as simple as it is ingenious, and entirely environmentally friendly.

“The river pushes us downstream. We have a cable that binds us, and by breaking down the forces, according to the parallelogram rule, which we study in high school, the force is broken down and one part becomes resistance and the other we use for lateral movement,” Zoia said.

“The rudder is used to adjust the inclination of the ferry so that it better absorbs the stream that hits us and makes us move,” he said.

The ferry is run by the town of Imbersago, and runs to the town of Villa d’Adda on the other side. It came close to disappearing in 2023, when its operator gave up the concession. Determined to save it, Imbersago Mayor Fabio Vergani obtained a ferryman’s license himself and, together with the local tourism association, assembled a team of volunteers.

Since 2024, they have primarily transported weekend visitors from one bank of the Adda to the other.

But they added commuter service this spring after a nearby bridge was closed for maintenance to help ease traffic congestion. It now runs from 7 a.m.-7 p.m., with a two hour lunch break at noon. Passengers pay 1.50 euros (about $1.75) if they are on foot, 2 euros ($2.30) with a bicycle, 2.50 euros ($2.88) with a motorbike and 3.50 (around $4) for a car.

Gianpaolo Graffagnino lives in Villa d’Adda and works on the other side of the river. He has started biking to work, using the ferry as a shortcut.