The system, while still in an experimental phase, is activated when high tides are predicted to reach at least 1.3 metres
Coronavirus and the subsequent lockdowns have hit Venice hard: its 150 canals, so admired by tourists, are empty.
The ship has been pumping out tonnes of pollution in a harbour in Cornwall, UK according to local residents.
The inflatable barriers are supposed to protect the city from tides as high as three metres.
Boatmen wear masks and surgical gloves, while seats are spaced out in the boats to adhere to social distancing rules.
Canals in Venice were almost empty on Monday morning as Italy's fight against the coronavirus pandemic continues.
A plumed angel dressed in an orange ball gown descended from the bell tower high above the Venice lagoon down into a crowd of thousands packed into St. Mark's Square for the annual carnival "flight of the angel" ceremony Sunday
The queen of the Adriatic is drowning. Climate change has been cited but what about corruption?
In Pisa, in north-western Italy, 170 paratroopers were deployed to bolster the city's flood defences.
St. Mark's Square in Venice was awash with water and closed on Sunday as city authorities prepared for another exceptional high tide just days after devastating flooding.
Venice faced a new high tide on Sunday (November 17), a few days after the lagoon city suffered the worst flooding in more than 50 years.
Venice has been hit with another round of flooding on Friday just days after it experienced its worst high tide in more than half a century.
In 1984, Italy launched a flood barrier project called Mose. It was supposed to protect the lagoon city of Venice from high tides.
The mayor of Venice is set to declare a state of disaster after the city was flooded during the highest tide in over half a century.