Cruise ship MSC Opera crashed into the San Basilio terminal and came across a smaller tourist boat – the river countess – docked there, CNN said.
Four people suffered from "light" injuries "in the accident, it said.
The incident occurred around 8.30 am local time on the Giudecca Canal, one of the liveliest in the Italian city, which is extremely popular with tourists. [19659002VideoonTwittershowedthehugecruiseshipheadingforthedocksmallerboatoutofthewayandon-shoreescapes
"The sound of sirens and collisions is totally scary and looks like a scene from a catastrophe movie", wrote Twitter user Tancredi Palmeri, who posted a video of the dramatic collision.
Cruise ship operator MSC Cruises said in a statement that the ship had "a technical problem" when it was on its way to the terminal for mooring "src-mini =" // cdn.cnn.com/cnnnext/dam/assets/1