Since the historic center of Venice is a network of canals and narrow streets, classic ambulances usually can't get through there. That is why there are so-called sea ambulances (water ambulance) – fast boats equipped like a normal ambulance. They work directly on the channels, have medical equipment like a classic ambulance and transport the patient either to the hospital or to a place where a classic ambulance can pick them up. On the mainland (BC. in the Mestre area), normal wheeled ambulances are already operating.