Our biggest concern was wake. Besides small boats like ours there are four kinds of watercraft working out of Venice. Commercial fishing vessels, oceangoing tankers and container ships, tugs pushing barges full of cargo, and giant crewboats that take personnel and materials to and from the oil and gas rigs offshore. The fishing vessels don't throw much wake, they just smell bad. The tankers and tugs push a great deal of water, but while their wakes are large, the waves come far enough apart that you don't need to worry much. The crewboats, though, with their high, deep bows and powerful props, throw curling breakers that can swamp small craft.