White Sea–Baltic Canal waterway length is , of which are man-made. The current flows north from Lake Onega to the White Sea, and all navigation marks are set according to it. Once in Lake Onega, ships can exit the southwest shore through the Svir River (and its two locks) to reach Lake Ladoga and then proceed down the Neva River to Saint Petersburg and the Baltic Sea. Alternatively, from Lake Onega river ships can sail eastward into the Volga–Baltic Waterway. The canal begins near Povenets settlement in Povenets bay of Lake Onega. After Povenets there are seven locks close together, forming the "Stairs
Port Tampa Bay which has exclusive truck lanes to route truck traffic from Interstate 4 directly to Port Tampa Bay, which now allows trucks to bypass city roads and travel directly between the Port and the interstate system. Tampa Bay has been used as a wide, safe harbor ever since it was first mapped by Spanish explorers in the 16th century. Álvar Núñez Cabeza de Vaca referred to the entire bay as a "Port," writing, "The Port of which we speak is the best in the world." In 1821, two years after the United States bought Florida from Spain, James Forbes, Military Governor