Council of Thieves - Collins 2013
The River Edicts
The Laws of Travel, also called the River Edicts, are well known by those who ply the waters in and around Westcrown—and finding ways around them has long been a pastime. First, no one (not even imperial troops) can halt the water travel of anyone on the river. Second, no canals can be blocked or closed save by those given authority by the duxotar, officers of the palace warden, or the city’s imperial naval commander. Third, unauthorized encroachment of imperial waters (a 50-foot perimeter around any moving imperial craft, or 100 feet for a moored one) is punishable by immediate attack and potential death. Fourth, attacks from shore to craft are allowed only in the defense of city property.