Focal Points Navigation > Limitations of electronic and other means of navigation
Multi Purpose General Cargo vessel > 3000 gt 
When sailing in areas such as Chinese waters, where every fishing buoy is fitted with AIS, it is tempting to think that every dangerous object is fitted with AIS. The Disciplinary Court wishes to point out that this is not a safe assumption. There are also many objects in the oil industry that have no power supply, are unlit and do not have AIS. There are also many small and even large ships around the world that do not have AIS or have AIS turned off.