The book examines whether the jurisdiction of coastal States under international law can be extended to include powers of intervention towards vessels posing a significant risk to their coastal and marine environment, but which have not yet been involved in any incident or accident. The books sets out how it is that coastal State jurisdiction can indeed be seen as including powers of intervention towards High Risks Vessels before an incident or accident happens, on the basis of the precautionary principle. The precautionary principle requires taking action when a risk of damage to the...