Question 4 Rules of the Road

The correct answer is B) there is any doubt that a risk of collision exists. According to both the International and Inland Navigation Rules, if there is any doubt that a risk of collision exists, the vessel shall assume that such a risk does exist and act accordingly. This is the fundamental principle for determining if a risk of collision exists. The other options are incorrect because: A) A steady bearing at a constant range is one indication of a risk of collision, but not the only criterion. C) The number of vessels nearby is not relevant to determining if a risk of collision exists. D) A "special circumstance situation" is not a defined regulatory condition for determining risk of collision.