Rule 18
This Rule sets the priorities for special classes of vessels. Obviously, those with the most manoeuvrability give way to those with less.
In addition to knowing this Rule, you need to know the details of all the Rules of Part C. It is that knowledge that will allow you to identify those special category vessels.
Of course, you can always give way to any vessel showing a special signal, at a basic level this is probably sufficient. However, you may come across situations where you need to be able to identify several classes of vessels and assign the relevant rights of way to them in order to avoid the places they will manoeuvre to.
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