The actions you must take when encountering another vessel are found in the Collision Regulations.
Note that the following illustrations are not drawn to scale. The vessels are shown closer to each other than they should be when actually encountering another vessel on the water.
Meeting Head-On: Neither vessel is the stand-on vessel. Both vessels should turn to starboard (the right).
Paths That Cross: The vessel on the operator’s port (left) is the give-way vessel. The vessel on the operator’s starboard (right) is the stand-on vessel.
Overtaking: The vessel that is overtaking another vessel is the give-way vessel. The vessel being overtaken is the stand-on vessel.