Final answer:
As the operator of a power-driven vessel, you should give way to the sailing vessel, altering your course to avoid collision and ensuring a clear path for the sailing vessel.
Step-by-step explanation:
When you are the operator of a power-driven vessel (A) and you meet a sailing vessel (B), the appropriate action to take is to give way to the sailing vessel. This means you should alter your course in such a way as to avoid collision and provide a clear path for the sailing vessel. According to the rules of the road in maritime navigation, power-driven vessels must give way to non-powered vessels, such as sailing boats, when the paths of the vessels intersect and there is a risk of collision.