Generally, vessels under sail power have the right of way.
If a powerboat is about to cross paths with a sailboat under sail give way, the sail boat is the stand-on vessel, therefore you are the give-way vessel and need to move accordingly.
mooring buoy?
only when under sail alone and is crossing path of powerboat
== There are too many variables to give a short answer, but generally speaking... a sailboat has the right of way over a powered recreational vessel when the sailboat is operating under the sail's power only. In other words, even if the sail is up, if the sailboat's engine is running and the propeller is engaged, it is considered a powered vessel.
only when under sail alone and is crossing path of powerboat
only when under sail alone and is crossing path of powerboat
Only when under sail alone and is crossing the path of the powerboat.
only when under sail alone and is crossing path of powerboat
only when under sail alone and is crossing path of powerboat
only when under sail alone and is crossing path of powerboat
only when under sail alone and is crossing path of powerboat