Contrary to popular belief the power driven vessel is not always the give way vessel, a great deal depends on the circumstances.
Sailboat. A PWC, or personal watercraft, is the give way vessel to any sailboat. In the US, a PWC refers to any small powerboat less than 13 feet in length. As such, it is a powerboat and must give way to all sailboats.
A sailboat and a PWC are meeting head-on. Which one is the stand-on vessel?
the PWC
A PWC is a Power Driven Vessel so she must give way.
When a sailboat overtakes a powerboat, the powerboat is the stand-on vessel. (Ref: SB-29)
Generally, vessels under sail power have the right of way.
Powerboat
When a sailboat overtakes a powerboat, the powerboat is the stand-on vessel. (Ref: SB-29)
When a sailboat overtakes a powerboat, the powerboat is the stand-on vessel. (Ref: SB-29)
Unless the sailboat is overtaking a power-driven vessel, the powerboat is the give-way vessel.
To take early and substantial action to keep well clear of the stand on vessel
When it's the least maneuverable vessel in the encounter.