It's important to have a clear rule that everyone in the world understands, to prevent collisions.
Give-way to the starboard side
Give way
Give way
Give way
Give way
Powerboat A should give way to B.
Powerboat A should give way to B.
Powerboat A should give way to B.
Powerboat A should give way to B.
give way to the starboard side
Give-way to starboard side
The vessel on the starboard quarter always has right of way. The vessel approaching on the port side has to give way.