The power vehicle is on the right, therefore it is looking at the other vehicle's green light, making the vehicle on the right the stand on vehicle (meaning it maintains present course and speed).
Starboard ( right side ) and it should be mounted so it is visible at 135 degrees .
How the two vessels are propelled
This depends on the size of the vessel, what the vessels activity is, what the vessel is used for and how it is being used. Need more info.
If they are BOTH power driven vessels, the vessel to "right" (Starboard) would be the "stand on" vessel, maintaining course and speed. The Vessel on the "left" (Port) is the "give way" vessel and will have to (if) possible avoid crossing in front of the stand on vessel. Please refer to the link below. Rule 15
The power vehicle is on the right, therefore it is looking at the other vehicle's green light, making the vehicle on the right the stand on vehicle (meaning it maintains present course and speed).
when the power-driven vessel is towing another boat and has difficulty maneuvering
vessels operator
Assuming you are referring to a fog horn or a warning signal, generally find where the other vessel is and change course accordingly
Be alert and observant.Scan 360 degrees and act accordingly. ALWAYS look before you leap.
the vessel operator
A power driven vessel is often understood to be a mechanically driven boat. Human power as in rowing or wind driven power is not usually considered power driven.
The power-driven vessel should change course and speed.