[MetroMPG]

Well, the title of the thread isn't quite right.

It was a solar powered boat - not just solar "assisted". All the power used came from the sun.

But the 80 watt panel wasn't powerful enough to run the motor in "charge sustaining" mode, because its minimum draw on low was about 116 watts.

So I guess that makes it a "solar range extended electric boat"? And the deficit was made up while it was tied to the dock and the battery was recharging.