The main hazard would be static electricity due to a the lack of a metal to
metal bonding.

There was a gas station fire in the Seattle area last month that was
attributed to this. Static discharge from the person to the vehicle after
or before the nozzle made contact.

All gasoline boats are required to have a bond wire between the fill
connection to the tank body and the boat bonding system. This is usually
accomplished via the bonding wire in (approved) fuel fill hoses.

That said, what is the use of having all these built in precautions if the
boater uses a can without a bonding system..

Fuel bonding may or may not be manditory in your area, but it's as good an
idea as "No Smoking or Open Flames".

Maybe the reason lawn mowers don't blow up is because the fellows filling
them are standing on the ground as it the lawn mower and completes the
gound circuit.


--
My opinion . FWIW

Steve
s/v Good Intentions