Posted by Tom W Clark on 11/16/13 - 9:04 AM
#2
The fuel tank grounding disc is NOT an anode. It is a ground plate that merely grounds the fuel tank the sea to dissipate any static electricity and prevent a spark.
Boston Whaler's current practice is to ground the fuel tank the negative terminal of the battery. Because the battery ground is solidly connected to the motor which is immersed in the water, this serves the same function.