Originally Posted by
seastrength
I have been following this thread with much interest, but remain somewhat confused by the various expert opinions. I have recently taken delivery of a new 6.2M platey and decided to attach a zinc electrode block to the hull on the left spare transducer bracket. My thinking, after owning a second hand tinny for 5 years with multiple corrosion spots over the hull, was that a sacrificial anode directly attached to the alloy might prevent a similar problem in the new hull. Being an electrically challenged individual, I was hoping this would prevent any galvanic corrosion of the hull, hypothetically being the sacrificial anode would corrode in favour of the aluminium. I am not sure whether the electrical circuits are grounded or bonded to the hull and motor, as all electrical were done by the local boat builder and as mentioned, I have no idea of circuits other than how to turn the system on an off via the isolation switch. There is no evidence of corrosion or pitting on the hull to date after 130 hours in salt water and I do a thorough wash down after each trip. Any help and explanation is greatly appreciated. I just want to be sure I have done the right thing (or more importantly, not the wrong thing in tis case). Cheers SS