I have a new to me Bayliner 4588. I purchased it in Ontario Canada
and brought it to New Hampshire last week.
We did a short haul survey
. Neither the owner or surveyor
could tell what type of anodes were used: shafts and main on transom about 6x12x3/4. And stern thruster apparently not on bonding system with 4 bullet anodes about 2".
So, I got it home and am checking the bonding system and hull
potential with a AgCl half cell. Bay is salt/brackish.
I'm on a mooring
. Nearest neighbor is 75 feet.
Turn off all power, battery
switches, breakers, physically disconnected thruster batteries
, the works, except automatic bilge
pumps. Lowest pump
was in water
so I lifted it out. Checked all bilge
pumps for ampicity. Zero
With the half cell readings are -216 -220mv at all bonded locations:. Engines, through hulls, shafts, striuts , rudders, main anode attachment, etc.
Checking the thuster mount (apparently not part of the bonding system) read -100mv.
Next steps are to call a diver and hang a big anode over the side and see if that makes a difference.
Aside from equipment
calibration ( I used two multimeters) any suggestions what I should be looking for?