Good point. In addition to my other recommendations, use a zinc saver
(diodic isolator) on your port power to prevent boat and zinc corrosion when
plugged in at a dock somewhere.

Brian D



"rhys" wrote in message
...
That just means you have a properly bonded and isolated electrical
system on your boat and a properly set up shore power to your
dock...or your mooring.

That also means all the boats nearby are in good electrical order.
Were they not, you would see the zincs going. I replace mine every
four years or so in Lake Ontario. It's a cheap fix, cheaper than
bronze thru-hulls at any rate.

R.

On 27 Nov 2004 06:12:41 -0800, (Dave Mac) wrote:

Hi I was wondering if anyone knows if you need to have zincs on your
prop shaft in fresh water?The one on mine looks original(20+ years)
and still appears 99% intact.
Thanks Dave