On Jan 18, 10:39*am, " Tuuk" wrote:
Check the ingredients of that antifoul paint. If its ingredients include
somethings like zinc or cadnium or nickle or magnesium or something with a
negative potential, then they are simply trying to solve their anodic
galvanic reaction which might be attracting the animals. Easier to solve
with a rectifiar or battery issues.

"Edgar" wrote in message

...



"Bruce In Bangkok" wrote in message
..

Has anyone tried any of the anti-fouling schemes intended for
propellers, and if so what was your experience?

The question comes about because I just had to dive on my prop and
clean it. When I got down there I discovered a mass of "clams" as big
as a bushel basket. Took two days to scrape them all off.

True, for one reason or another, the boat hasn't moved in the better
part of a year but still I don't believe I have ever seen as much
growth. Must be either global warming or high CO2 content :-)

In any event, it does make one think "there must be a better way".

Cheers,

Bruce
(bruceinbangkokatgmaildotcom)

Ordinary ablative antifouling might be better than nothing if you hardly
use the boat but it washes off in no time at all if you run the engine. I
use some expensive stuff in a spray can that Volvo produce for their
underwater units. This seems basically to be the same sort of antifouling
but harder, so it does not wash off so quickly. Also it makes a somewhat
slick surface so that barnacles find it harder to stay on while the prop
is running.
I have a theory, not yet put to the test, that the very slick paint that
has been produced to make a wall graffiti-proof would be the way to go
because barnacles could not stick to it at all once the prop started to
rotate.. The reason I have not yet tested this idea is because the
smallest quantity that I have found for sale is about 10 gallons.

I have tried everything and finally decided to use a plastic
"Perfectpitch" prop. They provide a special puller so you can easily
take the prop off to clean it.