[Public-List] painting prop

[Glennb]

I am curious as to how fast barnacles or other growth actually builds up on props?  I haul usually once a year and never have any serious fouling...although Puget Sound is not a hot bed for marine growth, I haven't seen people paint props in Hawaii or Cal waters.  Is this a significant problem in tropical waters around Florida?

thanks
Glenn
SV Dolce, #319

Sent from my iPad

On Mar 21, 2011, at 2:58 PM, Mel Martin <mel.martin at utoronto.ca> wrote:

> Penaten is basically zinc oxide, suspended in an ointment (probably mostly lanolin-based).
> 
> Years ago (many!) I conducted a series of toxicology tests on the use of zinc and zinc oxide as an algaecide. The product we were testing was intended to be a replacement for the high levels of chlorine and bromine used to control algae growth in swimming pools. Zinc, in both its elemental form and its oxide was surprisingly effective at killing blue-green algae (cyanobacter), even at low concentrations. I would not be at all surprised to find that in the form of Penaten it was effective at controlling other bio-growth such as fouls propellers.
> 
> Maybe the fisherfolk are onto something. I can imagine West Marine marketing a twenty-five dollar tin of baby bum ointment as  the latest, high tech anti-fouling agent for props.
> 
> mel
> hull # 452 - renamed Sadhu
> 
> PS my four babies' bottoms all benefited from Penaten to control diaper rash - 'course, that was in the days before disposable diapers ;)
> 
> 
> Message: 1
> Date: Sun, 20 Mar 2011 22:19:16 -0700
> From: Debra Fontaine <debrafontaine at live.com>
> To: public-list at lists.alberg30.org
> Subject: [Public-List] painting prop
> Message-ID: <BLU0-SMTP8585761F2CBA76C5334E9CC3B50 at phx.gbl>
> Content-Type: text/plain; charset="us-ascii"
> 
> The fishermen in the boat yard I was in put penaten on their prop. Its diaper cream and they claim that putting it on their propellers stops stuff from sticking to it. I don't know. Another guy in the boatyard put shoe polish on his. I put shoe polish on mine last year I will find out how well it worked when I see the bottom in April Number 155 La Plaoma
> 
> 
> 
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