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Old 06-11-2012, 03:05   #136
Marine Service Provider
Schooner Chandlery's Avatar

Join Date: Jan 2007
Location: home port Washington DC
Boat: SS Crocker design #131
Posts: 986
Re: Coppercoat bottom paint

Originally Posted by Roy M View Post
Photos of a Coppercoat hull after six months in San Diego harbor. Photos taken two days ago.
I think I'm double posting. But anyway..

Somebody pointed me in the direction of this post and asked me to respond since they knew that we'd used Coppercoat and were in San Diego quite a bit with it.

Are you SURE that is it Coppercoat? That just really, really, really doesn't look right. We were in San Diego with brand new Coppercoat April 2009-Feb 2010 and it only required a bit of "dusting off" of...fluffy stuff and a little bit of using a scotch-brite pad on some small (half the size of a dime) pink-red disks that were managing to attach themselves here and there. Hubby dove on the boat every 2 months while we were there. Went up to Newport Harbor and Channel Islands 2/2010-6/2010. Cleaned the bottom in May in Newport Harbor. Mud on the bottom wiped away, not a lot of other stuff on it.

Always have a big "tumbleweed" of stuff around the prop if we're staying still for more than a month--that prop is Bronze and doesn't have any anti-foul on it.

Spent 6/2010-11/2010 wandering around between So Cal and SF Bay including the Delta. Had a haulout look-and-see at Napa Valley (excellent prices) in 6/2010 only 14 months after our launch in San Diego 4/2009. We raised the waterline a bit and put on a bootstripe (purpose of the haulout) and all looked spiffy at that time. Topside paint had been in the water and would get a fringe of green on it quickly.

Spent 11/2010-8/2011 mostly in San Diego. Hubby cleaned the bottom about every 2 months. Wipe down, nothing major except a fluffy tumbleweed at the prop one time.

8/2011-10/2011 wandering around again between So. Cal and Nor. Cal.

11/2011-present hanging out in SFBay. Muddy up here, so we'll pick up a bid of mud on a quarter section of the hull sometimes depending on where we're berthed and what we're doing. Hubby took a break from cleaning the hull over the winter--so no cleaning between 11/2011 and 4/2012. Found a dark (blackish) biofilm on the hull under the fluffy mud. Assume biofilm and not just another level of oxidizing of the coppercoat. He scrubbed it off with scotch-brite saying it was hard to get off and wondering if perhaps it actually was additional oxidation of the coppercoat. No real growth--oh, except for a big, BIG tumbleweed of stuff around the prop.

4/2012 to present cleaning every 2 months or so. Only Bay mud to wipe off.

That's it.

I think that your pics of all that growth are pretty impossible in San Diego Bay with new coppercoat, based upon our experience with the same. Perhaps it was something completely different than coppercoat.

Fair winds,
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Old 08-11-2012, 04:47   #137
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Re: Coppercoat bottom paint

It is good to hear that Coppercoat treatments are performing as anticipated for contributors “redbopeep” and “wingNwing”. Long may they continue to do so.
In response to Richard (“stillbuilding”), I am pleased to confirm that Coppercoat has indeed been tested by all sorts of independent bodies and boating magazines over the years. Given that 2013 will be the 20th anniversary of Coppercoat, this is probably not surprising!
To read about a long term test on Coppercoat (over 14 years!), click: 1#!/photo.php?fbid=351623644934376&set=a.3516233916010 68.81167.326552387441502&type=3&theater
For a short term test (single season) comparison to conventional anti-foul, click: 1#!/photo.php?fbid=351624564934284&set=a.3516233916010 68.81167.326552387441502&type=3&theater
To read about speed/performance increases for motorboats, click: 1#!/photo.php?fbid=351623784934362&set=a.3516233916010 68.81167.326552387441502&type=3&theater
If you are planning long distance cruising or a circumnavigation, click: 1#!/photo.php?fbid=351623964934344&set=a.3516233916010 68.81167.326552387441502&type=3&theater
Or if you just want to read about application details and see an example cost comparison, click: 1#!/photo.php?fbid=351623434934397&set=a.3516233916010 68.81167.326552387441502&type=3&theater
As you can see, different magazines/journalists have focused on different elements to suit the interests of their particular readers. These articles (and a host of other information) can be found on:
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bottom paint, paint

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