Go Back   Cruiser Log World Cruising & Sailing Forums > Cruising Forums > General Cruising Forum
Cruiser Wiki Click Here to Login

Join Cruiser Log Today

Reply
 
Thread Tools Search this Thread Display Modes
 
Old 03-25-2015, 10:51 AM   #21
Ensign
 
Join Date: Jun 2014
Home Port: Sydney
Posts: 6
Default

Quote:
Originally Posted by redbopeep View Post
I'm becoming really interested in how muddy the water is where people are who are having problems. The dirt in the water has high iron content and the iron creates a black oxide that is inert (and thus isn't good antifouling) whereas normal saltwater gives that brighter green oxide that is active (creating the good antifouling).

Thanks so much for giving your reports and our fingers are crossed that you did indeed allow enough copper to show that it will create the oxides to do antifouling properly.
I'm in Sydney Harbour. When it rains the water is very muddy for a few days as much sediment is flushed into the Harbour. After a few days, the sediment settles out and the water is crystal clear. I'd estimate we have muddy water maybe 5% of the time. My coppershield above the waterline is green; below the waterline a blackish green prior to the 600 grit treatment.
Steve
__________________

__________________
stevemid is offline   Reply With Quote
Old 03-28-2015, 12:04 AM   #22
Moderator
 
redbopeep's Avatar
 
Join Date: Jun 2007
Home Port: Washington DC
Vessel Name: SV Mahdee
Posts: 3,236
Default

I really don't know the proper color of the green--but when we were in the muddy waters of the SFBay area (and we're back!) it became quite blackish and we'd use the brown scotchbrite "doodlebug" to scrub it off underwater to get back to greenish green Hope that helps.

Regular bottom paint has the cuprous oxide (don't know if that's the right spelling and oxide...) rather than copper in it. That is why it doesn't last as long as the coppercoat which does have copper in it that slowly oxidizes. So--if the oxides are happening in the presence of the iron, it just turns out a little "different" I suppose.
__________________

__________________
"Do or do not. There is no try." - Yoda

What we're doing - The sailing life aboard and the Schooner Chandlery.

redbopeep is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Gel Coat Or Paint waywardsuun General Cruising Forum 23 12-05-2011 06:01 PM
Copper-Coat Finally Done. atavist Repairs & Maintenance 5 07-07-2010 05:20 PM
Copper Gaskets teejay Engines | Propulsion | Generators 4 07-04-2010 03:36 AM
Copper Paint On A Wooden Boat atavist Repairs & Maintenance 5 11-29-2009 09:14 PM

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

RV & Travel Trailer Communities

Our RV & Travel Trailer sites encompasses virtually all types of Recreational Vehicles, from brand-specific to general RV communities.

» More about our RV Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities


All times are GMT. The time now is 11:17 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.0
×