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12-08-2009, 17:02
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#1
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Registered User
Join Date: May 2009
Location: Grenada
Boat: Shorebro,Royal 33 - Aloisius
Posts: 1,059
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Painting a Hull with Sea Hawk 44
I have a hull painting question.
We had the hull cleaned with a high pressure hose and scrapped when our boat was put on the hard. Then I scrapped the entire hull with a small scraper and my wife followed with 80 grit paper. All of the barnacles were removed but there was still residue from where they had been.
I was three quarters down painting my first coat and a marina guy came over and started talking and noticed the residue. He commented that I should have removed all of the barnacles. Was he looking for a job or when you prepare the hull do you remove every barnacle and all of the residue? He also was asking if we needed the inside cleaned or the dinghy.
I don't want to over clean, but also don't want to waste money by not doing it correctly. I was going to use a hand sander but had been advised that that wasn't necessary.
Can anyone give me some advice.
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12-08-2009, 17:05
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#2
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Registered User
Join Date: Aug 2009
Location: Bremerton Washington
Boat: Formosa 41 CT Garden Ketch. Wind Rose Hull #282. i am looking for her!
Posts: 26
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i am wondering the same thing!!
anyone some help on the topic please!!
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12-08-2009, 19:13
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#3
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Registered User
Join Date: May 2004
Location: Cruising on the hook
Boat: 34’ Marine Trader
Posts: 754
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I have been painting over the footprint for years with not adverse effects. I merely scrape the site and paint.
__________________
Jim
We are what we repeatedly do.
Excellence, therefore, is not an act but a habit."
--Aristotle
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12-08-2009, 20:01
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#4
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Registered User
Join Date: Nov 2006
Location: San Francisco Bay
Boat: Fantasia 35
Posts: 1,256
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A yard boss/owner once told me the if I can't get it off with a 2000 psi pressure wash it is good enough to paint over.
Paul
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12-08-2009, 23:22
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#5
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always in motion is the future
Join Date: Feb 2009
Location: in paradise
Boat: Sundeer 64
Posts: 19,671
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You can paint over, sure, why not? The question is if it is desirable to do so. And of course, everyone understands that it isn't. If it would have been good, they would have put them on while building the boat.
I wouldn't worry too much but next paint job, get the power sander out and sand it all away and back smooth again. For the time being, you don't have a skeleton in the closet, but countless barnacle skeletons incorporated in the bottom paint ;-)
cheers,
Nick.
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13-08-2009, 04:16
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#6
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Registered User
Join Date: May 2009
Location: Grenada
Boat: Shorebro,Royal 33 - Aloisius
Posts: 1,059
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I will bring my power sander back on the plane instead of an anchor next year. Thanks for the help.
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13-08-2009, 06:27
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#7
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Eternal Member
Join Date: Feb 2008
Location: Las Brisas Panama AGAIN!
Boat: Simpson, Catamaran, 46ft. IMAGINE
Posts: 4,507
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The smoother the bottom. The easier to move through the water........ i2f
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13-08-2009, 07:31
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#8
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Registered User
Join Date: Apr 2008
Location: On the boat - Carib, Chesapeake
Boat: 58 Taswell AS
Posts: 1,139
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I had a problem with the islander 44 soft ablative - it wore off after 6 months at the bow, waterline and lead edge of keel and rudder despite 3 coats in these area. I swithched to the hard ablative (marketed for power boats) and it has lasted two years in tropical waters.
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13-08-2009, 09:12
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#9
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Registered User
Join Date: May 2009
Location: Grenada
Boat: Shorebro,Royal 33 - Aloisius
Posts: 1,059
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I am using Sea Hawk 44 Plus @ 195 per gal. It is suppose to be harder, time will tell. I hope it will last longer than 6 mths!! We are located in Grenada and sail weekends. Thank you for the heads up, I will continue to watch those areas in particular.
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13-08-2009, 15:20
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#10
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always in motion is the future
Join Date: Feb 2009
Location: in paradise
Boat: Sundeer 64
Posts: 19,671
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Landonshaw,
that stuff lasts 3 years for us in the Caribbean, so you should be fine.
Two important factors:
1. Everyone knows this one but it's too important to skip: mix mix mix and mix and mix more each individual gallon can of paint before applying. Use those stirr thingies with the powerdrill and a flat stick. When you think it's good, empty the can in another container, scrape out the stuff that didn't mix well (even though you thought is was good) and mix mix mix again in the other container. Use one gallon up before starting on the next.
2. A very simple trick: after applying all the bottom paint, wait at least 5 days or preferably 7 days before launching. It will last much longer and work better.
cheers,
Nick.
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13-08-2009, 15:24
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#11
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Moderator Emeritus
Join Date: Aug 2005
Location: Carlsbad, CA
Boat: 1976 Sabre 28-2
Posts: 7,505
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Waiting is okay for ablatives but vinyls want to back in the water ASAP. Read the paint instructions when making a decision how long to wait before launching.
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13-08-2009, 15:50
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#12
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always in motion is the future
Join Date: Feb 2009
Location: in paradise
Boat: Sundeer 64
Posts: 19,671
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Roverhi: absolutely correct.
ciao!
Nick.
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13-08-2009, 17:15
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#13
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Registered User
Join Date: Aug 2006
Location: Skagit City, WA
Posts: 25,736
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Not to worry, the paint is sacrificial as are the barnacles.
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13-08-2009, 19:46
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#14
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Registered User
Join Date: May 2009
Location: Grenada
Boat: Shorebro,Royal 33 - Aloisius
Posts: 1,059
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I mixed until my rechargeable ran out of juice.
The 5 to 7 days will be easy since I now have to replace valves.
Thank you for the advice, I will have a drink before I start the next project so as to take up time.
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13-08-2009, 20:14
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#15
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Registered User
Join Date: Jun 2008
Location: Somewhere in the Caribbean
Boat: Beneteau First 38
Posts: 313
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I'm into my 5th year but due for a new bottom, using Island 44. Honduras beckons!
__________________
As I sit, a swirling sea of passion gives it's poems in waves underneath me.
The whispers of the sun in my eyes, a silence within.
Rhythm of the surf, drums of the sea. Thoughts tumble and toss about the deep blue abyss inside me, where the love of you dwells.
I'm fighting currents to get back to you, listening to the flow of your liquid language as you beckon me, "Come Play"
Mariners Cove, CI. Anonymous.
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