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Old 03-09-2012, 19:41   #61
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Re: Bottom Clean Breathing Device

No one bring up the costs of zincs... Some people get upset
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Old 05-09-2012, 16:12   #62
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Re: Bottom Clean Breathing Device

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Originally Posted by shamrock View Post
I just did mine over the weekend. I tied one of those square thowable PFD cushions to the end of a scrub brush on a broom handle. It worked great everywhere but the keel and the rudder. I put on a life jacket to make it easier to float and also ran a line from bow to stern, along the water line which I leaned my back against to be able to push the brush down the side of the hull. It took about ten minutes for each side. Thanks for the idea of using a fender!
If you couldn't reach that part of the boat, how could you tell it did a good job, or if you missed places?
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Old 05-09-2012, 16:31   #63
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Re: Bottom Clean Breathing Device

If he got 80% of the growth he did great..And saved himself a ton of money on hiring a diver.
Some divers actually earn their money, some say they cleaned the boat and didn't...
I've had boats hauled for the owners for survey within a week of the "diver" doing his job and there's been no sign of cleaning being done.
I've also had boats hauled weeks after a good diver cleaned and the boat was still clean...
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Old 05-09-2012, 17:13   #64
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Originally Posted by kaw0922

If you couldn't reach that part of the boat, how could you tell it did a good job, or if you missed places?
I swam under the boat with a mask on and a hand brush to get any areas I missed.
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Old 09-09-2012, 13:03   #65
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Re: Bottom Clean Breathing Device

The company I own does commercial ship husbandry on tugs up to container ships. occasionally I will perform marina work if im available. People ALWAYS complain about prices of hiring divers. I did a commercial vessel last week that had not been cleaned, hauled or painted in 8 years and was around 120 ft. The owner called me after heating issues. It was a hefty bill but after scraping 10k lbs of mussels and growth from the hull his fuel consumption dropped to 1/4 of what it was and gained 5 knots. He promptly called me for the rest of his fleet. Bottom line is I tell customers if my prices are too high to go have it hauled and see what it costs. There is always a scuba diver that will undercut my services and people that will always go the cheapest route but you get what you pay for, and come winter here in the NE, not too many people are too keen on diving 35 degree water with 25 degree air. Heres a picture of a recent job.Click image for larger version

Name:	<a title=photo.jpg Views: 106 Size: 49.3 KB ID: 46225" style="margin: 2px" />
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Old 09-09-2012, 13:39   #66
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Re: Bottom Clean Breathing Device

Do you not have tides in the US?

The other option in the UK is to dry out against a pile (pole) and give it a good scrub with the yard brush and some bleach.

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Old 09-09-2012, 13:43   #67
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Re: Bottom Clean Breathing Device

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Do you not have tides in the US?

The other option in the UK is to dry out against a pile (pole) and give it a good scrub with the yard brush and some bleach.

Pete
You gonna do that 5-15 times per year? That's how often hull cleaning is typically needed in California.
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Old 09-09-2012, 13:55   #68
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Re: Bottom Clean Breathing Device

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You gonna do that 5-15 times per year? That's how often hull cleaning is typically needed in California.
What have they not heard of antifouling paint?

I scrub a couple of times a year and being 31ft I can reach most of the hull with my feet including the prop without getting my hair wet. However, with a good 5m tide drying out on a scrubbing grid is easier even if it take 12 hours before we float off again.



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Old 09-09-2012, 13:58   #69
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Re: Bottom Clean Breathing Device

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What have they not heard of antifouling paint?
In regions of moderate-to-high fouling (like California), anti fouling paint merely retards growth, it does not eliminate it. Regular in-water hull cleaning is a necessary part of boat maintenance here.
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Old 09-09-2012, 14:23   #70
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Re: Bottom Clean Breathing Device

Is the problem weed or slime? I thought the water in Cal was cold?

What paint are they using, I am using Seajet 33 which is quite effective over here

If things grow that fast, you're in the wrong job, you should be growing

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Old 09-09-2012, 14:33   #71
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Re: Bottom Clean Breathing Device

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Is the problem weed or slime? I thought the water in Cal was cold?
Slime, weed, shelled animals- we get it all. Lots of sunny days and water temps topping 70° even here in the Bay Area during the summer add up to pretty high fouling rates.

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What paint are they using, I am using Seajet 33 which is quite effective over here
That product is not available in California. And if the "33" appelation refers to copper content, it probably wouldn't be suitable anyway. Low-copper anti fouling paints simply do not have the horsepower to get the job done here.
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Old 09-09-2012, 14:41   #72
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Re: Bottom Clean Breathing Device

fstbttms is telling you the truth. In San Francisco, even with fresh, high copper-content bottom paint, I get weed and slime growth after a week. After a month it looks pretty bad, especially on the sunny side near the waterline. If the paint is a year old the growth is even faster. I typically haul and re-paint every two years, and have a diver scrub every month. If I were actively racing the bottom would need cleaning more often than that.
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Old 09-09-2012, 14:56   #73
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Re: Bottom Clean Breathing Device

Oh,I am not doubting him, I have never been to Cal so more curious than anything else.

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Old 10-09-2012, 02:26   #74
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Re: Bottom Clean Breathing Device

I am very curious about his diving. I live in Denmark and here I antifoul paint once a year (I've let it go 2 years once). But the environmental authorities are getting closer and closer to a ban on the paint I use and assuming they do ban it, we (all of Denmark) will have to come up with a different system. I am aware that in the UK they have invented a washing machine similar to a car wash that doe boats, but from what i've seen they are expensive, and not for all types of boats.

Don't you remove the antifoul paint when you brush?
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Old 10-09-2012, 04:48   #75
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Re: Bottom Clean Breathing Device

carstenb ... perhaps you can sail down to Germany or the Netherlands to get your antifouling done ;-)
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