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Old 12-09-2015, 03:41 PM   #21
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There are bottom paints that behave like Prop Speed.
These are called "foul-release" coatings (the are not paint) and are non-toxic and are designed to create a surface so slick that fouling organisms cannot readily attach. On pleasure boats, they typically require very frequent cleaning.
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Old 12-09-2015, 04:10 PM   #22
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These are called "foul-release" coatings (the are not paint) and are non-toxic and are designed to create a surface so slick that fouling organisms cannot readily attach. On pleasure boats, they typically require very frequent cleaning.
Yes that's correct. Except the boats I've seen with it were pretty much self cleaning as the boat moved.

Have you worked on any boats that were coated with it?
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Old 12-09-2015, 04:28 PM   #23
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I have not had the pleasure. Foul-release coatings are still pretty rare on pleasure boats.
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Old 12-10-2015, 11:27 AM   #24
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....... And here's another tip for you- any high quality copper-based hard anti fouling paint will perform well for 3+ years, properly applied and maintained.
That has been my experience. I do have a diver regularly service my boat.

Someone asked me a question recently and I didn't know the answer so maybe you can answer: What do they do on bigger boats that can't be easily hauled for bottom painting? Or "ships"?
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Old 12-11-2015, 06:54 AM   #25
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Or "ships"?

Ships move far more than pleasure boats , so their anti fouling works with the more rapid water flow.

Time is $$$ so when a ship is painted it is swarmed by workers with 30,000 psi pressure washing gear , and in some yards the task of cleaning , surface prep and painting is done by robots.
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Old 12-11-2015, 10:44 AM   #26
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That has been my experience. I do have a diver regularly service my boat.

Someone asked me a question recently and I didn't know the answer so maybe you can answer: What do they do on bigger boats that can't be easily hauled for bottom painting? Or "ships"?
Commercial shipping and naval vessels are (as mentioned) typically underway much more than most pleasure boats and they tend to stretch their anti fouling's lifespan to around 5 years or so. But they do (just like our boats) require regular in-water hull cleaning and periodic haulouts (or in this case, dry-docking) for new paint.
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