Cleaning Hull in the water - Page 2 - SailNet Community
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post #11 of 67 Old 10-28-2012
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Re: Cleaning Hull in the water

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Advice humbly requested.
I went out and bought some of the course green (SOS type) of scrubbies. The type usually found in the sponge/dishwashing section of the grocery store.

Then, on the way home, I started thinking.... What if these are too course/hard.... and they do a great job eliminating the current growth... but then they cause countless tiny scratches that not only compromise the longevity of the hull coat... but also allow countless microscopic crevices for new marine life to get a foothold....thereby increasing my future problems 10 fold.
Rule Number One- Always clean your hull with the softest cleaning media possible.

What that turns out to be is completely dependant on the age and condition of your anti fouling paint and how foul you have allowed it to become. You will not hasten fouling by creating "countless microscopic crevices." Fouling organisms will begin attaching themselves to your hull rgardless of how smooth or not your anti fouling paint is. But what you do not want to do is remove more paint than necessary during in-water hull cleaning. By using cleaning media (be it a scrubber, brush, carpet or whatever) that is overly abrasive, you will not only shorten your paint's lifespan but will introduce more copper into the water column than you otherwise would.

Clean your hull relatively frequently and gently. This is the way to maximize your boat's performance both under power and sail and minimize your fuel consumption and carbon emissions.

Last edited by Fstbttms; 10-28-2012 at 06:46 PM.
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post #12 of 67 Old 10-28-2012
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Re: Cleaning Hull in the water

Several times a summer I get out a little early for a race and offer two scrubbing pads to a couple of my young fit crew members. In about 15 minutes the hull and keel and rudder are spotless. I tie a couple of lines at the forward and aft cleats along each side to give them some thing to hang on to, which makes it easier for them.

I am in fresh water so use VC- 17 which is hard and does not come off easily and every year at haul out I have a nice clean bottom.

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post #13 of 67 Old 11-09-2012
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Re: Cleaning Hull in the water

FYI here in the Pacific Northwest it's against the law to clean ablative bottom paint bottoms in water. Hard bottom paints are OK. A big fine if you get caught. Worth checking in your area.

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post #14 of 67 Old 11-10-2012
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Re: Cleaning Hull in the water

great post, enjoyed the video too

I have this project on my list-
will use the brush trick on dock, then finish amid the waters off Sanibell
will be using snorkel gear...
many years of underwater swims- once beat my Uncle's record, six lengths of his swimming pool without rising for air
alas
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post #15 of 67 Old 11-10-2012
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Re: Cleaning Hull in the water

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FYI here in the Pacific Northwest it's against the law to clean ablative bottom paint bottoms in water. Hard bottom paints are OK. A big fine if you get caught. Worth checking in your area.
I am not aware of any other states with actual honest-to-God laws on the books restricting in-water hull cleaning.

Here is a link to the Washington Dept. of Ecology web page pertaining to the law in question:

Hull Cleaning and Boat Washing | Clean Green Boating | Washington State Department of Ecology
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post #16 of 67 Old 11-10-2012 Thread Starter
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Re: Cleaning Hull in the water

FST BTTMS,
Thank you so much for taking the time to make and post those videos. ven though I have never done this job before, I am now completely confident, thanks to you and other posts, that I will have no problem tackling this little piece of maintenance from here on out.
Thanks again, fair winds,

---tapske...
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post #17 of 67 Old 11-10-2012
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Re: Cleaning Hull in the water

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FST BTTMS,
Thank you so much for taking the time to make and post those videos. ven though I have never done this job before, I am now completely confident, thanks to you and other posts, that I will have no problem tackling this little piece of maintenance from here on
You're very welcome. Thanks for looking at them.
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post #18 of 67 Old 11-11-2012
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Re: Cleaning Hull in the water

If your boat is small enough, or tender enough, you can do a pretty good job with a regular deck brush with a long handle.

Take a halyard to the next finger over from yours, tie a truckers hitch several feet up - this takes some experimentation - loop the free end through the dock cleat - this is the one place those miserable dock rings actually work better - loop back up through the hitch and heave the boat over.

Cleat or tie it off and go and scrub the exposed side of the boat.

Undo the hitch, take the line to a finger on the other side and repeat.

I could get all but the bottom 1/2 of the fin on my 26' quarter tonner using this technique. A longer handle would have fixed even that.
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post #19 of 67 Old 11-11-2012
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Re: Cleaning Hull in the water

I've always wanted to have a hookah onboard for this. Any recommendations? It really only needs to be the most basic, single hose shallow system.


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post #20 of 67 Old 11-11-2012
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Re: Cleaning Hull in the water

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I've always wanted to have a hookah onboard for this. Any recommendations? It really only needs to be the most basic, single hose shallow system.
http://www.airlinebyjsink.com/
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Last edited by Fstbttms; 11-11-2012 at 11:06 AM.
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