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Go Back   SailNet Community > On Board > Gear & Maintenance > What's with the slime??
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Thread: What's with the slime?? Reply to Thread
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Topic Review (Newest First)
08-08-2012 11:44 AM
jppp
Re: What's with the slime??

Wow! Found easiest way to remove slime. Get the boat out of brackish water and into salt. Boat is in Branford CT today. I noticed the white bottom paint is bright. Of course the water is clearer as well.
07-25-2012 07:38 AM
mgb69
What's with the slime??

Just bought some bottom paint and will re-coat my hull this wkend.
For interest sake the salesman noted that the xxx Bottomcoat (cheapest option - copier based) could only sit on land for 5 days before the paint would react with the air and start loosing its effectiveness. After a winter (or 18 mo in the case of my boat) the paint is basically useless.
The 'Fiberglass Bottomcoat' was supposed to be good on land for up to 60 days
He claimed the CSC Micron did not react to air at all and could last thru a few seasons.

Mark
07-23-2012 02:14 PM
MarkSF
Re: What's with the slime??

Quote:
Originally Posted by jppp View Post
No, it is not "news" to me. But now I am rethinking spending the extra 100 bucks to "Control" slime. Next year it will just be the first and only $100 that I spend. I was about to spend $100 a gallon until I saw what the $230 a gallon stuff claimed to do. I'm sure the warm water is a contributing factor to the rapid growth and nothing is going to stop the slime. I must say the hour I spent in the water under the boat scrubbing was a fantastic cardio work out. Hey, maybe I'll smear the stuff they put inside Twinkies on the hull. No way anything could live or grow on that.
Personally, I think $65 to $70 to not have to spend an hour scrubbing the bottom of my boat is money well spent. Consider what else you could be doing with the time.
07-23-2012 07:08 AM
Minnewaska
Re: What's with the slime??

I have the yard apply one top coat of Petit Vivid each year, which costs around $1500. A hull diver charges me $150 to clean her, which I only do once or twice per year. I will bet I would be well ahead of the game by skipping a year and cleaning every 6 weeks. But, I do like that new look of a top coat.

For me, it's a hassle to have her cleaned, as the marina will not allow anyone in the water and I have to use my time aboard to move her for cleaning. I'm not sure if that is for safety reasons or to keep the extra copper from being added to the water from the scrubbing. I think it's the latter.

New England marinas are beginning to be required to install water reclamation systems under boats they power wash upon hauling, but can defer it if they have some mitigating practices. The requirement seems to be fairly subjective, as best i can tell. I will bet that agreeing not to scrub boats in the water is their "settlement", for now. I know of one New England marina that requires all newly painted boats to use environmentally friendly paint. I know of another that will not power wash ashore at all. You must have your hull cleaned in the Bay before hauling.

Once again, it is all environmentalist masterbation. I can move a few hundred yards to a mooring or drop the hook in the Bay and scrub away. Idiots.
07-23-2012 03:49 AM
SchockT
Re: What's with the slime??

Slime has always been a fact of life around here, which is why every racer has a bottom brush. It takes about 15 minutes to give the bottom a quick rub before you leave the dock. Not a big deal really! some guys use a bottom "flosser" which is also very effective.

Besides, slime feels pretty slippery...who is to say it isn't fast?
07-23-2012 02:23 AM
DivingOtter
Re: What's with the slime??

Be careful on charging people. Most marinas will want too see proof of insurance as soon as you set foot under a boat that isnt yours.
07-22-2012 09:08 PM
Fstbttms
Re: What's with the slime??

Quote:
Originally Posted by jppp View Post
What could I charge my dock mates???
Whatever the market will bear. $2-$3/foot is typical. But unless you really need the money, you are only helping the competition, no?
07-22-2012 09:04 PM
Fstbttms
Re: What's with the slime??

Quote:
Originally Posted by paul323 View Post
Some slime is inevitable - but generally bottom paints work really well. I accidentally let my power cord hang in the water while I was away for a month. I swear I got about 1 foot of weed hanging down from it; the hull was bit slimy, that is all. Well, very slimy. But no foot-long weed trailing...however, the prop was invisible behind a soccer-ball sized ball of weed!! In 4 weeks! Sheesh.
It never ceases to amaze me how many customers call me at some point during the spring or summer, claiming that I could not have cleaned their boat two weeks previously (as indicated by the invoice they had received) because the fouling growth they were looking at could not possibly have grown in that time. I understand that part of the hull cleaner's job should be to educate the boat owner about the realities of the fouling progression, but man, sometimes I wonder!
07-22-2012 08:57 PM
Fstbttms
Re: What's with the slime??

Quote:
Originally Posted by mgb69 View Post
Further to that - how long do the bottom paints last?
My boat will have max 5 mo in the water/yr - does that mean the ablative paint will last 2 seasons?
Or is it just dependent on my area?
For boats that live in the water year round, typically you can expect to get 2-3 years out of a quality anti fouling paint, whether it is an abaltive or hard product. There are exceptions but nothing is going to last longer than that. Talking about actual paint products now, not copper-loaded epoxies like Coppercoat etc.

The manufacturers do like to sell "multi-season" ablatives to those of you folks with short sailing seasons. I will not speak to their effectiveness in this regard, having no experience with boats that come out of the water for the winter. But it is true that ablatives can withstand prolonged periods out of the water while hard paints cannot.
07-22-2012 08:51 PM
Fstbttms
Re: What's with the slime??

Quote:
Originally Posted by mgb69 View Post
But what is 'normal'? I had ~200+ little barnacles per sq ft. Does that count as 'retarded growth' or is my bottom paint shot?
Yes, your paint is shot. Most anti fouling paints (when in good condition) will work very well against higher forms of fouling organisms (like barnacles.) They perform less well against lower forms (like algae) which is why the "anti slime" paint formulations came into being and are so popular. But the bottom line is; if you have a serious barnacle infestation on your hull, you need new paint.

Quote:
Originally Posted by mgb69 View Post
Any suggestions on what to do?
Should I pull the boat and power wash them off? Just hire a diver to clean the bottom? Or should I pull it and put on a new layer of bottom coat?
At this point, anything but a new bottom is just a bandaid. But consider giving a local hull cleaner some work before you haul.
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