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post #1 of 11 Old 09-22-2010 Thread Starter
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Leave sailboat in water?

Looking for some advice:
I have a sailboat with ablative paint applied and 2 zincs installed in June 2008. I usually haul the boat every 2 yr. I am thinking of leaving the boat in the water until next summer and then haul for painting. (My marina has a bubbler system and I can then get to the boat easily over the winter, save the cost of on land storage, and sail the boat in the spring.)

Should I have a diver clean off the bottom and check the zincs before the winter?

The boat is in the Chesapeake near Annapolis- any others out there leave the boat in for 2 seasons or more?

Thanks, Saltypat
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post #2 of 11 Old 09-22-2010
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Pat,

Go down yourself and check out the bottom and zincs if you would rather save the money. It's a crappy job, but it will also let you know what is going on with your boat.

I leave mine in the water for multiple seasons with ablative paint. I scrub mine once in October before the winter, once right before the spring bloom of growth, and as needed throughout the summer.
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post #3 of 11 Old 09-22-2010
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2 zincs installed in 2008 would likely be a distant memory by now anywhere on Chesapeake. At least I could never make a zinc last that long, in fact most didn't last even through one season.

Paint may be ok, I suppose.
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post #4 of 11 Old 09-22-2010
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Here's my hual out after four years in the water with occasional cleaning in the water. Zincs will vary in their lifespan, but they may easily last for a couple years.



I added a new shaft zinc in the water. There is no harm in taking advantage of your fiberglass hull,- no Toredo worm fears! Clean it in the water and paint as needed!
Take care and joy, Aythya crew
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post #5 of 11 Old 09-22-2010
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Quote:
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Should I have a diver clean off the bottom and check the zincs before the winter?
Yes. You will never find cheaper insurance.
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post #6 of 11 Old 09-23-2010
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The zinc killer on the Chesapeake are all the "hot" marinas. Once I installed the galvanic isolator my zincs barely erode.
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Last edited by nickmerc; 08-18-2011 at 06:34 AM.
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post #7 of 11 Old 09-23-2010
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Why do your zinc anodes corrode so fast?and what do you mean
by "hot" marinas?
My boat spent three years on a mooring close to outfall of a mountain river-because of the large amount of fresh water marine growth was very slow-the anode I think lasted about 7 yrs-still probably had a years life left when I took it off this year.
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post #8 of 11 Old 09-23-2010
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"Hot marinas" are largely a wives-tale. What is likely the cause of rapid zinc depletion is an electrical problem aboard your own boat or somebody's with whom you share a shorepower circuit. To characterize an entire marina (or worse, a whe group of marinas) as having a problem is a pretty broad generalization and in all probability, inaccurate.
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post #9 of 11 Old 09-24-2010
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I think lasted about 7 yrs-still probably had a years life left when I took it off this year.
Any anode that lasts 7 years is an anode that is not working. Possibly because zinc anodes are not meant for use in fresh or brackish water.
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post #10 of 11 Old 09-24-2010
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Hot marina's are officially marinas with massive amounts of stray electrical currents running through them. As faster said the more likely problem is AC grounding issues with a boat near you. This is the problem in my marina and I cannot figure out which boat it is since 75% of the boats on my dock never leave and all of them are connected to shore power.

I am not sure about zincs not being meant for use in brackish water. I am in brackish water and everyone I know of on the Chesapeake uses zincs. Galvanic reactions take place between two dissimilar metals in the presence of an electrolyte. Pure water will not conduct electricity, however, water with ions does. So, if the water is not conductive you don't need zincs. If the water is conductive, you should have them. Even if all of us are wrong $10 is cheap insurance.
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Last edited by nickmerc; 08-18-2011 at 06:35 AM.
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