When Do I Need To Paint The Bottom?

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Joe Mullee

I bought my boat last June and sailed all summer and fall in the Chesapeake Bay. According to the broker the bottom was painted in March 2001. The boat is a 1983 H34 that appears to have several layers of paint on it. To my untrained eye the bottom still looks good. How do I know when it needs to be repainted? Thanks.
 
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Mark

Bottoms Up!

If Atlantic conditions are similar to Pacific conditions, I suggest painting the bottom at no more than three years between haulouts. Even if it looks like there are no signifigant growths near the waterline, the bottom and keel could be coated. Heaven forbid a keel getting dragged, but that scrapes off the anti-foul and presto! A six foot long rope of aqua vines takes hold. Common practice is to stand on the dock and scrub with a long, curved brush - blind to all or most a foot below the surface, and missing the keel and centerline. Besides the need for paint, it is good to check the bottom for blisters, cracks, delaminations, and a host of other possible problems. Inspect the tiller shaft, the rudder, the prop, and prop shaft bearings, and the through hull fittings - both inside and out at the joins and the interior connections. if anything looks crusty, rusty, warped, or cracked, fix it, replace it, or clean it. Through hull fittings often get clogged because they get over looked. Several layers of paint often accumulate on bottoms - as the paint gets fouled, sealing off the anti fouling copper compounds, by pollutants, or just age. Eventualy, a stripping of the old is recommended, but it should be at the owner's discretion - be ye a racer of a pleasure sailer. My location in Humboldt bay, Eureka, Ca. is a bay rich in organic materials. The rate of growth is astounding for 50 degree water tempature. An untreated hull is coated in a month and has 3 - 4 inches of shrubbery in 3 months. Chesapeake, being off the gulf stream, though at a similar lattitude, would have a faster growth rate, though different critters and leafy suckers. Painting is not just and expense in the rear, but it is a good excuse to go over the most vital, but most ignored part of your boat, the hull below the waterline. Congradulations on the boat, Good Sailing! Saildude25@ Aol and Hotmail .com
 
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Bil Thomas Feng Shui

Bay Repaint

We use a modified epoxy on the bay and repaint everyother year. We have lttle problem with growth. Our marina as a lot of others offer a haul and wash. Do this early in the year and be present when it is done. This will allow for a visual inspection of the amount of growth when the boat comes out of the water. We also paint a base coat of blue with 2 red top coats. As the paint wears a blue warning will show as the paint wears off.
 
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Joe Ford

Hire a diver...

...to inspect and clean the bottom on a monthly basis. My guy charges $20 per cleaning. He will keep you informed of its condition and suggest when it's time to haul out. I wouldn't go longer than 2 years between haul outs and repainting if you leave the boat in the water year round. If the growth is coming back within a month, it's time to consider repainting. There is significant difference between a modified epoxys and an ablative (sloughing) paint. Do your research, talk to boatyard pro's and the staff at your local chandlery.
 
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DavidW

Before it looks like ...

<img src=http://www.yachtworld.com/handyboat/images/e251863.jpg>
 
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