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Old 23-01-2010, 08:58   #16
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Yes to all for sure. It would be good to get some data on that. I have never hesitated to throw a line over board and then jump in and drag through the water.....but always incurring the admonition..."you are simply sharkbait, doing that" and of course never thousands of miles off shore.

thanks for the reply.
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Old 23-01-2010, 10:02   #17
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When I get to Australia Im going to have to paint it anyway and to doing it twice, once here and once there, is difficult to bear.
Why, if you painted the boat before you left, would you have to paint again once reaching Australia?
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Old 24-01-2010, 07:29   #18
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Old 24-01-2010, 08:24   #19
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I've painted magic several times standing on her keel on a sandbar at low tide. I have blue ablative(jotun) over red trinidad hard paint. When I've got substantial red showing, I brush her good then slap on another coat of ablative. Cuts haulouts down to shaft service and similiar and saves quite a bit of money, usually only costs 200 or so to recoat
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Old 24-01-2010, 10:51   #20
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...

I remember reading Thor Heyerdahl in Kon Tiki where they had to periodically deal with the sharks swimming around their raft out in the Pacific.

...
Well, that was many years ago that he crossed the oceans. Now you will meet a lot of mammals but very few sharks in the open waters. And only few species are known to be potentially dangerous, and these few only in specific situations.

I am, too, scared of swimming mid-ocean. But have never ever heard of any case of a shark going for a cruiser swimming mid-ocean. The only time when I heard of a shark attack was when a girl went swimming in Vanuatu (?) in a place clearly designated 'beware of sharks' - that was apparently where the local fishers would clean their catch. (I cannot recall the story very well, but sure other members may have more and more accurate data).

I have also swum with sharks - blacktips, whitetips and hammers, and did not get attacked.

So, I would guess, it is OK to swim mid-ocean.

b.
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Old 30-01-2010, 22:24   #21
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The original question...to paint or not ot paint. I clean hulls for a living in the PNW and see interesting growth. My sailboat is 37' and resides on a mooring buoy with good currents and water flush. I put the cheapest West marine antifouling on and it was a mistake. thought as a diver I could easily keep my boat clean for a couple years with the cheap stuff. Oops! The painted last only one year before I started growing barnicle buds on the paint After 1.5 years I was scraping the barnicles off in clusters and I had to clean the boat everytime I wanted a good sail. I dont know how much will grow while cruising but I do know that unprotected hulls will start growing stuff in one day, you just cant see it yet. Once the spore has taken root on your hull it WILL grow. If you stop for 1 week at an island then you will have a visible slime over the entire hull. In my humble opinion, from experience, the cheapest, quickest, ugliest, single coat antifouling job will be much appreciated later unless your curent pain is not that bad.
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Old 30-01-2010, 23:13   #22
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This stuff about antifouling regulations and cleaning requirements for OS boats in Australia is new to me. But it doesn't surprise me.
I think if you don't mind a cool swim you can almost keep on top of things in colder climates by scrubbing the bottom. But once you get into the tropics those barnacles grow in front of your eyes. Where my boat is moored I'd have to get over the side every week and scrape the prop, if I want to get any traction motoring out of the harbour.
I want someone to invent a little pre programmed robot vacuum cleaner that attaches itself to the hull and continuously cleans it.

Jim
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Old 03-02-2010, 13:55   #23
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Marine growth starts on the film/slime (algae) that adheres to a hull and forms a barrier between the toxic anti fouling paint. No slime - No growth, unless the paint has aged to a point where there is no toxicity left.
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