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Boat Forum / Cruising / July 2006Copper ring report
Last spring I took up a bit too soon on the new through hull nut for my Knotlog sensor and set it a bit below the surface of the hull. Attempting to make lemonade out of lemons and kill another bird with the same stone while excelling at creative writing by avoiding trite sayings, I cut a ring of copper flashing and epoxied it to the through hull surface thus: http://home.maine.rr.com/rlma/Strider0604.htm#Copper I took the sensor out for the first time today to check it and there is not a hint of slime or growth on it. Last year it had small mussels with discernable shells growing on it by August. I think this really works. I wonder if there is some way to copper sheath a fiberglass hull:)? I know taking it out more often and putting it in a fresh water with a bit of bleach is another approach but mine was cleverly installed so that the fastest swap with the blank plug still results in a jet of salt water all over the cabin sole and some drawer hardware. It's enough of a clean up that I'd like to not do it more than a couple times a season.  SignatureRoger Long I remember reading of a company that installed some sort of copper foil to the hull, but that was a few years ago. It wa expensive IIRC, but did last a long time. I have wondered about fitting some sheet copper to the bottom of the keel, because for some strange reason, bottom paint never seems to last as long there. > I think this really works. I wonder if there is some way to copper sheath > a fiberglass hull:)? >I have wondered about fitting some sheet copper to the bottom of the keel, >because for some strange reason, bottom paint never seems to last as long >there. You have to stop using the keel to locate the bottom. :-) Hello Wayne, Do you still have any info on the Islander Bahama 24? > >I have wondered about fitting some sheet copper to the bottom of the keel, > >because for some strange reason, bottom paint never seems to last as long > >there. > > You have to stop using the keel to locate the bottom. :-) >Hello Wayne, Do you still have any info on the Islander Bahama 24? Not really. What kind of information are you looking for? > >Hello Wayne, Do you still have any info on the Islander Bahama 24? > > Not really. > > What kind of information are you looking for? Anything you might have or know about the boat. >> >Hello Wayne, Do you still have any info on the Islander Bahama 24? >> [quoted text clipped - 3 lines] > >Anything you might have or know about the boat. I had one for about 12 years. Good solid boat. We took it all over LI sound, up to the Vineyard and Nantucket, and to BI a few times. Though there's no standing head room, you'll come to appreciate the open feel of the raised deck construction. With the cut away full keel, it's no speedster, but it handles the seas very well for its size. Heaves to beautifully, and will practically steer itself for long periods on a beat or a reach. One small problem is the motor well. Despite a couple of vent cowls, the outboard starts quickly to choke on its own fumes, so the only practical thing to do is have the cover of the well propped slightly open. Either that, or mount the outboard at the stern outside the well. Also, the boat came with roller reefing. You'll probably want to substitute jiffy reefing if that hasn't been done. Check the deck for delamination, particularly if any hardware has been added or changes, such as, for example, adding anchor chocks. Also, check for leaks at the chain plates so you don't get rotting in the area where they bolt to the bulkheads. When I bought mine I also had to re-tab some of the hull to bulkhead joints, so it's worth checking these areas as well. > >> >Hello Wayne, Do you still have any info on the Islander Bahama 24? > >> [quoted text clipped - 24 lines] > When I bought mine I also had to re-tab some of the hull to bulkhead joints, > so it's worth checking these areas as well. Thanks a bunch Wayne, great info. I am trying to track down some original paper work or manuals if possible. >Thanks a bunch Wayne, great info. I am trying to track down some >original paper work or manuals if possible. You want to thank Dave. I agree on the motor well, they must be ventilated in some way with the out board running. > >Thanks a bunch Wayne, great info. I am trying to track down some > >original paper work or manuals if possible. > > You want to thank Dave. I agree on the motor well, they must be > ventilated in some way with the out board running. Thanks Dave, ventilation is not a problem for me, as my motor hangs off the stern of my boat. Thanks again for the info. Mike >Last spring I took up a bit too soon on the new through hull nut for >my Knotlog sensor and set it a bit below the surface of the hull. [quoted text clipped - 18 lines] >enough of a clean up that I'd like to not do it more than a couple >times a season. Copper bottoms were fitted to Royal Navy (wooden) ships. Then a scientist came up with an electrolytic method to stop the copper eroding. The Navy loved it. For a few months. They found that cathodic protection saved the copper, but allowed the marine growth to come back with a bang! Brian Whatcott Altus OK > I wonder if there is some way to copper sheath a fiberglass hull:)? Sure. Bottom paint. >> I wonder if there is some way to copper sheath a fiberglass hull:)? > > Sure. Bottom paint. I think he mean International Hard Racing Copper Antifouling. Are we still allowed to use it? In fact is copper-based antifouling not banned, along with everything else? Over here TBT (TriButylTin) was banned for pleasure craft years ago, and I seem to remember copper-based paint was also banned, but could be mistaken. Dennis. >Are we still allowed to use it? In fact is copper-based antifouling not >banned, along with everything else? Nope. The enviros haven't gotten to that yet. "Roger Long" <rwlong@maine.rr.com> wrote in news:eKCsg.81212$3B.56316 @twister.nyroc.rr.com: > I think this really works. I wonder if there is some way to copper > sheath a fiberglass hull:)? And, if we sheath the whole thing, we'll have enough electrolysis current to charge the batteries!.....(c; > "Roger Long" <rwlong@maine.rr.com> wrote in news:eKCsg.81212$3B.56316 > @twister.nyroc.rr.com: [quoted text clipped - 4 lines] > And, if we sheath the whole thing, we'll have enough electrolysis > current to charge the batteries!.....(c; You might want to look at coppercoat.com or c-guard.co.uk which offer a hard epoxy-based paint with a very high copper content. I am about to apply coppercoat on my boat. It is supposed to be good for ten years or more. > > "Roger Long" <rwlong@maine.rr.com> wrote in news:eKCsg.81212$3B.56316 > > @twister.nyroc.rr.com: [quoted text clipped - 9 lines] > apply coppercoat on my boat. It is supposed to be good for ten years > or more. If anyone is interested I have just run across a Ceramic based paint that does not allow bottom growth. It has been tested in Florida where growth is known to grow fast. After applied growth disappears as soon as the vessel is under way. Please let me know if you are interested. Samples are available. Is coppercoat legal in US waters? I note that they do not have a US distributor. Yes, I'm interested in the Ceramic based paint. Please let us know the details. Mike > > You might want to look at coppercoat.com or c-guard.co.uk which offer a > > hard epoxy-based paint with a very high copper content. I am about to [quoted text clipped - 6 lines] > as the vessel is under way. Please let me know if you are interested. > Samples are available. > Is coppercoat legal in US waters? I note that they do not have a US > distributor. [quoted text clipped - 14 lines] >> as the vessel is under way. Please let me know if you are interested. >> Samples are available. A quick google found these: http://www.ceram-kote.com/products/index.htm http://www.csc.noaa.gov/cz/2005/CZ05_Proceedings_CD/pdf%20files/JohnsonL.pdf Signature"j" ganz @@ www.sailnow.com Good morning (here, anyway...) > A quick google found these: > [quoted text clipped - 5 lines] > "j" ganz @@ > www.sailnow.com Reading the report, I sure wish they'd tested with "ordinary" bottom paints as controls. All I really got out of this report is that the more often you clean your bottom (who dives their boat 2 or more times a month????) the better it keeps stuff off. Duh. L8R Skip PS in a past life I was part of a demonstration project. The government usually has huge controls, great oversight, and enormously tedious reporting. This demonstration project was amazingly small... Yeah, I'd like to see a link to the paint in question... Signature"j" ganz @@ www.sailnow.com > Good morning (here, anyway...) > [quoted text clipped - 24 lines] > government usually has huge controls, great oversight, and enormously > tedious reporting. This demonstration project was amazingly small... AFAIK, CopperCoat is legal in the US. The mfg said that they are in negotiations with a US-based distributor, but currently do not have one. > Is coppercoat legal in US waters? I note that they do not have a US > distributor. > > Yes, I'm interested in the Ceramic based paint. Please let us know the > details. |
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