The answer to antifouling?

I simply don't know how effective such systems are and as LJS says they first appeared about 20 years ago and then faded away. One potential drawback is that they require a continuous DEC current of between 0.5A and 2.0A. Not too much of a problem if you are permanently plugged in to shore power I suppose, but out of the question if you aren't.

Cheers
TJ
 
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Don't know anything about it but am inclined to compare it to similar devices you can get from garden centres to scare of cats etc, which have never worked for me.

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You get cats on the bottom of your boat? How do they breathe?
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I havent seen anything here that suggests that it doesnt work.

Our boat spends most of its time "plugged into" shore power and this comapany does, in fact, do a mains powered unit. The power drain for this type of device will be quite minimal on shore power compared to, say, my battery chargers and A/C (dehumidifing).

I think I'll google a bit and see what comes up.

Someone must have some knowledge about such systems.
 
one drawback I can see is if the shore power goes off, the hull will foul, and may discharge your batteries, depending on how its set up. The interesting thing about it for me is not hull anti-fouling (I want to lift the boat once a year anyway so may as well paint it) but attaching it to the sterngear to stop the props, shafts and brackets fouling up. I'm definitely looking into that for next season.
 
Best method i've found so far, is to thruch the boat onto a sand bank, then drag it of. I'm still getting same speeds as Jauary, when it was launched. Recon the sand bank scraped off the bottom and made the props all shiny again.. Mind, I'm going for chilly powder next time.
 
Nop I dont see the electrical as a problem.
Simply run it off the mains - they have that option.
Dont let it have anything to do with your batteries and if the power goes off so does the protection ------- and my dehumidification ----- and my battery charger ---- so I'd be ?ucked anyway.

We didnt manage to get out much from Torquay this summer and when we DID actually manage to get out one morning a few days before our trip, I couldnt get her to do more than 20knots - flat out -- We did get a bit mor on the way back so I got a couple of divers to give her a good scrub and clean all her dangly bits. The difference was dramatic.

If this ultrasonic thinggy works we should be fitting it as a matter of course - does anyone think it will ACTUALLY work?
 
I am very interested in this if it has proved successfull in the past. I am on shore power most of the time anyway. Does it stop the growth on hull and props?
 
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Anyone got any experience?

Are there any scientific papers on the subject?

Does it actually work?

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We are probably going to trial it. Boat comes out of the water beginning of October to have the gearboxes uprated and new props fitted, so we thought we'd give it a go. The boat will still be antifould though.

BTW, if anybody is looking for a good pair of mechanical gearboxes with 1.93:1 ratio, let me know. They will be going onto Boats and Outboards.
 
The boat will still be antifould though
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How will judge the difference then? Maybe antifoul one side of the hull...? !
 
I m not suggesting the yanks know everything, but with the number of boats out there, I'd have expected some experience?
I wonder too,if like different antifouls, it might work better in some locations, or against some types of slime/weed/barnacles, than others?
How long before some one claims its upsetting the fish or some rare sandworm, I wonder?
 
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The boat will still be antifould though
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How will judge the difference then? Maybe antifoul one side of the hull...? !

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Because we know what build up we get. And how often we have to use the Sealift in Cowes. The Hamble is good place to test antifoul products. Also one of the key points is the effect it has on protecting the stern gear.
 
I suspect that you wont see as much difference as most would.

I assume you mean the school boat which I should think gets much more use than the average boat so wouldnt have as much time to collect foul before it gets knocked off again.
 
Well I saw it with you and I thought it looked good too. (If the pics were of a real application)

I'm guessing that the electronics will be a tad different now and the range available in digital frequencies could make a difference as I'm not sure analogue would have coped with this at tah time without manual involvement. /forums/images/graemlins/confused.gif

I'm quite keen to try it but not sure which voltage to go for 12 or 220v. /forums/images/graemlins/blush.gif
 
I would be tempted to go for 12v. While on the pontoon you run your battery charger anyway and it means the system will keep functioning should you be away from your mooring for a prolonged period and not have access to shore power.

You could always run an inline switch so you had the ability to turn it off...
 
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