Barnaclean System

[lancelots]

This should make for some interesting conversation!

Barnaclean Antifouling System for Your Boat

Thoughts any one?

[SailFastTri]

Even if it works, they recommend it be used in combination with standard anti-fouling, and it probably does not control soft growth. It also can't be used with cored hulls, which rules it out for the majority of modern multihulls.

[lancelots]

Well SailFastTri,

That killed 30 minutes of conversation, way to go Mr life of the party

[Dockhead]

Ultrasonic antifouling systems were tested earlier this year in the UK by Practical Boat Owner. The conclusion was that they really work amazingly well.

This particular system was not tested, however.

[lancelots]

The games back on!

[fishwife]

If anyone fits this system or a similar one, perhaps they would be kind enough to report back after a few months. If it really works I could see lots of applications for civil engineering projects with sea water intakes. I haven't been able to find any reports of it's use in industry so I remain skeptical. Snake oil or cutting edge? It's certainly not going to be my money used to prove it one way or the other.

P.

[FSMike]

There's been a lot of discussion on this subject over the years. Best I can gather from other people's experience is if it works at all it's only in cold water.

[sandy daugherty]

Many, if not most current production cored hulls are solid from the waterline down.

But I have a question: doesn't water transmit sound better than fiberglass? Or does the fact that sound with transmit in three dimensions in water mean that it will be more attenuated by a two-dimensional hull?

[lancelots]

Sandy stop trying to take the anger out of this thread!

[Dockhead]

Originally Posted by sandy daugherty

Many, if not most current production cored hulls are solid from the waterline down.

Following power yacht practice, many larger sailboats have hulls cored below the waterline, including mine (Moody 54), many Swans and other Scandinavian boats, plus J-Boats, X-Yachts, Wallys, and so forth. Don't know if you consider any of these "production" boats or not, but many sailboats have balsa cores under the waterline.

[GordMay]

Originally Posted by Dockhead

Ultrasonic antifouling systems were tested earlier this year in the UK by Practical Boat Owner.
This particular system was not tested, however.

Operating at about 30-50 Hz, this system wouldn't be ultrasonic (+20,000Hz). I think it would be ELF (extra-low frequency).

[Viking Sailor]

I think the telling comment in the FAQ is that this system will extend the life of the bottom paint for up to five years. I interrupt that to mean that if you don't have bottom paint on your hull you have no protection!

[Aussiesuede]

Here is commentary from another forum by two folks who have used similar systems with good results after a couple years of use. When I asked this question back in 2008 about the "Ship Sonic" made by Sonic Marine, nobody seemed to have tried out one of these systems. Nice to finally be receiving actual feedback from users:

Posted 12 September 2009 - 07:03 PM Hi regarding marine sonic
i bought MS-10 and installed it in my steel motor sailer at $ 2130 in 2007
i fitted this very simple ,so far its been a success i only need cleaning with brush around the water line every 3 months
I run it 24 hour with my 40watt solar panel not using much power
So far i made the cost back by saving 2 slip and fouling around $ 2600 (slip/hardstand 1 day and cleaning/painting(and few days)
There are a few available but after investigation of some them i used Marine Sonic
The support and help from them is very good (including the installation guide
the web side http://www.asmaustra...arine_sonic.htm
i recomend this to a all
Regards
Lynger1

Posted 16 July 2010 - 04:38 PM
Have had a 'BoatSure' fitted to Bel Isi for 18 months, installed my self. My only problem with the unit , is maintaining the film between transducer and hull, had to mount on a 45*slope.
Water line growth is still a problem and has to be scraped off every few weeks. Antifoul is in places gone and the epoxy undercoat showing, water line growth seems to be the same on the epoxy which seems to indicate the Boatsure works ?
Diveing under the hull it looks clean of weed or shells. Slimes badly in marina but 2 hrs at 5 Knots it all slides off and hull looks clean.
Here in the Tropics with warm water all year round Anti-fouling will only work for 12 months or less for some types of growth. Bel Isi last done march 08. (international Coppercoat)
Due out of the water in the next few months to replace sea cocks and will be able to give better report on results then.
I have been looking at what others have to say on 'copper shield' had thought that a combination of the two might be the answer. Might just do the water line with copper shield and see what happens. Mike

[peter7heiligers]

I have good experience with Hullguard from Canada.In Europe it is a big problem on a steel boat.

[zopi]

heh..idt'd be net to see it sit at the resonant freq of the hull for awhile...