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Old 10-03-2016, 04:39 PM   #21
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I tend to get a little more information from my customers than just a boat name and slip number. If any of them were using an ultrasonic anti fouling system, I'd know about it.
The manufacturer would have us believe that if you install their product you will no longer require the services of a diver.

Personally, I'm not buying it. Time will tell. Maybe it's a good product for boaters in areas where the tree huggers have managed to get laws passed outlawing the cleaning of boat bottoms while they are in the water.
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Old 10-03-2016, 10:38 PM   #22
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Used to be service tech and trainer for old Branson Instruments ultra sonic cleaning and testing. In order effectively clean with cavitation best results in a soapy water or solvent is at relatively high power. Branson's equip line ran from 40 to thousands of watts. IMO to clean a hull you'd need a pretty sizable transducer head running hundreds of watts ... Then what about that diver ... Works best for immersion cleaning from small to very large tanks.
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Old 10-06-2016, 05:26 AM   #23
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i'm not sure it kills the critters.

More likely, it irritates the sh.t out of them so they don't fell welcome....my guess only.
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Old 10-06-2016, 08:36 AM   #24
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i'm not sure it kills the critters.

More likely, it irritates the sh.t out of them so they don't fell welcome....my guess only.
That is basically how they work.

They will not " clean" your hull. Just help keep the barnacles and such from attaching.
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Old 10-06-2016, 10:44 AM   #25
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There is another post running simultaneousely about this
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Old 05-13-2017, 10:35 AM   #26
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Anyone have an update on these products?
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Old 05-13-2017, 12:13 PM   #27
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How about microfiber glued on cloth.
Supposed to repel barnacle larvae from liking the surface.
Simply test it, buy some microfibre cloth, glue to a plank and see what happens.

http://www.trawlerforum.com/forums/s...ets-27665.html
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Old 08-30-2018, 09:49 PM   #28
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This is an old thread but I'll post anyway. I added the 4 transducer set from ultra-sonitrec 20 months ago on my older Nordic Tug 32 and the results have been excellent. My marina has a habit of growing mussels in the thru-hulls and this stopped them completely. My diver could not believe that the hull had not been cleaned in over a year when he changed zincs last spring. I'm very pleased. However, you must leave them on all the time. As someone else said, they do not clean the hull, they keep it clean. If you turn it off, stuff will adhere and start to grow quickly. I've been told to avoid the Chinese versions, but I have no personal experience with them.
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Old 08-31-2018, 10:32 AM   #29
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My diver could not believe that the hull had not been cleaned in over a year when he changed zincs last spring.
Who is your diver? I'd like to talk to him.
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Old 08-31-2018, 12:00 PM   #30
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You have to wonder why ultrasonic systems aren't in widespread use, if they actually perform as advertised. I have been in the hull cleaning biz for 22 years/30,000 service events and have never come across one.

but....if they work, you wouldnt come across one in your business. Your comment seems to confirm that they work?
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Old 08-31-2018, 12:21 PM   #31
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but....if they work, you wouldnt come across one in your business.
You believe that in 24 years and 30,000+ hull cleanings, I would never have occasion to come across an ultrasonic system?


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Your comment seems to confirm that they work?
I don't know how you came to that conclusion. But I will tell you this; I have a client who (besides being a well-known boat broker and sailor), manages several high-end race programs here on San Francisco Bay. A few years ago, two of the J/120s he manages decided to install ultrasonic systems. They took them out before an single race season had elapsed, that's how unimpressed with them the owners were.

Here's the bottom line (again): If they performed as advertised, every chandlery in the country would sell them. If they performed as advertised, the stock of all the major paint manufacturers would plummet. If they performed as advertised, I'd be out of a job. But none of that has happened. I wonder why?
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Old 08-31-2018, 12:35 PM   #32
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You believe that in 24 years and 30,000+ hull cleanings, I would never have occasion to come across an ultrasonic system?




I don't know how you came to that conclusion. But I will tell you this; I have a client who (besides being a well-known boat broker and sailor), manages several high-end race programs here on San Francisco Bay. A few years ago, two of the J/120s he manages decided to install ultrasonic systems. They took them out before an single race season had elapsed, that's how unimpressed with them the owners were.

Here's the bottom line (again): If they performed as advertised, every chandlery in the country would sell them. If they performed as advertised, the stock of all the major paint manufacturers would plummet. If they performed as advertised, I'd be out of a job. But none of that has happened. I wonder why?

If your bussines is cleaning hulls and these things work at their job, I would think it unlikely that you would come across one. Now, f they ddnt work,then maybe you would have them coming to you.
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Old 08-31-2018, 12:51 PM   #33
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If your bussines is cleaning hulls and these things work at their job, I would think it unlikely that you would come across one. Now, f they ddnt work,then maybe you would have them coming to you.
My business is the maintenance of anti fouling paint and has been for decades. In addition, I know most of the 100+ hull cleaners here. I don't do this work in a vacuum. If there were ultrasonic devices in use in the Bay Area, I would know about it. If they worked, I would have lost a client or six hundred to them. They sure as hell wouldn't be a secret.
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Old 08-31-2018, 05:08 PM   #34
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I certainly won't argue with the SF diver's experience, and I have nothing to do with the boating industry, but they have certainly worked on my boat in my waters. Of course, we all are behind a veil of anonymity here and "truth" is to be gleaned from trends, not specific posts. I refer you to Nigel Calder's cautiously optimistic article on the subject: http://www.pyiinc.com/downloads/soni...0Barnacles.pdf
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Old 08-31-2018, 05:37 PM   #35
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I certainly won't argue with the SF diver's experience, and I have nothing to do with the boating industry, but they have certainly worked on my boat in my waters. Of course, we all are behind a veil of anonymity here and "truth" is to be gleaned from trends, not specific posts. I refer you to Nigel Calder's cautiously optimistic article on the subject: http://www.pyiinc.com/downloads/soni...0Barnacles.pdf

when was that article written and when is the one year report due?

As to believing what someone in the business says, I usually dont. They are biased. Not dishonest, just biased.

I have been using the E Paint ZO and while the manufacturers say 3 years, I have been going 5+years in warm southern waters. Several "in the business" people told me that using ZO, a chemical used in dandruff shampoo, would not work. Well, it does.

But "In the business" people are terribly old fashioned and dont change very fast because they are afraid that if they grab a fad and it fails they will loose business. And that is a good business attitude to take, protect the customer. But it does not make for rapid innovation.

Oh, and while I have read several mildly optomistic reports on this I have read NO negative reports by anyone who has actually used one.
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Old 09-01-2018, 11:40 AM   #36
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As to believing what someone in the business says, I usually dont.
Right. Why lsten to the experts?
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Old 09-01-2018, 02:40 PM   #37
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Right. Why lsten to the experts?

Sorry, I didnt know you were an "expert" on the Ultra Sonic prevention systems. I thought you said you had never seen one? Which one are you an "expert" on, the two transducer or the 4 transducer unit?
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Old 09-01-2018, 02:47 PM   #38
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Sorry, I didnt know you were an "expert" on the Ultra Sonic prevention systems.
I never claimed to be an expert on ultrasonic systems. But by your own admission, you don't listen to them on any subject. As evidenced by your 5+ year old anti fouling paint. Customers who have no experience in the subject telling service providers what's what. Yeah, that's what we live for. 🙄
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Old 09-01-2018, 02:56 PM   #39
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While I have heard of systems on large vessels that work...

I have to agree with fstbttms about the rarity of systems in use .....

and even more so the lack of marine professionals, publications, marinas, retail stores, captains, hull cleaners, commercial operators, and other experienced boaters commenting on their effectiveness or even talking about them in general.

Some units or someday they may become widespread...but it sure ain't today.

I don't use one and my bottom stays almost whistle clean for 7 months...then when I stop cruising, it loads up pretty fast. Like bottom paints, the effectiveness of some units may have little to do with their workings and more to do with other factors.
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Old 09-01-2018, 03:13 PM   #40
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I never claimed to be an expert on ultrasonic systems. But by your own admission, you don't listen to them on any subject. As evidenced by your 5+ year old anti fouling paint. Customers who have no experience in the subject telling service providers what's what. Yeah, that's what we live for. ��
I thought it was you that said,

" I have been in the hull cleaning biz for 22 years/30,000 service events and have never come across one."

Sorry if that was someone else using your name, I thought it was you.

My 5+ years on EPaint is factual observation on two different boats, a Gulfstar 36 and a BR 44 over 15 years. Not speculation on something I have "never come across."
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