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Old 04-04-2016, 09:29   #151
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Will Ultrasonic Work on an Epoxy over Wood Boat?

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Originally Posted by Bob1201 View Post
I think you will be pleasantly surprised
The manufacturers say the ultrasonic device is not suitable for "timber" boats, but will it work on epoxy over plywood boats?

Don't quite understand the installation, so I am wondering if the hard, epoxy coating (inside and out)l would make a difference.

Thanks,

G2L
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Old 05-04-2016, 17:16   #152
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Re: Will Ultrasonic Work on an Epoxy over Wood Boat?

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The manufacturers say the ultrasonic device is not suitable for "timber" boats, but will it work on epoxy over plywood boats?

Don't quite understand the installation, so I am wondering if the hard, epoxy coating (inside and out)l would make a difference.

Thanks,

G2L
Think "hull ringing". Metal and solid fiberglass will work, whereas wood would absorb the ultrasonic energy.
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Old 06-04-2016, 04:25   #153
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OK - Re: Will Ultrasonic Work on an Epoxy over Wood Boat?

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Think "hull ringing". Metal and solid fiberglass will work, whereas wood would absorb the ultrasonic energy.
Got it.

Thanks for the clarification.

G2L
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Old 29-06-2016, 20:46   #154
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Re: Barnacle removal without scraping

I dive under my boat and use an ice scraper. Works great for all the soft stuff and I can pry off barnacles if needed..some are more stubborn than others.

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Old 29-06-2016, 21:38   #155
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Re: Barnacle removal without scraping

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I dive under my boat and use an ice scraper. Works great for all the soft stuff and I can pry off barnacles if needed..some are more stubborn than others.

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That should be good for the paint.
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Old 29-06-2016, 21:44   #156
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Re: Barnacle removal without scraping

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That should be good for the paint.
That's how every hull cleaner from South Carolina I've ever talked to does it. I'll never understand it.
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Old 30-06-2016, 04:20   #157
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Re: Barnacle removal without scraping

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Originally Posted by Irwinsailor1973 View Post
I dive under my boat and use an ice scraper. Works great for all the soft stuff and I can pry off barnacles if needed..some are more stubborn than others.

Sent from my ALCATEL A564C using Cruisers Sailing Forum mobile app
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That should be good for the paint.
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That's how every hull cleaner from South Carolina I've ever talked to does it. I'll never understand it.
How is it supposed to be done?
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Old 30-06-2016, 07:53   #158
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Re: Barnacle removal without scraping

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How is it supposed to be done?
It's supposed to be done gently, with a pad or brush. If your anti fouling paint is so foul it requires a scraper to remove the growth, you have waited much too long to clean it.
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Old 30-06-2016, 08:39   #159
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Re: Barnacle removal without scraping

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How is it supposed to be done?


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Old 30-06-2016, 21:01   #160
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Re: Barnacle removal without scraping

This boat is a rescue...it was abandoned...left to slowly die. I saved it and I am currently restoring her. She is 43 years old. She under my watch has not had a bottom job yet, so it is not an issue to pry a few barnacles off from time to time. I would never destroy any paint...but I do regularly dive and keep growth off. When in fact she is hauled out and cleaned and painted, she will not be receiving the ice scraper!

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Old 01-07-2016, 04:43   #161
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Re: Barnacle removal without scraping

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It's supposed to be done gently, with a pad or brush. If your anti fouling paint is so foul it requires a scraper to remove the growth, you have waited much too long to clean it.
Thanks for the tips and the videos that will be very helpful in the near future, maybe this weekend if I get the old girl running.

Judging from the videos I'd say you have done this job a time or two in the past Guess I'll have to get over wanting to put the loose screws in my mouth like when I'm working on the motor...Putting it in the glove is a great tip.
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Old 07-07-2016, 14:21   #162
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Re: Barnacle removal without scraping

Thanks for taking the time to put together the videos. They're great.

Sorry for the thread drift, but I had 2 questions about your shaft zinc install:

1) My zincs always fail at the screw attachments when there's still lots of zinc left in the body. I've been told that painting the screw contact area with nail polish will help this. Do you have experience with this?

2) I didn't see you whack the zincs with a hammer and re-tighten. You're the one who told me that I need to do that to flatten the little copper ball. Do only some shaft zincs require this?

Thanks in advance.
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Old 06-01-2017, 23:38   #163
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Re: Barnacle removal without scraping

Two to seven thousand people on a cruise ship, and this is what happens to their nastiness (and BTW - that ain't an oil slick)
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Old 06-01-2017, 23:49   #164
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Re: Barnacle removal without scraping

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Two to seven thousand people on a cruise ship, and this is what happens to their nastiness (and BTW - that ain't an oil slick)
No, it ain't an oil slick. It's sand being kicked up by the bow and stern thrusters.
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Old 07-01-2017, 00:04   #165
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Re: Barnacle removal without scraping

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No, it ain't an oil slick. It's sand being kicked up by the bow and stern thrusters.
OK, I'll bite - are you suggesting cruise ships don't discharge raw sewage into the oceans - and are you just saying your opinion of the photo is that the ship is just kicking up bottom from its thrusters?
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