Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 01-09-2016, 15:01   #1
Registered User

Join Date: Apr 2015
Location: Bundaberg QLD
Boat: Leopard 38' cat
Posts: 13
Antifouling devices

Hi fellow boaties.
My question is .Has any body tried or used these sonar antifouling devices.Is it any good.Does it work and if so what are the best devices.Im gessing you would still have to antifouling paint.But how long before repainting and how much hull cleaning needed.
Cheers Peter
__________________

__________________
Peter Gazzard is offline   Reply With Quote
Old 01-09-2016, 20:43   #2
Registered User
 
haiqu's Avatar

Join Date: Aug 2012
Location: Somewhere on Australia's east coast.
Boat: 'Keppelena' Hartley Queenslander 33'
Posts: 460
Re: Antifouling devices

They can extend your antifoul over several years. The Jaycar kit (Silicon Chip magazine design) is the cheapest option if you know how to build electronic devices.

Since this was posted to the multihull forum I should also mention that you'll need one transducer per hull. They also work best on fibreglass, steel and aluminium hulls; not so great on timber or ferro due to lower density.
__________________

__________________
http://www.cruiserswiki.org - Moderator

"The cure for anything is salt water... sweat, tears, or the sea" -- Isak Dinesen
haiqu is offline   Reply With Quote
Old 02-09-2016, 02:57   #3
Senior Cruiser
 
StuM's Avatar

Cruisers Forum Supporter

Join Date: Nov 2013
Location: Port Moresby,Papua New Guinea
Boat: FP Belize Maestro 43
Posts: 5,487
Re: Antifouling devices

Lots of opposing opinions about them here's a long thread you may like to consider:

Ultrasonic Anti-Fouling
__________________
StuM is offline   Reply With Quote
Old 22-02-2017, 11:07   #4
Registered User

Join Date: Jun 2007
Location: Caribbean Islands
Boat: 48' Alu Cat
Posts: 106
Re: Antifouling devices

I have just installed the JayCar Sonar transducers on my cat, 48' aluminium, 3 sonar transducers in each hull. Will let you know how it goes. Just now the hulls are dirty, ready to paint next month in Trinidad.
__________________
Seman is offline   Reply With Quote
Old 22-02-2017, 11:11   #5
Moderator
 
a64pilot's Avatar

Cruisers Forum Supporter

Join Date: Oct 2013
Location: Albany Ga.
Boat: Island Packet 38
Posts: 14,017
Re: Antifouling devices

The day that an anti-fouling device actually works will be like the day that a pill actually exists that will make you lose weight while you sleep.
There will be so much demand for it you won't be able to buy it and there will be no doubt about whether it actually works or not as every expert will be extolling its virtues and every sailing magazine, internet forum etc. will be covered in stories about it..

I don't think that day has come yet.
__________________
a64pilot is offline   Reply With Quote
Old 07-03-2017, 02:37   #6
Registered User

Join Date: Mar 2017
Location: Qld coast
Boat: Hendy Nicol 35
Posts: 3
Re: Antifouling devices

Hi Peter

I fitted the jaycar unit to a RL28 a few years ago and it made little to no difference. You face 3 problems, the leopards have a thick solid glass underwater profile which may be outside the units specification, the ultrasonic units are not suitable for a foam/balsa cored boats and I don't believe that your sail drives would be protected by the unit.

I will not fit another one until the technology improves.
__________________
Triwander is offline   Reply With Quote
Old 07-03-2017, 03:34   #7
Registered User

Join Date: Jun 2007
Location: Caribbean Islands
Boat: 48' Alu Cat
Posts: 106
Re: Antifouling devices

I hope I have more luck with my sonar, being installed on my aluminium hulls with shaft drives. I have had good reports from friends with alu boats.
__________________
Seman is offline   Reply With Quote
Old 07-03-2017, 03:36   #8
Moderator Emeritus
 
GordMay's Avatar

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 30,329
Images: 240
Re: Antifouling devices

Greetings and welcome aboard the CF, Triwander.
__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"



GordMay is offline   Reply With Quote
Old 07-03-2017, 04:10   #9
Registered User

Join Date: Apr 2012
Location: Winter Germany, Summer Med
Boat: Lagoon 380 S2
Posts: 891
Re: Antifouling devices

Two things come to my mind.
First if these units would work the big ship industry would already know. These folks spend millions on antifouling, and more for the dry dock time required. Even if these units just extend the lifetime of antifouling by a small percentage they would deploy such units on a global scale within a very short time frame.
However they don't. your chances of success are pretty much nil.

Second if I understand correctly these are devices inducing strong ultrasonic vibrations into the hull. What does a strong permanent ultrasonic blast do to fibreglass? Could this weaken the internal structure over time? I don't know.
__________________

__________________
rabbi is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Old Subject, New Devices - A/C, Generator, etc dakno Electrical: Batteries, Generators & Solar 12 05-04-2010 15:31
Fish Aggregation Devices - Are They a Hazard to Navigation? svstrider Navigation 5 23-09-2009 07:54
Charging devices playing together? Extemporaneous Electrical: Batteries, Generators & Solar 7 12-03-2009 08:11
Night vision devices amytom Marine Electronics 29 21-10-2008 15:31
Roll Control Devices Duckonfidelis Product or Service Reviews & Evaluations 12 13-09-2007 14:00


Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 09:31.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.