Reply
 
Thread Tools Search this Thread
 
Old 21 March 2012, 05:56   #21
Member
 
Country: UK - England
Town: Dorset
Length: no boat
Join Date: Mar 2012
Posts: 19
Hi Thomas,

Unfortunately your friend has his wires badly crossed! It is TBT that is banned in anti-fouls, not copper. In fact, virtually every anti-foul coating currently on the market uses copper in one form or another as its main biocide.

The difference with Coppercoat is that the copper is held within an epoxy base, so the leach rate is far lower than is the case with the standard anti-foul paints found on chandlers shelves.

You may be interested to learn that we even won the "Most Eco-Friendly Marine Business" at the 2011 China (Shanghai) Boat Show - which is no mean achievement for a company that manufactures anti-fouling!!!
__________________

__________________
Ewan Clark.

Aquarius Marine Coatings Ltd.
(www.coppercoat.com)
ewan clark is offline   Reply With Quote
Old 21 March 2012, 06:01   #22
Member
 
HUMBER P4VWL's Avatar
 
Country: UK - Wales
Town: N Wales Chester
Boat name: Mr Smith
Make: Humber
Length: 6m +
Join Date: Feb 2009
Posts: 5,013
Quote:
Originally Posted by ewan clark View Post
The technical editor of "Motor Boat and Yachting" magazine (Greg Copp) tested it on his 13m Sunseeker last year, and the early results were published in the Feb '12 issue. His boat gained 2 knots at top speed, and 1 knot at cruising revs.

Similarly we had Sunseeker Middle East test Coppercoat on a brace of 82ft Sunseekers in Dubai, and again recorded a 2 knot increase in top speed. And even though it costs a fair amount to lift and repaint these big boats, it's a lot cheaper to gain speed this way than it is to fit bigger engines!
Granted it may add a knot or 2 on an 82ft boat where there is considerable drag, but scale that down and it makes little or no difference to a 6m rib (IMHO).

Coppercoat is certainly smarter looking (250kts boat looks great) and much lower maintenance than antifoul, certainly worth considering if you intend owning an expensive boat for a long time. However it is costly as opposed to few tins of antifoul which perhaps make more sense on the typical boats owned on here.

In terms of advertising the benefits, claiming top speed improvement is stretching the technical facts a little far in my view.
__________________

__________________
HUMBER P4VWL is offline   Reply With Quote
Old 21 March 2012, 06:34   #23
Member
 
Country: UK - England
Town: Dorset
Length: no boat
Join Date: Mar 2012
Posts: 19
You are quite right Paul - the advantage is indeed far more noticeable on a larger boat with a greater wetted surface area. And although the principle remains sound (a low friction, smooth, non-absorbant epoxy coating provides less drag and allows for more speed than a rough, absorbant paint surface), the difference on small RIB may well be slight.
__________________
Ewan Clark.

Aquarius Marine Coatings Ltd.
(www.coppercoat.com)
ewan clark is offline   Reply With Quote
Old 21 March 2012, 06:34   #24
Member
 
Country: UK - Scotland
Town: Ardfern
Boat name: Moon Raker
Make: Humber Destroyer
Length: 5m +
Engine: Honda BF 90 D
MMSI: 235035994
Join Date: May 2006
Posts: 694
Quote:
Originally Posted by thomas View Post
I can't be an environmentalist, I drive a 4x4 and a RIB when I could be a raggie with a Golf although I do have a heat pump.

Since posting I did some research and found copper antifoul is more friendly, but my mate was told it would kill the fish and copper's not used anymore, something's different these days as it used to be shunned upon so was wondering how it;s different as it clearly has changes.
Yeah! Not easy being a RIBnetter and an environmentalist.

I just wonder if your pal was ill informed. Copper has indeed been used for hundreds of years as antifouling. In the 1960's or 70's a new, more effective antifouling paint was introduced, based on organo tin compunds. TBT (Tri Butyl Tin - I think). This was also far less reactive when applied to steel boats and ships (copper makes them rust) and a great success.

The paint manufacturers had test sites around the coast where samples were tested for effectiveness in differing conditions. AFAIK, one of these sites was a mussel/oyster farming area. The shellfish started to die off (I think because the TBT made one gender change sex.) .

Eventually TBT was banned for use on small boats because they spend much time moored in shallow shellfish areas. It was still allowed on big ships, fishing boats etc. Ironically, salmon farmers were allowed to dip their net cages in highly concentrated TBT until quite recently.

The only alternative was to revert to paints containing copper compounds. I think the idea of the 'ablading' or 'self polishing' paints now is that they don't flake off at the mooring or in the marina, thus creating a high concentration of toxins in a small area, but are worn away gradually (to expose fresh layers and keep the bottom clean) while under way, spreading the copper over a large volume of water where it will be below toxic levels.

Copper and its salts are 'natural'. There will be millions of tons of it dissolved in the worlds oceans. Obviously, fish cope with it.

Of the antifouling methods available, I think Coppercoat, or similar, is probably the best and most environmentally friendly. I suspect very little leaches out into the surrounding water and it only kils things that try to attach themselves to the hull.

I just wish I could afford it.

PS I am not an 'expert', or a chemist or toxicologist, so the above may not be 100% accurate. It's just what I've learned over forty years of professional and semi professional seafaring.

Ah. I see Ewan got there first. Must type more quickly.
__________________
alystra is offline   Reply With Quote
Old 27 March 2012, 06:43   #25
Member
 
Country: Poland
Town: Gdynia
Boat name: Baltic Quest
Make: Parker 900 Baltic
Length: 9m +
Engine: Inboard, diesel
Join Date: Sep 2010
Posts: 27
I've just ordered 7l to my 9m Parer Baltic - we shall see how it will be works.
__________________
Jacek

http:// www.balticquest.pl
http:// www.rib-ride.com
Jacek is offline   Reply With Quote
Old 02 July 2012, 17:29   #26
Member
 
Country: UK - Scotland
Town: Livingston
Boat name: Volante
Make: Osprey Eagle 5.6m
Length: 5m +
Engine: Mariner Optimax 125
Join Date: May 2010
Posts: 94
I'm going to order 3 Litres to do my Osprey Eagle, it's not that expensive at around 270, just need to find someone local to apply it for me
__________________
Shog69 is offline   Reply With Quote
Old 02 July 2012, 18:38   #27
RIBnet supporter
 
Country: UK - England
Town: South Coast
Length: 7m +
Join Date: Apr 2008
Posts: 1,445
Just an update.

As the weather has been so crap (again) today, decided to use the crew to have the boat lifted and power washed/scrubbed down. This is the first time since early March.

For the last 2 years we have had if lifted out every 5/6 weeks and a power washer has not even touched the build up of growth. Therefore it has taken 3 big guys 90 mins to hand scrub it with abrasive pads.

Today they observed nothing more than a slime and the power washer took it all clean off in under 20mins. The boat was out of the water for less than 30mins in total. They have said that next time they would happily "beach it" let the tide go out rub it down lightly by hand (go for a food/drink) and then wait for the tide to refloat.

I would estimate we have already recovered the cost of the Coppercoat in savings made.

Steve
__________________
250kts is offline   Reply With Quote
Old 02 July 2012, 23:11   #28
Member
 
kubcat's Avatar
 
Country: Australia
Town: Sydney
Boat name: Lunasea
Make: Ribtec 890SX
Length: 8m +
Engine: Yamaha ME 421STI x 2
Join Date: Aug 2009
Posts: 470
Quote:
Originally Posted by ewan clark
Hi Thomas,

Unfortunately your friend has his wires badly crossed! It is TBT that is banned in anti-fouls, not copper. In fact, virtually every anti-foul coating currently on the market uses copper in one form or another as its main biocide.

The difference with Coppercoat is that the copper is held within an epoxy base, so the leach rate is far lower than is the case with the standard anti-foul paints found on chandlers shelves.

You may be interested to learn that we even won the "Most Eco-Friendly Marine Business" at the 2011 China (Shanghai) Boat Show - which is no mean achievement for a company that manufactures anti-fouling!!!
Evan, we have a product with a similar name here but I suspect it is a different product. Is yours available in Australia and if so, who is your supplier?
__________________
kubcat is offline   Reply With Quote
Old 03 July 2012, 07:42   #29
Member
 
Paul Cannell's Avatar
 
Country: UK - England
Town: Kings Lynn
Boat name: Blow 'N' Away
Length: 7m +
MMSI: 235085136
Join Date: Jun 2009
Posts: 474
Quote:
Originally Posted by GJ0KYZ View Post
I put Coppercoat on my hull four years ago and it's still working fine.
C'mon Paul, your Rib spends more time on Land than it does in the water It'd be growing Tatties if it wasn't copper coated
Attached Thumbnails
Click image for larger version

Name:	Tide's%2520gone%2520out.jpg
Views:	79
Size:	11.3 KB
ID:	69910  
__________________
This is my 'Dark room'....Please don't turn on the lights...

One day your life will flash in front of your eyes...Make sure it's worth watching!
Paul Cannell is offline   Reply With Quote
Old 05 July 2012, 14:41   #30
Member
 
Razorbill RIBs's Avatar
 
Country: UK - Wales
Town: N. Pembrokeshire
Boat name: Various
Make: RIBs & Hovercraft
Length: 9m +
Engine: Outboards
MMSI: Various
Join Date: May 2009
Posts: 1,357
RIBase
On the back of these positive reports have just orerdered some Coppercoat for the Pac.....
__________________

__________________
Dan Worth
www.razorbillribs.co.uk

Follow us on Facebook http://www.facebook.com/#!/group.php...17306504953480
Razorbill RIBs is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 18:00.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.