Reply
 
Thread Tools Search this Thread
 
Old 18 June 2015, 07:03   #1
Member
 
gtflash's Avatar
 
Country: UK - England
Town: southampton
Boat name: TOP CAT 2
Make: Scorpion 8.1
Length: 8m +
Engine: 250hp HO
Join Date: Aug 2003
Posts: 1,496
antifoul smoothness

My boat will potentially spend some time afloat this season, upto a month at a time. I am thinking hard racing antifoul

Ive always been afraid of antifoul and its impact on speed. What is the smoothest antifoul any of you guys have used, and have you any pictures of the smoothness please, the sample cards tell me nothing.
__________________

__________________
gtflash is offline   Reply With Quote
Old 18 June 2015, 07:18   #2
Member
 
Country: UK - England
Town: New Forest
Boat name: Charlie Brown
Make: Scorpion
Length: 8m +
Engine: 275 Verado
MMSI: 235069179
Join Date: Oct 2004
Posts: 1,082
Send a message via MSN to Zippy
Honestly, unless it has already been antifouled i wouldnt bother.

give it a really good clean / polish before it goes in, then lift scrub and repeat when it comes out.

Use some Y10 to get rid of any staining. the biggest problem we have is fouling around trim tabs.

Ours is antifouled and i reckon it takes around 3 kts. ours stays in year round with lift and scrub every 4 months or so.
__________________

__________________
Zippy is offline   Reply With Quote
Old 18 June 2015, 07:29   #3
RIBnet Supporter
 
willk's Avatar
 
Country: Ireland
Make: Redbay Boats
Length: 9m +
Engine: 370hp
Join Date: Feb 2008
Posts: 13,772
RIBase
Don't do it!!! It makes me wince just to think about it!

A month afloat is generally no big deal. If you are taking regular trips at speed, it will also reduce the fouling rate. A good pressure wash and Y10 if needed will suffice.

I used Hempel's "hard racing" once. It was quite stippled when rollered on cold.

IIRC, the hard antifouls aren't that effective anyway, so you'll have to wash her either way. I still say "don't do it!"
__________________
.
willk is offline   Reply With Quote
Old 18 June 2015, 07:37   #4
Member
 
Country: USA
Town: S. Carolina
Boat name: D560
Make: Avon
Length: 5m +
Engine: 2016 Merc 115hp CT
Join Date: Aug 2013
Posts: 1,251
Quote:
Originally Posted by gtflash View Post
My boat will potentially spend some time afloat this season, upto a month at a time. I am thinking hard racing antifoul

Ive always been afraid of antifoul and its impact on speed. What is the smoothest antifoul any of you guys have used, and have you any pictures of the smoothness please, the sample cards tell me nothing.
https://www.auroramarine.com/store/repelin.html

This stuff works pretty well.
__________________
Richard
Gluing geek since 2007
Opinions and intepretations expressed are solely my own and do not express the views or opinions of my employer
office888 is offline   Reply With Quote
Old 18 June 2015, 08:14   #5
Member
 
Fender's Avatar
 
Country: UK - England
Make: Zodiac
Length: under 3m
Engine: Scull
Join Date: Dec 2014
Posts: 355
Plus it will negatively affect the resale value of the boat,you could always wash the hull after a couple of weeks to keep on top of any growth
__________________
Fender is offline   Reply With Quote
Old 18 June 2015, 09:36   #6
Member
 
jambo's Avatar
 
Country: UK - Scotland
Town: Girvan & Tayvallich
Boat name: Breawatch
Make: Ribcraft
Length: 5m +
Engine: Mercury 150 F/stroke
MMSI: ex directory!!
Join Date: Sep 2008
Posts: 6,107
RIBase
Guys sometimes AF is a necessity. I moor my rib on a swing mooring in a heavy fouling area for six months of the year. I would not have as much time on the water if was not for AF. Therefore AF would not effect the price as far as I'm concerned in fact it would a bonus as I would not have to start the process. Just my situation but I'm sure others on here will recognise the issue


Sent from my iPhone using RIB Net
__________________
jambo
'Carpe Diem'
Member of the ebay Blue RIB cover club
Member of SABS ( Scottish West Division)
jambo is offline   Reply With Quote
Old 18 June 2015, 10:06   #7
Member
 
Country: UK - England
Town: Hamble
Boat name: Warshot
Make: Scorpion
Length: 6m +
Engine: 150 Optimax
Join Date: May 2009
Posts: 44
Our 6.5 has been antifouled with some fairly hard stuff (Iím sure Searider will confirm the exact type). We normally get it re-applied every Easter but not so far this year.

5 weeks growth on the antifoul in May / June was horrendous. There was literally green algae type plants underneath the hull and it was a pain to jetwash off. I never even bothered with a speed run!

Interestingly, we changed moorings (both on the Hamble) last year and the current mooring seems to attract a lot more growth. I guess this is a function of light and current.

The point Iím getting to is that each mooring scenario is different and this will affect how much growth you do or do not get. This will be a factor in deciding if you want to get it antifouled or not.

As an FYI, the rib had some really chalky antifoul on it when we bought it so I canít say what the Ďpolished hullí speed ever was.

As a tactic, why not try Zippys approach of super clean polish hull, lift out after a month and see what you think? I'd rather a bare hull too but the boat is moored all year round.
__________________
Hambleite is offline   Reply With Quote
Old 18 June 2015, 10:07   #8
Member
 
Country: UK - England
Boat name: Son of a Beach
Make: Avon SR4
Length: 4m +
Engine: Mercury 50hp
Join Date: Sep 2012
Posts: 130
You may find a wax polish may assist if only on a mooring for a limited time, with a bit of a scrub down/reapplication in between.
__________________
Tim in Yorkshire is offline   Reply With Quote
Old 18 June 2015, 15:09   #9
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: 5,238
If the anti foul is sprayed on it is better speed wise.
__________________
HUMBER P4VWL is offline   Reply With Quote
Old 20 June 2015, 05:51   #10
Member
 
gtflash's Avatar
 
Country: UK - England
Town: southampton
Boat name: TOP CAT 2
Make: Scorpion 8.1
Length: 8m +
Engine: 250hp HO
Join Date: Aug 2003
Posts: 1,496
Thanks all. Not the answer I wanted but I hear your concerns. Seen someone on here used copper coat and gained speed. Stl can't find any final finish pictures that look glossy so I presume it's also a rough finish.

I bought a boat with antifoul before. Never bothered me, but I wasted a fortune trying to get it all off after and failed
__________________
gtflash is offline   Reply With Quote
Old 20 June 2015, 07:08   #11
Member
 
Country: UK - England
Town: Mighty Penryn
Boat name: Little Joe.
Make: Avon Searider
Length: 4m +
Engine: Honda BF50
Join Date: Aug 2005
Posts: 8,869
For kick off, don't. I kept un-antifouled hardboats in a marina for years, 6 weeks is about the max before the barnacles start to form. In 4/5 weeks you'll only get the soft slimey light green weed. You can either trailer it, or get a mask on in shallow water and rub it off, you'll hardly need a brush. Obviously, periods will alter port to port due to natural variations.
__________________
Mollers is offline   Reply With Quote
Old 20 June 2015, 07:11   #12
Member
 
Country: UK - England
Town: Mighty Penryn
Boat name: Little Joe.
Make: Avon Searider
Length: 4m +
Engine: Honda BF50
Join Date: Aug 2005
Posts: 8,869
Quote:
Originally Posted by gtflash View Post
Thanks all. Not the answer I wanted
Is it more speed via antifouling that you're looking for?
__________________
Mollers is offline   Reply With Quote
Old 20 June 2015, 11:42   #13
Member
 
Country: UK - England
Town: Southampton
Boat name: SMH Rib / War Shot
Make: Ribtec / Scorpion
Length: 4m +
Engine: 10hp Yam / 150hp opt
Join Date: Sep 2003
Posts: 1,944
RIBase
Quote:
Originally Posted by Mollers View Post
You can either trailer it, or get a mask on in shallow water and rub it off, you'll hardly need a brush. Obviously, periods will alter port to port due to natural variations.
Depends how much time you have to dick about doing this stuff.

We wasted most of last Saturday putting the boat on its trailer and pressure washing the bottom. We should have been out playing, not cleaning.
__________________
Searider is offline   Reply With Quote
Old 20 June 2015, 11:45   #14
Member
 
Country: UK - England
Town: Southampton
Boat name: SMH Rib / War Shot
Make: Ribtec / Scorpion
Length: 4m +
Engine: 10hp Yam / 150hp opt
Join Date: Sep 2003
Posts: 1,944
RIBase
Quote:
Originally Posted by gtflash View Post
My boat will potentially spend some time afloat this season, upto a month at a time. I am thinking hard racing antifoul

Ive always been afraid of antifoul and its impact on speed. What is the smoothest antifoul any of you guys have used, and have you any pictures of the smoothness please, the sample cards tell me nothing.
We used Trilux 33 and it went on quite smooth. Looks like the moon now that a lot of it has flaked off though!

The advantage with Trilux (in white at least) is that it is very white and stays white above and below the waterline. It's not unsightly.

I'd prefer not to have an antifouled hull but can't quite stomach the cost of putting the boat on a drystack berth.
__________________
Searider is offline   Reply With Quote
Old 20 June 2015, 11:45   #15
Member
 
jambo's Avatar
 
Country: UK - Scotland
Town: Girvan & Tayvallich
Boat name: Breawatch
Make: Ribcraft
Length: 5m +
Engine: Mercury 150 F/stroke
MMSI: ex directory!!
Join Date: Sep 2008
Posts: 6,107
RIBase
Exactly the point I made earlier. It's your choice


Sent from my iPhone using RIB Net
__________________
jambo
'Carpe Diem'
Member of the ebay Blue RIB cover club
Member of SABS ( Scottish West Division)
jambo is offline   Reply With Quote
Old 20 June 2015, 11:46   #16
Member
 
Country: UK - England
Town: New Forest
Boat name: Charlie Brown
Make: Scorpion
Length: 8m +
Engine: 275 Verado
MMSI: 235069179
Join Date: Oct 2004
Posts: 1,082
Send a message via MSN to Zippy
Quote:
Originally Posted by Searider View Post
Depends how much time you have to dick about doing this stuff.

We wasted most of last Saturday putting the boat on its trailer and pressure washing the bottom. We should have been out playing, not cleaning.
yup, took ours out a few weeks back to clean and antifoul, was a beautiful weekend lost to boring work!

Will lift ours and pressure wash in the slings in the next few months or so and be done with it.

dry stack is the answer!!!
__________________
Zippy is offline   Reply With Quote
Old 20 June 2015, 11:48   #17
Member
 
Country: UK - England
Town: Southampton
Boat name: SMH Rib / War Shot
Make: Ribtec / Scorpion
Length: 4m +
Engine: 10hp Yam / 150hp opt
Join Date: Sep 2003
Posts: 1,944
RIBase
Quote:
Originally Posted by gtflash View Post
Seen someone on here used copper coat and gained speed.
I remember reading that thread too and thinking "but was the hull pressure washed off when the "before" slower speeds were recorded.

I think the situation was that a dirty antifouled hull was slower than a clean copper coated hull!

If it was faster than an antifoul finish all the manufacturers of power boats / cruisers would be offering it as an add on at build.

Or am I getting cynical in my old age?
__________________
Searider is offline   Reply With Quote
Old 20 June 2015, 13:34   #18
Member
 
Country: UK - England
Town: Mighty Penryn
Boat name: Little Joe.
Make: Avon Searider
Length: 4m +
Engine: Honda BF50
Join Date: Aug 2005
Posts: 8,869
Quote:
Originally Posted by Searider View Post
Depends how much time you have to dick about doing this stuff.

We wasted most of last Saturday putting the boat on its trailer and pressure washing the bottom. .
Really, I'd call it a 20min job excluding driving to and fro the slip. You need a better pressure washer.
__________________

__________________
Mollers 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 15:07.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
×