minimum immersion time for antifoul?

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My boat was launched today in error. She was scheduled to be launched on April 8th but the boatyard took it in to their heads to do it today. Problem is that I only put the last coat of antifoul on at 1400hrs yesterday and she was launched at 0900 today. My question - is the antifouling ruined and does she have to be lifted, the antifoul removed and then re-antifouled.

Antifoul was International Trilux.

Thanks in advance.

Rob

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Most A/F have a MAXIMUM time before immersion, none that I have heard of have a minimum time. Certainly when I was at sea professionally, the shipyard used to do all the a/f, do a bottom inspection & flood the dock ASAP, to stop the paint actually drying to a hard impervious coat, which would not leach the active component out, & thus prevent the a/f from doing it's job. I did mine on 22 Dec 2002 (finishing about 1600), & it was launched at 0900 on 23 Dec 2002. It has lasted all last year with very little fouling in Brighton Marina, & it was a fairly cheap brand at that.
Do not believe you will have any problems.
Brgds
Mike

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What was the cheap brand that you used? I have used XM2000 the last 3 years and it has worked very well for me on the East Coast. Paul

<hr width=100% size=1>" there is nothing-absolutely nothing-half so much worth doing as simply messing about in boats".
 
Some people dry out and antifoul betwen tides.

I used Cruiser Uno - it specifies a minimum time of 6 hours, but it was dry in two because it was warm and windy, so would probably have been OK to go in later the same day.

There is a maximum time befor you should put the boat in the water - in some cases as little as a month.

- Nick

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No problems. Many people antifoul within a tide. We've often put antifoul on 10 min s before being launched (although I wouldn't recommend it)

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In the days of TBT antifouling (them were the good ole days when anti - foul could kill shellfish at 20 m and make yer hair curl fer a decade) most cans stated maximum and minimum immersion times after application for a range of ambient temperatures. Current instructions are much simpler and do not state minimum times. _ A long-hand way to say - no problem IMHO.
Martin

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wouldnt worry as i oftern touch up the cradle areas when shes in the crane's strops ,within mins of going in. Its always there when she comes out again at the end of the season.

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If you go to International's website at yachtpaint.com and go to the data sheet for Trilux you will find the minimum (and maximum) times beore immersion at different temperatures. Actually 24hr min @ 5C and 12hr min @ 15C.

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Many bilge keelers do it between a tide, but most manufacturers specify on the time a minim um time. I have often been caught out by the tide returning while still applying the second coat, and it never seems to matter!

I wouldnt worry about it.

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Agree with Oldharry. Have been doing mine between tides for 20yrs with no problem. Far more performance variation due to different brands/formulations. Have scraped 2 years on several occaisons even with one coat and all-year afloat.

Vic

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