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Conference unifix::sailing

Title:SAILING
Notice:Please read Note 2.* before participating in this conference
Moderator:UNIFIX::BERENS
Created:Wed Jul 01 1992
Last Modified:Mon Jun 02 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:2299
Total number of notes:20724

614.0. "Barnacle Removal???" by NRPUR::CHABOT () Tue Aug 04 1987 08:37

    Does anyone have a reccommendation on how to remove barnacles that
    have started growing along the water line? I'd like to keep the
    boat in the water while this is done. 
    
    

T.RTitleUserPersonal
Name
DateLines
614.1Hire a Diver?DSSDEV::RUDYTue Aug 04 1987 09:1912
    	If it is only at the surface just use a brush and start scrubbing.
    You probably also have some growth lower down.  How much performance
    are you losing?  
    
    	If it is enough due to slime or growth you may want to hire
    a diver.  Usually runs about 1.50 a foot of LOA.  Have him check
    your sacraficials while you are at it they often are gone by now.
    Other alternative is to due diving yourself. 
    
    	I just use one of those 3M barbecue scrub brushes.
    

614.2Not Looking Forward to itNRPUR::CHABOTWed Aug 05 1987 10:2510
    
    I'm not sure of the effects on performance. My major concern is
    to not let the barnacle situation get out of control. 
    
    I'll give the brush a try (being extra careful for the fiberglass).
    
    Thanks.
     
    

614.3GRAMPS::WCLARKWalt ClarkWed Aug 05 1987 11:3720
    If the barnacless are attaching to gelcoat, they have already attacked
    the gelcoat.  You will have to eventually sand and paint these areas.
    If it is boottop paint they are attaching to, you will need to repaint
    the boottop since they have attacked and damaged it.
    
    In either case some work once the season has ended will be in order.
    I have found a table knife to be relatively fast and safe for removing
    all but the part of a barnacle which has etched itself into the
    finish. For that, sanding with a hard block backing the paper is
    effective. 
    
    I have never had any luck removing anything stronger than slime
    and plants with a brush.  The most effective solution is to raise
    the bottom paint line and the boottop untill they are a couple inches
    above the waterline. Slime still attaches to bottom paint in warm
    still water but barnacles cant seem to dig in (although I have seen
    some locate small defects in the paint and work under it).
    
    Walt

614.4Winter wonderlandCSSE::COUTUREWed Aug 12 1987 17:2511
    Try an ice scraper.  Not one of those cheapo models you get from
    Avis, but one of the nice plexiglass models with a ground edge.
    Since my electrical system is grounded through the prop and shaft,
    I can't use bottom paint on them.  I make a regular monthly trip
    over the side and the ice scraper works even better than a putty
    knife.
    
    By the by, I don't know about weeds being less prolific this season,
    but the barnacles seem to be thriving . . . especially the big goose
    variety.